Updated on 2026/09/12

写真a

 
nagasawa tsuyoshi
 
Organization
School of Engineering Associate Professor
Title
Associate Professor
Homepage
https://www.nagasawalab-te.com/
External link

News & Topics

Research Interests

  • After-Treatment System for Automotive Emission

  • Internal Combustion Engine

  • Solid Oxide Fuel Cell

  • Energy Conversion

  • Combustion Synthesis

Research Areas

  • Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Catalyst and resource chemical process

  • Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Chemical reaction and process system engineering

  • Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Fluid engineering

  • Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Thermal engineering

Education

  • Tokyo Institute of Technology

    2013.4 - 2018.3

    　 More details

    Country： Japan

    researchmap

  • Georgia Institute of Technology

    2015.9 - 2015.11

    　 More details

    Country： United States

    researchmap

  • Tokyo Institute of Technology

    2009.4 - 2013.3

    　 More details

    Country： Japan

    researchmap

Research History

  • Institute of Science Tokyo   School of Engineering, Department of Mechanical Engineering   Associate Professor

    2024.10

    　 More details

    Country：Japan

    researchmap

  • Tokyo Institute of Technology   School of Engineering, Department of Mechanical Engineering   Associate Professor

    2024.4 - 2024.9

    　 More details

    Country：Japan

    researchmap

  • Tokyo Institute of Technology   Assistant Professor

    2018.4 - 2024.3

    　 More details

  • 日本学術振興会特別研究員DC2

    2016.4 - 2018.3

    　 More details

Papers

  • Assessment of chemical looping technologies for ammonia synthesis integrated with biomass pyrolysis and char valorization Reviewed

    Pichayapan Kongpanna, Suttichai Assabumrungrat, Pongtorn Charoensuppanimit, Tsuyoshi Nagasawa, Merika Chanthanumataporn

    Bioresource Technology   463   135668 - 135668   2026.8

    　More details

    Language：English   Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

    DOI： 10.1016/j.biortech.2026.135668

    researchmap

  • Effect of Cycle-to-cycle Combustion Fluctuation on In-Cylinder and Exhaust THC Measured by Fast-FID in Super-Lean Burn Spark Ignition Engine Reviewed

    Yuji Tagaya, Tsuyoshi Nagasawa, Hidenori Kosaka

    International Journal of Automotive Engineering   17 ( 3 )   96 - 105   2026.7

    　More details

    Language：English   Publishing type：Research paper (scientific journal)   Publisher：Society of Automotive Engineers of Japan, Inc.  

    DOI： 10.20485/jsaeijae.17.3_96

    researchmap

  • Highly-dispersed Pt/CeO2 catalyst for low-temperature CO oxidation prepared by flame spray pyrolysis Reviewed International journal

    Tsuyoshi Nagasawa, Peizhou Li, Natsume Toma, Hidenori Kosaka

    Proceedings of the Combustion Institute   Vol. 42   106278   2026.7

    　More details

    Authorship：Lead author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

    DOI： 10.1016/j.proci.2026.106278

    researchmap

  • One-step synthesis of Ni/CeO2 catalyst with fine structure for CO2 methanation by flame-assisted spray pyrolysis Reviewed International journal

    Kosei Okada, Tsuyoshi Nagasawa, Hiroki Yamada, Toshiaki Ina, Maki Nakamura

    Fuel   Vol. 428   140563   2026.7

    　More details

    Authorship：Corresponding author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

    DOI： 10.1016/j.fuel.2026.140563

    researchmap

  • Dynamic process of evaporation of Ni–Ce nitrate precursor droplet in flame-assisted spray pyrolysis by molecular dynamics simulation Reviewed

    Naoya Minegishi, Tsuyoshi Nagasawa, Kosei Okada, Hidenori Kosaka, Takuya Mabuchi

    Nanoscale   18 ( 29 )   15410 - 15424   2026.6

    　More details

    Authorship：Corresponding author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：Royal Society of Chemistry (RSC)  

    Molecular dynamics simulations clarify solute-aggregation processes and resulting inhomogeneous metal-ions distributions during evaporation of Ni–Ce nitrate aqueous nanodroplets in flame-assisted spray pyrolysis (FASP).

    DOI： 10.1039/d6nr00653a

    researchmap

  • Combined effects of fuel and water injection on performance and knocking characteristics of lean burn spark ignition engine Reviewed International journal

    Tsuyoshi Nagasawa, Hidenori Kosaka

    International Journal of Engine Research   2026.5

    　More details

    Authorship：Lead author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：SAGE Publications  

    The combination of super-lean burn spark ignition (SI) engine with high compression ratio (CR) and in-cylinder water injection has a thermal efficiency potential exceeding 50%. The objective of this study is to obtain guidelines for optimizing the combination between fuel, water injection, and operating conditions in lean burn SI engine. For that, the effect of in-cylinder water injection on SI engine performance is comprehensively investigated at excess air ratio of 1.85 and CR of 17 and 19 using premium gasoline (PG), 5-components surrogate fuels for premium gasoline (S5H), and for regular gasoline (S5R). At CR of 17 and IMEP of 1.0 MPa using PG and S5H, water injection with water/fuel weight ratio (W/F) of 57.7%–62.9% enables minimum spark advance for best torque (MBT) operation, and gross indicated thermal efficiency (gITE) improves by 2.7–3.2 pt compared to no-water injection. In S5R, a strong knock forces a large spark retard, and the spark timing cannot be advanced to the region where stable lean combustion can be achieved even with water injection up to W/F = 75.4%. Furthermore, increasing CR from 17 to 19 in PG results in a 42.5% increase in the required water injection amount, limiting the improvement in gITE to 0.33 pt. Zero-dimensional chemical kinetic simulations using detailed reaction mechanisms for S5H and S5R well reproduce the experimental trends of water injection with respect to fuel and CR, and thermodynamic and chemical effects of water addition on auto-ignition is clarified. Finally, at CR = 19 in PG, reducing the IMEP to 0.85 MPa decreases W/F and gITE reaches its maximum. This study demonstrates that water injection can improve the thermal efficiency of lean-burn SI engines by using fuel with high knock resistance and increasing CR and load within a range that avoids excessive W/F increase.

    DOI： 10.1177/14680874261452093

    researchmap

    Other Link： https://journals.sagepub.com/doi/full-xml/10.1177/14680874261452093

  • Simple Electronic Descriptor for Predicting the Catalytic Activity of Ammonia Synthesis and Decomposition Reviewed International journal

    Yeongjun Yoon, Tsuyoshi Nagasawa, Kyeounghak Kim

    Korean Journal of Chemical Engineering   2025.2

    　More details

    Language：English   Publishing type：Research paper (scientific journal)   Publisher：Springer Science and Business Media LLC  

    DOI： 10.1007/s11814-025-00397-1

    researchmap

    Other Link： https://link.springer.com/article/10.1007/s11814-025-00397-1/fulltext.html

  • Effect of flame temperature on structure and CO oxidation properties of Pt/CeO2 catalyst by flame-assisted spray pyrolysis Reviewed International journal

    Naoya Minegishi, Peizhou Li, Tsuyoshi Nagasawa, Hidenori Kosaka

    Applications in Energy and Combustion Science   Vol. 20   100303   2024.11

    　More details

    Authorship：Corresponding author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

    DOI： 10.1016/j.jaecs.2024.100303

    researchmap

  • Visualization of oxide ion incorporation in CO2 electrolysis on LSCM-based cathodes of solid oxide electrolysis cell Reviewed International journal

    Koudai Takahashi, Tsuyoshi Nagasawa, Merika Chanthanumataporn, Katsunori Hanamura

    Journal of Power Sources   Vol. 595 ( 234073 )   234073   2024.1

    　More details

    Authorship：Corresponding author   Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1016/j.jpowsour.2024.234073

    researchmap

  • Mechanistic Study of Oxygen Reduction Reaction on a Pd/CeO2-ZrO2 Catalyst Reviewed International journal

    Hyo Min You, Tsuyoshi Nagasawa, Jae Woo Lee, Hyunguk Kwon, Kyeounghak Kim

    Applied Surface Science   Vol. 648 ( 159045 )   159045   2023.11

    　More details

    Language：English   Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

    DOI： 10.1016/j.apsusc.2023.159045

    researchmap

  • Three-dimensional numerical simulation of oxygen isotope transport in lanthanum strontium manganese - Yttria-stabilized zirconia cathode of solid oxide fuel cell Reviewed International journal

    Takaaki Shimura, Tsuyoshi Nagasawa, Naoki Shikazono, Katsunori Hanamura

    International Journal of Hydrogen Energy   Vol. 48 ( No. 50 )   19233 - 19247   2023.2

    　More details

    Language：English   Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

    DOI： 10.1016/j.ijhydene.2023.01.349

    researchmap

  • Effects of Diesel Injector Nozzle Hole Deposit on Fuel Injection and Spray Characteristics Reviewed

    Athiwat Butmarasri, Tsuyoshi Nagasawa, Hidenori Kosaka

    International Journal of Automotive Engineering   Vol. 13 ( No. 4 )   177 - 187   2022.11

    　More details

    Language：English   Publishing type：Research paper (scientific journal)   Publisher：Society of Automotive Engineers of Japan, Inc.  

    DOI： 10.20485/jsaeijae.13.4_177

    researchmap

  • Visualization of oxygen storage process in Pd/CeO2-ZrO2 three-way catalyst based on isotope quenching technique Reviewed International journal

    Tsuyoshi Nagasawa, Atsushi Kobayashi, Susumu Sato, Hidenori Kosaka, Kyeounghak Kim, Hyo Min You, Katsunori Hanamura, Ami Terada, Takao Mishima

    Chemical Engineering Journal   Vol. 453 ( No. 2 )   139937   2022.10

    　More details

    Authorship：Lead author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1016/j.cej.2022.139937

    researchmap

  • Structural Characterization of Ceria-Supported Pt Nanoparticles by Flame-Assisted Spray Pyrolysis Using a Burner Diffusion Flame Reviewed

    Tsuyoshi Nagasawa, Kai Matsumoto, Naoya Minegishi, Hidenori Kosaka

    Energy & Fuels   35 ( 15 )   12380 - 12391   2021.7

    　More details

    Authorship：Lead author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：American Chemical Society (ACS)  

    DOI： 10.1021/acs.energyfuels.1c01296

    researchmap

  • Distribution of Reaction Sites in SOFC Cathode through Oxygen Isotope Labeling with Three-Dimensional Microstructural Analysis Reviewed

    Tsuyoshi Nagasawa, Takaaki Shimura, Naoki Shikazono, Katsunori Hanamura

    Journal of The Electrochemical Society   168 ( 6 )   064506   2021.6

    　More details

    Authorship：Lead author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：The Electrochemical Society  

    Distribution of electrochemical reaction sites in a composite cathode of solid oxide fuel cell is investigated through active sites imaging by oxygen isotope labeling combined with three-dimensional microstructure observation by focused ion beam–scanning electron microscopy (FIB-SEM). Power generation with oxygen isotope and subsequent cell quenching is conducted at 973 K for LSM/YSZ cathode using a button cell. Through FIB-SEM observation and secondary ion mass spectroscopy (SIMS) analysis, the 3D microstructure of the quenched cathode with 2D 18 O concentration mapping in the middle plane of the characterized volume is obtained. Some LSM particles which show quite weak 18 O concentration are identified as the isolated phase, while several percolated LSMs near the electrolyte also show quite weak 18 O concentration, which indicates the existence of inactive reaction sites or ion/electron paths even inside the percolated phases. In addition, the oxide ion flux incorporated from the cathode/electrolyte interface is estimated from the 18 O concentration profiles at two locations in the observed area. A clear difference between the calculated oxide ion fluxes at the two locations is observed, which is discussed with the distributions of percolated TPB density and YSZ volume fraction in terms of the effective reaction thickness.

    DOI： 10.1149/1945-7111/ac075f

    researchmap

    Other Link： https://iopscience.iop.org/article/10.1149/1945-7111/ac075f/pdf

  • Effects of ambient and injection conditions on local heat transfer of impinging flame and spray to chamber wall Reviewed

    Jaehoon JEONG, Susumu SATO, Tsuyoshi NAGASAWA, Hidenori KOSAKA

    Transactions of the JSME (in Japanese)   86 ( 892 )   20-00274   2020.12

    　More details

    Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：Japan Society of Mechanical Engineers  

    DOI： 10.1299/transjsme.20-00274

    researchmap

  • Study on Effect of Nozzle Hole Length to Diameter Ratio on Near-Field Diesel Spray Characteristics at High Density Conditions Reviewed

    Dittapoom Shinabuth, Tsuyoshi Nagasawa, Susumu Sato, Hidenori Kosaka

    International Journal of Automotive Engineering   11 ( 4 )   159 - 168   2020.11

    　More details

    Language：English   Publishing type：Research paper (scientific journal)   Publisher：Society of Automotive Engineers of Japan, Inc.  

    DOI： 10.20485/jsaeijae.11.4_159

    researchmap

  • The Effect of Excess Air Ratio and In-Cylinder Water Injection on Wall Heat Transfer in SI Engine Reviewed

    Tsuyoshi Nagasawa, Takeru Kimura, Soichi Kanbe, Yuichi Okura, Susumu Sato, Hidenori Kosaka

    Vol. 51 ( No. 5 )   739 - 746   2020.8

    　More details

    Authorship：Lead author,　Corresponding author   Language：Japanese   Publishing type：Research paper (scientific journal)  

    researchmap

  • The Effect of In-Cylinder Water Injection Direction on Combustion Characteristics in Lean-Burn SI Engine Reviewed

    Tsuyoshi Nagasawa, Soichi Kanbe, Takeru Kimura, Susumu Sato, Hidenori Kosaka

    Vol. 51 ( No. 5 )   747 - 753   2020.8

    　More details

    Authorship：Lead author,　Corresponding author   Language：Japanese   Publishing type：Research paper (scientific journal)  

    researchmap

  • Thermal efficiency improvement of super-lean burn spark ignition engine by stratified water insulation on piston top surface Reviewed

    Tsuyoshi Nagasawa, Yuichi Okura, Ryota Yamada, Susumu Sato, Hidenori Kosaka, Takeshi Yokomori, Norimasa Iida

    International Journal of Engine Research   Vol. 22 ( No. 5 )   1421 - 1439   2020.4

    　More details

    Authorship：Lead author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1177/1468087420908164

    researchmap

  • Investigation on Effect of Offset Orifice Nozzle under Multi Pulse UltrahighPressure Injection and PPC Combustion Conditions Reviewed

    Pop-Paul Ewphun, Miku Otake, Tsuyoshi Nagasawa, Hidenori Kosaka, Susumu Sato

    International Journal of Automotive Engineering   11 ( 1 )   1 - 8   2020.2

    　More details

    Language：English   Publishing type：Research paper (scientific journal)   Publisher：Society of Automotive Engineers of Japan, Inc.  

    DOI： 10.20485/jsaeijae.11.1_1

    researchmap

  • Combustion Characteristic of Offset Orifice Nozzle Under Multi Pulse Ultrahigh Pressure Injection and PCCI Combustion Conditions Reviewed International journal

    Pop-Paul Ewphun, Miku Otake, Tsuyoshi Nagasawa, Hidenori Kosaka, Susumu Sato

    SAE International Journal of Advances and Current Practices in Mobility   Vol. 2 ( No. 2 )   1002 - 1012   2020.1

    　More details

    Language：English   Publishing type：Research paper (scientific journal)  

    CI engines provide higher thermal efficiency compared to other internal combustion engines. On the other hand large amounts of smoke and NOx are produced during combustion. Smoke and NOx can be reduced by applying Premixed Charge Compression Ignition (PCCI) combustion. Unfortunately, the problems of PCCI combustion include unstable start of combustion and limited operating range. The multi-pulse ultrahigh pressure injection allows fuel to control PCCI combustion. The objective of offset orifice nozzle is to improve mixture formation and shorten spray penetration in order to increase thermal efficiency and control PCCI combustion. The offset orifice nozzle was designed by shift orifice aliment from into the sac center to edge of sac follow swirl direction. Counter bore design was applied to offset orifice nozzle in order to keep the constant orifice length as standard nozzle. This paper investigates the effect of nozzle orifice design on combustion characteristics under multi pulse ultra high pressure injection and PCCI combustion conditions. The experiments were carried out on a single cylinder engine at 0.55 MPa gross IMEP at 1,750 rpm. The injection pulses were 3 pulses equally mass main injection at 150, 200, 250, 300 and 350 MPa injection pressure. In case of standard nozzle orifice, 1st, 2nd pulse are PCCI followed by diffusive combustion in every injection pressure. For offset orifice nozzle orifice at 150 and 200 MPa 1st, 2nd pulse are also PCCI combustion. However when injection pressure is over 200 MPa, the 2nd pulse of rate of heat release become diffusive combustion. The offset orifice nozzle resulted in increased thermal efficiency, NOx and smoke. However significant differences between the smoke of offset orifice nozzle and standard nozzle were not found under injection pressure 300 and 350 MPa. The offset orifice nozzle also resulted in decrease CO and THC.

    DOI： 10.4271/2019-32-0522.

    researchmap

  • Effect of injection pressure and ambient density on spray characteristics of diesel and biodiesel surrogate fuels Reviewed International journal

    Meshack Hawi, Hidenori Kosaka, Susumu Sato, Tsuyoshi Nagasawa, Ahmed Elwardany, Mahmoud Ahmed

    Fuel   Vol. 254   115674   2019.10

    　More details

    Language：English   Publishing type：Research paper (scientific journal)  

    researchmap

  • Direct Visualization of Oxygen Incorporation for Oxygen Reduction on Porous Mixed-Conducting LaSrCoO3 Cathode Reviewed International journal

    Merika Chanthanumataporn, Tsuyoshi Nagasawa, Katsunori Hanamura

    Journal of The Electrochemical Society   166 ( 10 )   F581 - F586   2019.5

    　More details

    Language：English   Publishing type：Research paper (scientific journal)   Publisher：ECS  

    DOI： 10.1149/2.0471910jes

    researchmap

  • Investigation of oxide ion flux at cathode/electrolyte interface in solid oxide fuel cell Reviewed

    Tsuyoshi Nagasawa, Katsunori Hanamura

    Journal of Power Sources   412   695 - 700   2019.2

    　More details

    Authorship：Lead author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

    DOI： 10.1016/j.jpowsour.2018.12.013

    researchmap

  • Microstructure-scaled active sites imaging of a solid oxide fuel cell composite cathode Reviewed International journal

    Tsuyoshi Nagasawa, Katsunori Hanamura

    Journal of Power Sources   Vol. 367, 2017   57 - 62   2017.9

    　More details

    Authorship：Lead author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：ELSEVIER  

    DOI： 10.1016/j.jpowsour.2017.09.042

    researchmap

  • Prediction of overpotential and effective thickness of Ni/YSZ anode for solid oxide fuel cell by improved species territory adsorption model Reviewed International journal

    Tsuyoshi Nagasawa, Katsunori Hanamura

    Journal of Power Sources   353 ( No. 353-2017 )   115 - 122   2017.3

    　More details

    Authorship：Lead author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：Elsevier  

    DOI： 10.1016/j.jpowsour.2017.03.154

    researchmap

  • In situ Raman spectroscopic analysis of the coking resistancemechanism on SrZr0.95Y0.05O3x surface for solid oxide fuel cell anodes Reviewed International journal

    Tsuyoshi Nagasawa, Chen Dongchang, Samson Yuxiu Lai, Meilin Liu, Katsunori Hanamura

    Journal of Power Sources   Vol. 324 ( No. * )   282 - 287   2016.5

    　More details

    Authorship：Lead author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：ELSEVIER  

    DOI： 10.1016/j.jpowsour.2016.05.079

    researchmap

  • Surface reaction controlling hydrogen permeation through lanthanum-doped ceria membrane with asymmetric structure Reviewed International journal

    Masaru KANIE, Warit UA-AMNUEYCHAI, Merika CHANTHANUMATAPORN, Keiji Asada, Tsuyoshi NAGASAWA, Katsunori HANAMURA

    Mechanical Engineering Letters   Vol. 1   15 - 00359   2015.7

    　More details

    Language：English   Publishing type：Research paper (scientific journal)   Publisher：The Japan Society of Mechanical Engineers  

    A thin membrane (thickness = ～10 µm) made of a lanthanum highly-doped cerium oxide (La0.5Ce0.5O2-δ, LDC) was fabricated on a mixed porous layer consisting of Ni and the LDC. Comparing the results of permeation experiments for hydrogen and helium gases confirmed that the asymmetric membrane acted as a mixed protonic and electronic conducting hydrogen separation membrane and that the thin LDC membrane was an almost dense layer. The most striking result of the permeation experiments was that the hydrogen permeation flux increased with increase in the crystal grain boundary length per unit area of the surface and increased in proportion to the square root of hydrogen partial pressure, showing that the flux is controlled by a surface reaction between the adsorbed hydrogen and proton at the crystal grain boundary.

    DOI： 10.1299/mel.15-00359

    researchmap

  • Theoretical analysis of hydrogen oxidation reaction in solid oxide fuel cell anode based on species territory adsorption model Reviewed International journal

    Tsuyoshi Nagasawa, Katsunori Hanamura

    Journal of Power Sources   Vol. 290   168 - 182   2015.5

    　More details

    Authorship：Lead author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：ELSEVIER  

    DOI： 10.1016/j.jpowsour.2015.04.160

    researchmap

  • Power generation characteristics of a SOFC with a Ni/YSZ anode incorporating a SrZr0.95Y0.05O3-α proton conductor Reviewed International journal

    Tsuyoshi Nagaswa, Katsunori Hanamura

    Journal of Thermal Science and Technology   Vol. 10 ( No. 1 )   15-00112   2015.4

    　More details

    Authorship：Lead author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：The Japan Society of Mechanical Engineers  

    In order to improve the performance and stability of anodes for solid oxide fuel cells (SOFCs) under low hydrogen concentration conditions, SrZr0.95Y0.05O3-α (SZY) proton conductor particles were incorporated into the conventional Ni/YSZ anode. Power generation experiments were conducted using the electrolyte-supported single cells with conventional Ni/YSZ and Ni/YSZ-5%SZY anodes. Enhanced output power density under low hydrogen partial pressure conditions was achieved with the modified anode. This enhancement is ascribed to a decline in the anode overpotential of the Ni/YSZ-5%SZY anode, estimated from impedance spectra, compared to that of the conventional Ni/YSZ anode. In addition, the amount of hydrogen adsorption on Ni, YSZ, and SZY was measured using thermal desorption spectroscopy (TDS). This revealed that the proton conductor SZY could adsorb a large amount of hydrogen compared with YSZ. Consequently, the SZY proton conductor may play an important role in the supply/storage of adsorbed hydrogen, or in increasing the oxidation resistance of Ni under low hydrogen concentration conditions.

    DOI： 10.1299/jtst.2015jtst00

    researchmap

▼display all

MISC

  • 火花点火機関における壁面近傍微小量ガスサンプリング手法の開発 Invited

    多ケ谷 優治, 長澤 剛, 小酒 英範

    JSAE Engine Review   Vol. 16 ( No. 3 )   2026.7

    　More details

    Language：Japanese   Publishing type：Article, review, commentary, editorial, etc. (scientific journal)  

    researchmap

  • 高解像同位体イメージングによる高温電極・触媒の反応場可視化と解析 Invited

    長澤剛

    機械の研究   Vol. 78 ( No. 4 )   233 - 241   2026.4

    　More details

    Authorship：Lead author,　Corresponding author   Language：Japanese   Publishing type：Article, review, commentary, editorial, etc. (scientific journal)  

    researchmap

  • 同位体イメージングによる排ガス浄化三元触媒の酸素吸蔵可視化と解析 Invited

    長澤剛

    セラミックス   Vol. 60 ( No. 10 )   688 - 691   2025.10

    　More details

    Authorship：Lead author,　Corresponding author   Language：Japanese   Publishing type：Article, review, commentary, editorial, etc. (scientific journal)  

    researchmap

  • 火炎合成による排ガス浄化触媒の構造制御と粒子生成機構解明に向けたマルチスケール解析 Invited

    峯岸 直也, 長澤 剛, 小酒 英範

    JSAE Engine Review   Vol. 15 ( No. 8 )   2025.9

    　More details

    Language：Japanese   Publishing type：Article, review, commentary, editorial, etc. (scientific journal)  

    researchmap

  • 火炎合成による担持金属触媒の創成と構造制御 Invited

    長澤 剛

    日本機械学会熱工学部門ニュースレター   Vol. 105   9 - 15   2025.4

    　More details

    Authorship：Lead author,　Corresponding author   Language：Japanese   Publishing type：Article, review, commentary, editorial, etc. (scientific journal)  

    researchmap

  • COMODIA2025開催のご案内 Invited

    森吉 泰生, 長澤 剛

    日本機械学会エンジンシステム部門ニュースレター   Vol. 73   1 - 2   2025.3

    　More details

    Language：Japanese   Publishing type：Article, review, commentary, editorial, etc. (scientific journal)  

    researchmap

  • レポート：第34回内燃機関シンポジウム，排気・燃焼生成物・後処理2 Invited

    長澤 剛

    JSAE Engine Review   Vol. 14 ( No. 1 )   2024.2

    　More details

    Authorship：Lead author,　Corresponding author   Language：Japanese   Publishing type：Article, review, commentary, editorial, etc. (scientific journal)  

    researchmap

  • 層状水蒸気遮熱による超希薄燃焼ガソリンエンジンの熱効率向上 Invited

    長澤 剛, 小酒 英範

    自動車技術   Vol. 77 ( No. 12 )   52 - 57   2023.12

    　More details

    Authorship：Lead author,　Corresponding author   Language：Japanese   Publishing type：Article, review, commentary, editorial, etc. (scientific journal)  

    researchmap

  • 水噴射を巧みに操り超希薄燃焼ガソリンエンジンの熱効率を大幅アップ Invited

    長澤 剛, 小酒 英範

    日本機械学会誌   Vol. 125 ( No. 1245 )   40 - 41   2022.8

    　More details

    Authorship：Lead author,　Corresponding author   Language：Japanese   Publishing type：Article, review, commentary, editorial, etc. (scientific journal)  

    researchmap

  • 筒内水噴射による超希薄燃焼ガソリンエンジンの熱効率向上技術 -現象解明と最適化に向けた研究- Invited

    長澤 剛, 小酒 英範

    JSAE Engine Review   Vol. 12 ( No. 4 )   2022.8

    　More details

    Authorship：Lead author,　Corresponding author   Language：Japanese   Publishing type：Article, review, commentary, editorial, etc. (scientific journal)  

    researchmap

  • Imaging of Reaction Distribution in SOFC Cathode by Oxygen Isotope Labeling Combined with Three-Dimensional Microstructural Analysis Invited

    Tsuyoshi Nagasawa, Takaaki Shimura, Naoki Shikazono, Katsunori Hanamura

    The Journal of Fuel Cell Technology   Vol. 21 ( No. 4 )   13 - 19   2022.4

    　More details

    Authorship：Lead author,　Corresponding author   Language：Japanese   Publishing type：Article, review, commentary, editorial, etc. (scientific journal)  

    researchmap

  • 固体酸化物形燃料電池の電極反応場と三次元微細構造の同時観察技術 Invited

    長澤 剛, 志村 敬彬

    クリーンエネルギー   Vol. 31 ( No. 1 )   9 - 14   2022.1

    　More details

    Authorship：Lead author,　Corresponding author   Language：Japanese   Publishing type：Article, review, commentary, editorial, etc. (scientific journal)   Publisher：日本工業出版  

    researchmap

  • スーパーリーンバーンと筒内水噴射の融合が示した超高熱効率ガソリンエンジンの可能性 Invited Reviewed

    長澤剛, 佐藤進, 小酒英範

    JSAE Engine Review   Vol. 10 ( No. 4 )   2020.6

    　More details

    Authorship：Lead author,　Corresponding author   Language：Japanese   Publishing type：Article, review, commentary, editorial, etc. (scientific journal)  

    researchmap

  • 日本伝熱学会奨励賞を受賞して Invited Reviewed

    長澤剛

    伝熱   Vol. 57 ( No. 240 )   15   2018.7

    　More details

    Authorship：Lead author,　Corresponding author   Language：Japanese   Publishing type：Article, review, commentary, editorial, etc. (scientific journal)  

    researchmap

▼display all

Presentations

  • Molecular dynamics study on evaporation of droplets containing Ni-Ce nitrate precursor in flame-assisted spray pyrolysis International conference

    Naoya Minegishi, Tsuyoshi Nagasawa, Hidenori Kosaka, Takuya Mabuchi

    41st International Symposium on Combustion  2026.7 

    　More details

    Event date： 2026.7

    Language：English   Presentation type：Poster presentation  

    Venue：41st International Symposium on Combustion  

    Work in Progress Poster, F-10-04

    researchmap

  • Development of a 3-in-1 proximal sensor for synchronized and co-located near-wall gas, heat flux, and ion measurements International conference

    Yuji Tagaya, Kazuhito Dejima, Tsuyoshi Nagasawa, Hidenori Kosaka

    41st International Symposium on Combustion  2026.7 

    　More details

    Event date： 2026.7

    Language：English   Presentation type：Poster presentation  

    Venue：KYOTO   Country：Japan  

    Work in Progress Poster, F-06-03

    researchmap

  • Highly-dispersed Pt/CeO₂ catalyst for low-temperature CO oxidation prepared by flame-spray pyrolysis International conference

    Tsuyoshi Nagasawa, Peizhou Li, Natsume Toma, Hidenori Kosaka

    41st International Symposium on Combustion  2026.7 

    　More details

    Event date： 2026.7

    Language：English   Presentation type：Poster presentation  

    Country：Japan  

    Poster Presentation, 2-10-06

    researchmap

  • One-step synthesis of high-performance catalysts for CO₂ methanation by flame-assisted spray pyrolysis International conference

    Kosei Okada, Maki Nakamura, Tsuyoshi Nagasawa

    41st International Symposium on Combustion  2026.7 

    　More details

    Event date： 2026.7

    Language：English   Presentation type：Poster presentation  

    Venue：KYOTO   Country：Japan  

    Work in Progress Poster, T-10-06

    researchmap

  • 貴金属種とセリアジルコニアの組成がモデル三元触媒の酸素吸蔵分布に与える影響

    徳増 優志, 渡辺 侑希, 糸山 浩之, 黄 晟ウェイ, 石川 剛志, 長澤 剛

    自動車技術会2026年春季大会  2026.5 

    　More details

    Event date： 2026.5

    Language：Japanese   Presentation type：Oral presentation (general)  

    researchmap

  • 火炎補助式噴霧熱分解法による高性能メタネーション用触媒のワンステップ合成

    岡田 公誠, 中村 真季, 長澤 剛

    第63回日本伝熱シンポジウム  2026.5 

    　More details

    Event date： 2026.5

    Language：Japanese   Presentation type：Poster presentation  

    researchmap

  • ガスサンプリングとの同時測定が可能なイオン電流・熱流束センサの開発

    出島 一仁, 多ケ谷 優治, 長澤 剛, 小酒 英範

    第63回日本伝熱シンポジウム  2026.5 

    　More details

    Event date： 2026.5

    Language：Japanese   Presentation type：Oral presentation (general)  

    researchmap

  • 同位体可視化に基づくPd/CeO2-ZrO2触媒の酸素吸蔵・放出サイトと輸送経路に関する考察

    長澤 剛, 渡辺 侑希, 徳増 優志

    第137回触媒討論会  2026.3 

    　More details

    Event date： 2026.3

    Language：Japanese   Presentation type：Oral presentation (general)  

    researchmap

  • Influence of TWC Microparticle Membrane Fabrication Parameters on Performance of Catalyzed Gasoline Particulate Filters for Exhaust Gas After-Treatment in ICEs

    Eugene Gatete, Tsuyoshi Nagasawa

    The 11th International Conference of Modeling and Diagnostics for Advanced Engine Systems(COMODIA2025)  2025.12 

    　More details

    Event date： 2025.12

    Language：English   Presentation type：Oral presentation (general)  

    researchmap

  • Atomistic Insights into Solute Behavior in Ni–Ce Nitrate Precursor Droplets Relevant to Flame Spray Pyrolysis

    Naoya Minegishi, Tsuyoshi Nagasawa, Hidenori Kosaka, Takuya Mabuchi

    2025MRS Fall Meeting  2025.12 

    　More details

    Event date： 2025.12

    Language：English   Presentation type：Oral presentation (general)  

    researchmap

  • Highly-Dispersed Supported-Metal Catalysts by Flame Synthesis for Energy and Environmental Applications

    Tsuyoshi Nagasawa, Kosei Okada, Naoya Minegishi, Peizhou Li, Hidenori Kosaka, Maki Nakamura

    2025MRS Fall Meeting  2025.12 

    　More details

    Event date： 2025.12

    Language：English   Presentation type：Oral presentation (general)  

    researchmap

  • Effect of Wall Heat Transfer on Near-Wall Gas Composition in Spark Ignition Engine

    Yuji Tagaya, Tsuyoshi Nagasawa, Hidenori Kosaka, Takumi Iwata, Yuji Mihara

    The 11th International Conference of Modeling and Diagnostics for Advanced Engine Systems(COMODIA2025)  2025.12 

    　More details

    Event date： 2025.12

    Language：English   Presentation type：Oral presentation (general)  

    researchmap

  • 拡散燃焼による高分散Pt/CeO2触媒粒子の合成に関する研究

    當間 夏萌, 李 佩周, 小酒 英範, 長澤 剛

    第63回燃焼シンポジウム  2025.11 

    　More details

    Event date： 2025.11

    Language：Japanese   Presentation type：Poster presentation  

    researchmap

  • 同位体イメージングによるモデル三元触媒内の酸素吸蔵分布可視化と解析

    渡辺 侑希, 徳増 優志, 長澤 剛, 佐藤 進, 小酒 英範, 糸山 浩之, 黄 晟ウェイ, 石川 剛志

    日本機械学会熱工学カンファレンス2025  2025.10 

    　More details

    Event date： 2025.10

    Language：Japanese   Presentation type：Oral presentation (general)  

    researchmap

  • Effect of TWC particles Membrane Fabrication Parameters on the Performance of Advanced Gasoline Particulate Filter

    Eugene Gatete, Tsuyoshi Nagasawa

    SAE 2025 Energy&Propulsion Coference&Exhibition  2025.10 

    　More details

    Event date： 2025.10

    Language：English   Presentation type：Oral presentation (general)  

    researchmap

  • 簡便な火炎合成法によるNi/CeO2メタネーション触媒の開発

    中村真季, 岡田公誠, 長澤剛

    化学工学会第56回秋季大会  2025.9 

    　More details

    Event date： 2025.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    researchmap

  • 火炎式噴霧熱分解法によるメタネーション用触媒の合成と構造評価

    岡田 公誠, 長澤 剛, 中村 真季

    第62回日本伝熱シンポジウム  2025.5 

    　More details

    Event date： 2025.5

    Language：Japanese   Presentation type：Oral presentation (general)  

    researchmap

  • 火花点火機関における壁面近傍ガス組成解析手法の開発

    多ケ谷 優治, 長澤 剛, 小酒 英範

    第62回伝熱シンポジウム  2025.5 

    　More details

    Event date： 2025.5

    Language：Japanese   Presentation type：Poster presentation  

    researchmap

  • Research on the synthesis of Pt/CeO2 nanoparticles by diffusion combustion

    Haishiyo Ri, Tsuyoshi Nagasawa, Hidenori Kosaka

    HTSJ International Heat Transfer Symposium  2025.5 

    　More details

    Event date： 2025.5

    Language：English   Presentation type：Oral presentation (general)  

    researchmap

  • Evolution of salt clusters in evaporating droplets containing metal precursors under high-temperature environments: A molecular dynamics simulation study

    Naoya Minegishi, Tsuyoshi Nagasawa, Hidenori Kosaka, Takuya Mabuchi

    HTSJ International Heat Transfer Symposium  2025.5 

    　More details

    Event date： 2025.5

    Language：English   Presentation type：Oral presentation (general)  

    researchmap

  • Visualization of Oxygen Storage Distribution in a Model Three-Way Catalyst under Different Oxygen Storage Conditions

    Tsuyoshi Nagasawa, Yuki Watanabe, Yuma Hayashi, Susumu Sato, Hidenori Kosaka, Hiroyuki Itoyama, Chengwei Huang

    SAE World Congress Experience 2025  2025.5 

    　More details

    Event date： 2025.5

    Language：English   Presentation type：Oral presentation (general)  

    researchmap

  • 炎式噴霧熱分解によるメタネーション用触媒の合成と構造評価

    中村 真季, 岡田 公誠, 長澤 剛

    第135回触媒討論会  2025.3 

    　More details

    Event date： 2025.3

    Language：Japanese   Presentation type：Poster presentation  

    researchmap

  • 同位体ラベリングによる高温電極・触媒の反応場メソスケール可視化

    長澤 剛

    文部科学省マテリアル先端リサーチインフラ「第3回革新的なエネルギー変換を可能とするマテリアル領域」シンポジウム  2024.12 

    　More details

    Language：Japanese   Presentation type：Oral presentation (invited, special)  

    Venue：東京  

    researchmap

  • Knock Analysis in Super-Lean Burn Spark Ignition Engine with Water Injection using Gasoline Surrogate Fuels

    Tsuyoshi Nagasawa, Hidenori Kosaka

    Extended Abstracts of The Third Pacific Rim Thermal Engineering Conference  2024.12 

    　More details

    Event date： 2024.12

    Language：English   Presentation type：Oral presentation (general)  

    researchmap

  • Research on Unburned Hydrocarbon Production and Emission in Super-Lean Burn Spark Ignition Engine by Fast-FID Measurement International conference

    Yuji Tagaya, Tsuyoshi Nagasawa, Hidenori Kosaka

    SAE 2024 Energy & Propulsion Conference & Exhibition  2024.11 

    　More details

    Language：English   Presentation type：Oral presentation (general)  

    Venue：Columbus  

    researchmap

  • 火炎中における金属前駆体含有液滴の蒸発過程に関する分子動力学解析

    峯岸 直也, 長澤 剛, 小酒 英範

    第62回燃焼シンポジウム講演論文集  2024.11 

    　More details

    Event date： 2024.11

    Language：Japanese   Presentation type：Oral presentation (general)  

    researchmap

  • Study on Near-Wall Gas Composition by Micro Gas Sampling Method in Spark Ignition Engine

    Yuji Tagaya, Tsuyoshi Nagasawa, Hidenori Kosaka

    2024.11 

    　More details

    Event date： 2024.11

    Language：Japanese   Presentation type：Oral presentation (general)  

    researchmap

  • Advanced Imaging and Analysis of High-Temperature Electrodes and Catalysts by Isotope Labeling International conference

    Tsuyoshi Nagasawa

    Research Seminar at Hanyang University  2024.10 

    　More details

    Language：English   Presentation type：Oral presentation (invited, special)  

    Venue：Seoul  

    researchmap

  • 酸素放出・吸蔵状態の違いがパラジウム/セリアジルコニア三元触媒の酸素吸蔵分布に与える影響

    渡辺 侑希, 林 勇真, 長澤 剛, 佐藤 進, 小酒 英範, 糸山 浩之, 黄 晟ウェイ

    2024年秋季大会学術講演会講演予稿集  2024.10 

    　More details

    Event date： 2024.10

    Language：Japanese   Presentation type：Oral presentation (general)  

    researchmap

  • 燃焼場を利用した高活性・高耐久な担持金属触媒粒子の合成に関する研究

    長澤 剛, 峯岸 直也, 李 佩周, 小酒 英範

    第61回日本伝熱シンポジウム  2024.5 

    　More details

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：神戸  

    researchmap

  • 火炎式噴霧熱分解における金属前駆体含有液滴の蒸発に関する分子動力学シミュレーション

    峯岸 直也, 長澤 剛, 小酒 英範

    第61回日本伝熱シンポジウム  2024.5 

    　More details

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：神戸  

    researchmap

  • Investigation on the Influence of Nozzle Orifice Position under Conditions of Ultra-high Pressure Multi Pulse Injection and PCCI Combustion

    Pop-Paul Ewphun, Tsuyoshi Nagasawa, Hidenori Kosaka, Susumu Sato

    AIP Conference Proceedings  2024.5  AIP Publishing

    　More details

    Event date： 2024.5

    Language：English  

    researchmap

  • 火花点火機関における壁面消炎層近傍微小量ガスサンプリング手法の開発

    多ケ谷 優治, 長澤 剛, 小酒 英範

    第34回内燃機関シンポジウム講演予稿集  2023.12 

    　More details

    Event date： 2023.12

    Language：Japanese   Presentation type：Oral presentation (general)  

    researchmap

  • 噴口オフセットノズルを用いたディーゼル燃焼におけるスワール比および噴射条件の影響

    三浦 拓也, 市川 優斗, 小酒 英範, 長澤 剛, 佐藤 進, 曹 凡, 西田 恵哉

    第34回内燃機関シンポジウム講演予稿集  2023.12 

    　More details

    Event date： 2023.12

    Language：Japanese   Presentation type：Oral presentation (general)  

    researchmap

  • 筒内流動を活用した急速ディーゼル燃焼に関する研究

    小野 兼, 長澤 剛, 小酒 英範

    第34回内燃機関シンポジウム講演予稿集  2023.12 

    　More details

    Event date： 2023.12

    Language：Japanese   Presentation type：Oral presentation (general)  

    researchmap

  • The Effect of Flame Temperature on Structure of Ceria-Supported Pt Nanoparticles in Flame-Assisted Spray Pyrolysis International conference

    Naoya Minegishi, Peizhou Li, Tsuyoshi Nagasawa, Hidenori Kosaka

    2023 MRS (Materials Research Society) Fall Meeting  2023.11 

    　More details

    Language：English   Presentation type：Oral presentation (general)  

    Venue：Boston  

    researchmap

  • 火炎式噴霧熱分解における火炎温度がPt/CeO2ナノ粒子の構造とCO酸化特性に及ぼす影響

    李佩周, 峯岸 直也, 長澤 剛, 小酒 英範

    第61回燃焼シンポジウム講演論文集  2023.11 

    　More details

    Event date： 2023.11

    Language：Japanese  

    researchmap

  • 同位体イメージングとDFT計算によるPd/CeO2-ZrO2触媒の酸素吸放出機構の考察

    長澤 剛, 石川 隼, 佐藤 進, 小酒 英範, Hyo Min You, Kyeounghak Kim

    第132回触媒討論会予稿集  2023.9 

    　More details

    Event date： 2023.9

    Language：Japanese  

    researchmap

  • Research on Super-Lean Burn Spark Ignition Engine with In-Cylinder Water Injection using Gasoline Surrogate Fuels

    Tsuyoshi Nagasawa, Soh Ishibashi, Hidenori Kosaka

    SAE Technical Paper  2023.8 

    　More details

    Event date： 2023.8

    Language：English  

    researchmap

  • 同位体ラベリングと反応クエンチングによる三元触媒の酸素吸蔵可視化と解析

    長澤 剛

    自動車技術会 2022-2023年度第4回排気触媒システム部門委員会  2023.6 

    　More details

    Language：Japanese   Presentation type：Oral presentation (invited, special)  

    Venue：東京  

    researchmap

  • 火炎式噴霧熱分解による白金/セリアナノ粒子の合成と排ガス浄化触媒への適用

    峯岸 直也, 李 佩周, 長澤 剛, 小酒 英範

    第60回日本伝熱シンポジウム講演論文集  2023.5 

    　More details

    Event date： 2023.5

    Language：Japanese   Presentation type：Poster presentation  

    researchmap

  • Visualization of oxide ion incorporation in LSCM-based fuel electrodes of SOEC during CO2 electrolysis

    Koudai Takahashi, Tsuyoshi Nagasawa, Merika Chanthanumataporn, Katsunori Hanamura

    Proceedings of the International Conference on Power Engineering-2023  2023.5 

    　More details

    Event date： 2023.5

    Language：English  

    researchmap

  • 同位体クエンチ法による排ガス浄化触媒の酸素吸蔵可視化技術

    長澤 剛

    時代を刷新する会 環境技術委員会  2023.2 

    　More details

    Language：Japanese   Presentation type：Oral presentation (invited, special)  

    Venue：東京  

    researchmap

  • 火炎式噴霧熱分解による白金/セリアナノ粒子の合成とCO触媒燃焼特性の評価

    峯岸 直也, 李佩周, 長澤 剛, 小酒 英範

    第60回燃焼シンポジウム講演論文集  2022.11 

    　More details

    Event date： 2022.11

    Language：Japanese  

    researchmap

  • 高速FID計測による超希薄燃焼火花点火機関における未燃炭化水素生成と排出に関する研究

    多ケ谷 優治, 長澤 剛, 小酒 英範

    第33回内燃機関シンポジウム 予稿集  2022.11 

    　More details

    Event date： 2022.11

    Language：Japanese  

    researchmap

  • 同位体クエンチ法によるパラジウム/セリアジルコニア三元触媒の酸素吸蔵可視化 －反応温度の影響－

    長澤 剛, 石川 隼, 佐藤 進, 小酒 英範

    2022年秋季大会学術講演会講演予稿集  2022.10 

    　More details

    Event date： 2022.10

    Language：Japanese  

    researchmap

  • Nanoscale visualization of oxygen storage at Pd/CeO2-ZrO2 solid solution interface through oxygen isotope labeling

    Tsuyoshi Nagasawa, Shun Ishikawa, Susumu Sato, Hidenori Kosaka

    2022.8 

    　More details

    Event date： 2022.8

    Language：English  

    researchmap

  • Relationship Between Active Sites Distribution and 3D Microstructure of LSM/YSZ Composite Cathode by Oxygen Isotope Labeling Combined with FIB-SEM Technique

    Tsuyoshi Nagasawa, Takaaki Shimura, Naoki Shikazono, Katsunori Hanamura

    2022.7 

    　More details

    Event date： 2022.7

    Language：English  

    researchmap

  • High-speed Measurement of Unburnt Hydrocarbon in Combustion Chamber and Exhaust in Super-lean Burn Spark Ignition Engine

    Tsuyoshi Nagasawa, Yuji Tagaya, Takeru Kimura, Hidenori Kosaka

    COMODIA 2022 Extended Summary  2022.7 

    　More details

    Event date： 2022.7

    Language：English  

    researchmap

  • 火炎式噴霧熱分解による白金/セリアナノ粒子の合成と構造評価

    長澤 剛, 峯岸 直也, 小酒 英範

    第59回日本伝熱シンポジウム  2022.5 

    　More details

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：岐阜  

    researchmap

  • 急速圧縮膨張装置を用いた超希薄燃焼火花点火機関における筒内水噴射に関する研究

    高瀬 優佑, 神戸聡一, 長澤 剛, 小酒 英範, 石井 大二郎, 三原 雄司

    第32回内燃機関シンポジウム 講演予稿集  2021.12 

    　More details

    Event date： 2021.12

    Language：Japanese  

    researchmap

  • 噴孔オフセットノズルを用いたディーゼル燃焼改善効果の検証

    佐藤 進, Pop-Paul Ewphun, 小竹 視久, 長澤 剛, 小酒 英範

    第32回内燃機関シンポジウム 講演予稿集  2021.12 

    　More details

    Event date： 2021.12

    Language：Japanese  

    researchmap

  • Study on Combustion and Wall Heat Transfer of Super-Lean Burn SI Engine with In-Cylinder Water Injection using RCEM

    Tsuyoshi Nagasawa, Soichi Kanbe, Yusuke Takase, Susumu Sato, Hidenori Kosaka, Daijiro Ishii, Yuji Mihara

    Proceedings of 13th ASPACC  2021.12 

    　More details

    Event date： 2021.12

    Language：English  

    researchmap

  • NanoSIMS Imaging of Reaction Distribution in Solid Oxide Fuel Cell Electrodes

    Tsuyoshi Nagasawa

    AMETEK CAMECA Korea (Online)  2021.12 

    　More details

    Event date： 2021.12

    Language：English   Presentation type：Oral presentation (invited, special)  

    researchmap

  • 構造観察とバーナ火炎数値解析による白金/セリアナノ粒子燃焼合成過程の考察

    峯岸 直也, 長澤 剛, 小酒 英範

    第59回燃焼シンポジウム講演論文集  2021.11 

    　More details

    Event date： 2021.11

    Language：Japanese  

    researchmap

  • Structural Characterization of Ceria-supported Pt Nanoparticles by Flame Spray Pyrolysis

    Tsuyoshi Nagasawa, Kai Matsumoto, Naoya Minegishi, Susumu Sato, Hidenori Kosaka

    Extended Abstract of The 2nd Asian Conference on Thermal Sciences  2021.10 

    　More details

    Event date： 2021.10

    Language：English  

    researchmap

  • 同位体ラベリングと反応クエンチングによる三元触媒酸素吸蔵過程の可視化解析

    長澤 剛, 小林 厚史, 佐藤 進, 小酒 英範, 花村 克悟, 寺田 亜美, 三島 崇生

    2021年秋季大会学術講演会講演予稿集  2021.10 

    　More details

    Event date： 2021.10

    Language：Japanese  

    researchmap

  • 火花点火式ガソリン機関のエネルギーバランス解析に関する研究

    窪山 達也, 滝澤 勇太, 森吉 泰生, 長澤 剛, 小酒 英範

    2021年秋季大会学術講演会講演予稿集  2021.10 

    　More details

    Event date： 2021.10

    Language：Japanese  

    researchmap

  • 同位体クエンチ法による三元触媒酸素吸蔵挙動の可視化

    長澤 剛, 小林 厚史, 佐藤 進, 小酒 英範, 花村 克悟, 寺田 亜美, 三島 崇生

    第128回触媒討論会  2021.9 

    　More details

    Language：Japanese   Presentation type：Oral presentation (general)  

    researchmap

  • CH4-SCRシステムにおけるゼオライト触媒のCH4・NOx同時浄化特性の評価と触媒上反応プロセスについての考察

    尾嶋 雄貴, 佐藤 進, 長澤 剛, 小酒 英範, 福島 悠樹

    第91回マリンエンジニアリング学術講演会講演論文集  2021.9 

    　More details

    Event date： 2021.9

    Language：Japanese  

    researchmap

  • Electrochemical Reaction Mechanism of LSM-YSZ Composite Cathode Based on 3D Simulation of Oxygen Diffusion and Oxygen Labeling Experiment

    Takaaki Shimura, Tsuyoshi Nagasawa, Naoki Shikazono, Katsunori Hanamura

    ECS Transactions  2021.7 

    　More details

    Event date： 2021.7

    Language：English  

    researchmap

  • 同位体クエンチ法による三元触媒酸素吸蔵能に関する研究

    長澤 剛, 小林 厚史, 佐藤 進, 小酒 英範

    第58回日本伝熱シンポジウム講演論文集  2021.5 

    　More details

    Event date： 2021.5

    Language：Japanese  

    researchmap

  • LSM/YSZコンポジット電極の酸素同位体ラベリングと三次元微細構造内酸素拡散数値シミュレーション

    志村 敬彬, 長澤 剛, 鹿園 直毅, 花村 克悟

    第58回日本伝熱シンポジウム講演論文集  2021.5 

    　More details

    Event date： 2021.5

    Language：Japanese  

    researchmap

  • 酸素同位体ラベリングと三次元簿構造観察を組み合わせたLSM/YSZ コンポジット電極の反応場分布解析

    長澤 剛, 志村 敬彬, 鹿園 直毅, 花村 克悟

    第29回SOFC研究発表会要旨集  2020.12 

    　More details

    Event date： 2020.12

    Language：Japanese  

    researchmap

  • LSM/YSZ コンポジット電極の三次元構造を用いた電気化学シミュレーションと酸素同位体分布の⽐較による電極内反応メカニズムの検証

    志村 敬彬, 長澤 剛, 鹿園 直毅, 花村 克悟

    第29回SOFC研究発表会要旨集  2020.12 

    　More details

    Event date： 2020.12

    Language：Japanese  

    researchmap

  • 筒内流動強化によるディーゼル燃焼改善に関する研究

    坂寄 裕二, 菱田 充優, 長澤 剛, 佐藤 進, 小酒 英範

    第31回内燃機関シンポジウム 講演論文集  2020.11 

    　More details

    Event date： 2020.11

    Language：Japanese  

    researchmap

  • バーナ拡散火炎を用いた燃焼合成による白金/セリアナノ粒子の構造評価

    松本 魁, 長澤 剛, 佐藤 進, 小酒 英範

    第58回燃焼シンポジウム講演論文集  2020.11 

    　More details

    Event date： 2020.11

    Language：Japanese  

    researchmap

  • 同位体クエンチ法による後処理触媒内化学種分布の計測技術開発

    小林 厚史, 長澤 剛, 佐藤 進, 小酒 英範

    第31回内燃機関シンポジウム 講演論文集  2020.11 

    　More details

    Event date： 2020.11

    Language：Japanese  

    researchmap

  • 実路走行排出ガス計測データを用いた深層学習によるディーゼル乗用車の排出ガス予測

    姫野凌, 阿部誠也, 長澤剛, 小酒英範, 佐藤進, 丹下健, 田中光太郎

    2020年秋季大会学術講演会講演予稿集  2020.10 

    　More details

    Event date： 2020.10

    Language：Japanese  

    researchmap

  • 燃料噴射ノズル内部形状がノズル内流れとディーゼル燃料噴射特性に与える影響

    矢部水貴, Butmarasri Athiwat, 長澤剛, 佐藤進, 小酒英範

    2020年秋季大会学術講演会講演予稿集  2020.10 

    　More details

    Event date： 2020.10

    Language：Japanese  

    researchmap

  • Investigation on Effect of Offset Orifice Nozzle on Diesel Combustion Characteristics

    Pop-Paul Ewphun, Tsuyoshi Nagasawa, Hidenori Kosaka, Susumu Sato

    SAE Technical Paper 2020-01-2038  2020.9 

    　More details

    Event date： 2020.9

    Language：English  

    researchmap

  • Distribution of Electrochemical Reaction Sites in SOFC Composite Cathode Based on Isotope Labeling Coupled with Three-dimensional Electrochemical Simulation

    Takaaki Shimura, Tsuyoshi Nagasawa, Naoki Shikazono, Katsunori Hanamura

    14th European SOFC & SOE Forum Proceedings  2020.9 

    　More details

    Event date： 2020.9

    Language：English  

    researchmap

  • Stereoscopic Micro-PIV Measurement of Near-Wall Velocity Distribution in Strong Tumble Flow under Motored SI Engine Condition

    Yoko Yamakita, Jaeok Bae, Tsuyoshi Nagasawa, Hidenori Kosaka

    2020, SAE Technical Paper 2020-01-2019  2020.9 

    　More details

    Event date： 2020.9

    Language：English  

    researchmap

  • The Effect of Excess Air Ratio and Engine Load on Wall Heat Transfer Characteristics in SI Engine

    Tsuyoshi Nagasawa, Takeru Kimura, Soichi Kanbe, Susumu Sato, Hidenori Kosaka

    2020.6 

    　More details

    Event date： 2020.6

    Language：English  

    researchmap

  • 酸素同位体ラベリングと三次元微細構造解析を用いた固体酸化物燃料電池コンポジット空気極の活性反応場の評価

    志村 敬彬, 長澤 剛, 鹿園 直毅, 花村 克悟

    2020.6 

    　More details

    Event date： 2020.6

    Language：Japanese  

    researchmap

  • 希薄燃焼SIエンジンにおける筒内水噴射位置が燃焼特性に与える影響

    長澤剛, 神戸聡一, 木村岳, 佐藤進, 小酒英範

    2020年春季大会学術講演会講演予稿集  2020.5 

    　More details

    Event date： 2020.5

    Language：Japanese  

    researchmap

  • Study on Effect of Nozzle Hole Length to Diameter Ratio on Near-Field Diesel Spray Characteristics at High Density Conditions

    Dittapoom Shinabuth, Tsuyoshi Nagasawa, Susumu Sato, Hidenori Kosaka

    2020年春季大会学術講演会講演予稿集  2020.5 

    　More details

    Event date： 2020.5

    Language：English  

    researchmap

  • Real-World Emission Analysis Methods Using Sensor-Based Emission Measurement System

    Susumu Sato, Seiya Abe, Ryo Himeno, Tsuyoshi Nagasawa, Hidenori Kosaka, Kotaro Tanaka, Takeshi Tange

    SAE Technical Papers  2020.4 

    　More details

    Event date： 2020.4

    Language：English  

    Every year, exhaust gas regulations are getting stricter with the intention to solve the average air pollution problem, however, local roadside pollution is still a pressing issue. In order to solve this local roadside pollution problem, it is necessary to evaluate and/or predict “where” and “how much” pollutants such as NOx are emitted. To predict the local roadside pollution, it is necessary to collect emissions data from various kinds of vehicles driving on realworld and analyze them. In recent years, Real Driving Emission regulations using PEMS (Portable Emission Measurement System) have been introduced mainly in Europe. A typical PEMS configuration can weigh close to 100 kg however, and its weight affects the driving conditions of vehicles running on actual roads. In this study, we focused on the analysis of real-world emissions using SEMS (Sensorbased Emission Measurement System). Whereas PEMS is a method of sampling and analyzing exhaust gas, SEMS directly attaches a NOx sensor and PM sensor to the exhaust pipe and measures the concentration. Although SEMS has a limited number of items that can be measured compared to PEMS, other analysis is possible by devising the analysis method. This paper focuses on the analysis method of real-world emissions using SEMS and aims to examine the analysis method of CO2 emission concentration, exhaust gas flowrate, and local roadside emissions from the measured value of SEMS. In addition, an example of applying this analysis method using on-road test data of a diesel passenger car equipped with SEMS is shown. The NOx sensor can measure not only the NOx concentration but also the O2 concentration and air-fuel ratio. It is clarified that the CO2 concentration at wet condition can be calculated with high accuracy by using the measured values of the O2 concentration. Also, the exhaust flowrate is obtained by combining the intake air flow rate acquired through the vehicle's OBD and the air-fuel ratio measured by the NOx sensor. At that time, the exhaust gas density is also calculated based on the air-fuel ratio, so that the exhaust flowrate can be calculated with higher accuracy.

    researchmap

  • Study on Structural Control of Metal/Oxide Nanoparticles by Combustion Synthesis Method

    Tsuyoshi Nagasawa, Kai Matsumoto, Susumu Sato, Hidenori Kosaka

    Extended Abstracts of The Second Pacific Rim Thermal Engineering Conference  2019.12 

    　More details

    Event date： 2019.12

    Language：English  

    researchmap

  • 吸排気管への含水エタノール添加によるディーゼル機関の燃焼と排気に与える影響

    小松 祐也, 高山 亮太, 長澤 剛, 佐藤 進, 小酒 英範

    第30回内燃機関シンポジウム 講演予稿集  2019.12 

    　More details

    Event date： 2019.12

    Language：Japanese  

    researchmap

  • SIエンジンにおける空気過剰率及び筒内水噴射が壁面熱伝達に及ぼす影響

    長澤 剛, 木村 岳, 神戸聡一, 大倉 優一, 佐藤 進, 小酒 英範

    第30回内燃機関シンポジウ 講演予稿集  2019.12 

    　More details

    Event date： 2019.12

    Language：Japanese  

    researchmap

  • 燃焼合成による白金/セリアナノ粒子の構造制御に関する研究

    松本 魁, 長澤 剛, 佐藤 進, 小酒 英範

    第57回燃焼シンポジウム講演論文集  2019.11 

    　More details

    Event date： 2019.11

    Language：Japanese  

    researchmap

  • Visualization of Oxide Ion Diffusion Around Double Phase Boundary in Cathode in SOFC Using Isotope Quenching Method

    Katsunori Hanamura, Hirotoshi Inayoshi, Merika Chanthanumataporn, Tsuyoshi Nagasawa

    ISTP30 Proceedings  2019.11  ISTP30

    　More details

    Event date： 2019.11

    Language：English  

    researchmap

  • Characterization of Active Sites in Solid Oxide Fuel Cell Composite Cathode through Oxygen Isotope Labeling Combined with Tree- Dimensional Microstrucural Analysis by Focused Ion Beam - Scanning Electron Microscopy

    Tsuyoshi Nagasawa, Takaaki Shimura, Naoki Shikazono, Katsunori Hanamura

    16th International Symposium on Solid Oxide Fuel Cells Proceedings  2019.9  The SOFC Society of Japan

    　More details

    Event date： 2019.9

    Language：English  

    researchmap

  • 車載型排出ガス計測データに基づく交通要素を用いた ディーゼル乗用車の排出ガス予測に関する研究

    阿部誠也, 佐々木凌太, 長澤 剛, 小酒英範, 佐藤 進, 丹下 健, 田中光太郎

    2019.9 

    　More details

    Event date： 2019.9

    Language：Japanese   Presentation type：Poster presentation  

    researchmap

  • Quantitative Analysis of Oxide Ion Flux at SOFC Cathode / Electrolyte Interface by Quenching and Isotope Labeling

    Tsuyoshi Nagasawa, Katsunori Hanamura

    22nd International Conference on Solid State Ionics proceedings  2019.6  Solid State Ionics

    　More details

    Event date： 2019.6

    Language：English  

    researchmap

  • SOFC 空気極の同位体クエンチ法を用いた二相界面における酸素イオン拡散の可視化

    花村 克悟, 稲吉 裕俊, チャンタヌマタポン メリカ, 長澤 剛

    第24回動力・エネルギー技術シンポジウム講演論文集  2019.6  一般社団法人 日本機械学会

    　More details

    Event date： 2019.6

    Language：Japanese  

    researchmap

  • 超希薄燃焼SIエンジンにおける筒内水噴射がノック及び冷却損失に与える影響

    長澤剛, 大倉優一, 佐藤進, 小酒英範

    第56回日本伝熱シンポジウム講演論文集  2019.5 

    　More details

    Event date： 2019.5

    Language：Japanese  

    researchmap

  • Effect of Diesel Injector Nozzle Hole Deposit on Fuel Injection and Spray Characteristics

    Athiwat Butmarasri, Tsuyoshi Nagasawa, Susumu Sato, Hidenori Kosaka

    公益社団法人自動車技術会 2019年春季大会学術講演会 講演予稿集  2019.5 

    　More details

    Event date： 2019.5

    Language：English  

    researchmap

  • Study on Effect of Nozzle Specifications on Spray Combustion Characteristics at High Density Conditions

    Dittapoom Shinabuth, Tsuyoshi Nagasawa, Susumu Sato, Hidenori Kosaka

    公益社団法人自動車技術会 2019年春季大会学術講演会 講演予稿集  2019.5 

    　More details

    Event date： 2019.5

    Language：English  

    researchmap

  • Thermal Efficiency Improvement of SI engine by Direct Water Injection toward Piston Surface under Super-Lean Burn Condition

    Tsuyoshi Nagasawa, Yuichi Okura, Ryota Yamada, Susumu Sato, Hidenori Kosaka, Takeshi Yokomori, Norimasa Iida

    2019.4 

    　More details

    Event date： 2019.4

    Language：English  

    researchmap

  • The Estimation and the Prediction of Real World Driving Emission from Diesel Passenger Vehicle Based on SEMS Measurement

    Susumu Sato, Tsuyoshi Nagasawa, Hidenori Kosaka, Ryota Sasaki, Seiya Abe, Kotaro Tanaka, Yuta Matsumoto, Isao Suzuki, Takeshi Tange

    2019.3 

    　More details

    Event date： 2019.3

    Language：English  

    researchmap

  • Nano-micro scaled Visualization of Oxide Ion Transport in SOFC Electrodes

    Tsuyoshi Nagasawa, Katsunori Hanamura

    5th SOIFIT Workshop Proceedings  2019.1 

    　More details

    Event date： 2019.1

    Language：English   Presentation type：Oral presentation (invited, special)  

    researchmap

  • Advanced imaging technique of nano-micro scaled transport and reactions in oxide materials

    Tsuyoshi Nagasawa

    2018.12 

    　More details

    Event date： 2018.12

    Language：English  

    researchmap

  • A study on improvement of diesel combustion through hydrous ethanol injection into exhaust port.

    Takayama Ryota, Komatsu Yuya, Nagasawa Tsuyoshi, Sato Susumu, Kosaka Hidenori

    2018.11 

    　More details

    Event date： 2018.11

    Language：Japanese  

    researchmap

  • スーパーリーンバーン SI エンジンにおける筒内水噴射による熱効率向上に関する研究

    大倉 優一, 長澤 剛, 山田 涼太, 佐藤 進, 小酒 英範

    2018.11 

    　More details

    Event date： 2018.11

    Language：Japanese  

    researchmap

  • 超高圧燃料噴射がディーゼル燃焼の燃焼期間およびヒートバランスに及ぼす影響

    佐藤 進, Pop-Paul Ewphun, 長澤 剛, 小酒 英範

    2018.11 

    　More details

    Event date： 2018.11

    Language：Japanese  

    researchmap

  • 改良型吸着種領域モデルに基づくSOFC多孔質燃料極の過電圧解析

    長澤 剛, 花村 克悟

    熱工学コンファレンス2018講演論文集  2018.10 

    　More details

    Event date： 2018.10

    Language：Japanese  

    researchmap

  • Imaging of oxygen isotope diffusion in anode-supported solid oxide fuel cell

    Katsunori Hanamura, Merika Chanthanumataporn, Tsuyoshi Nagasawa

    2018.9 

    　More details

    Event date： 2018.9

    Language：Japanese  

    researchmap

  • Direct Visualization of Active Sites and Oxide-ion Distribution in an Anode-supported Solid Oxide Fuel Cell

    Merika Chanthanumataporn, Tsuyoshi Nagasawa, Katsunori Hanamura

    13th European SOFC & SOE Forum 2018 proceedings  2018.7 

    　More details

    Event date： 2018.7

    Language：English  

    researchmap

  • Oxide-ion Diffusion Imaging in an Anode-supported Solid Oxide Fuel Cell Through Oxygen Isotope Labeling

    Merika Chanthanumataporn, Tsuyoshi Nagasawa, Katsunori Hanamura

    Grand Renewable Energy 2018-International Conference and Exhibition- proceedings  2018.6 

    　More details

    Event date： 2018.6

    Language：English  

    researchmap

  • 同位体クエンチラベリングによるSOFC空気極/電解質界面の酸化物イオンフラックス解析

    長澤剛, 花村克悟

    第55回日本伝熱シンポジウム講演プログラム  2018  公益社団法人 日本伝熱学会

    　More details

    Event date： 2018

    Language：Japanese  

    researchmap

  • Electrochemical reactions on SOFC porous electtrodes: A study based on species territory adsorption model and active sites imaging

    Tsuyoshi Nagasawa, Katsunori Hanamura

    2017.12 

    　More details

    Event date： 2017.12

    Language：Japanese  

    researchmap

  • QUENCHING OF CHEMICAL SPECIES TRANSPORT IN SOFC BY He IMPINGING JET FOR VISUALIZATION OF OXIDE ION PATH IN COMPOSITE ELECTRODES

    Tsuyoshi Nagasawa, Katsunori Hanamura

    TFEC9 Proceedings  2017.10  JSME and KSME

    　More details

    Event date： 2017.10

    Language：English  

    researchmap

  • Nano-micro scaled active site imaging of porous composite cathode in solid oxide fuel cell by quenching and oxygen isotope labeling

    Tsuyoshi Nagasawa, Katsunori Hanamura

    9th US-Japan Joint Seminar on Nanoscale Transport Phenomena  2017.7  9th US-Japan Joint Seminar on Nanoscale Transport Phenomena

    　More details

    Event date： 2017.7

    Language：English   Presentation type：Poster presentation  

    researchmap

  • Experimental and Detailed Kinetic modeling Study of Carbon Deposition on Ni/YSZ Anode in SOFC

    Hirotatsu Watanabe, Masaru Kanie, Merika Chanthanumataporn, Tsuyoshi Nagasawa, Katsunori Hanamura

    ECS Transactions  2017.7  The Electrochemical Society

    　More details

    Event date： 2017.7

    Language：English  

    researchmap

  • Particle-scaled Visuallization of Active Sites in LSM/ScSZ Composite Cathode of SOFC through Oxygen Isotope Labeling

    Tsuyoshi Nagasawa, Katsunori Hanamura

    ECS Transactions  2017.7  The Electrochemical Society

    　More details

    Event date： 2017.7

    Language：English  

    researchmap

  • Imaging Technique of Ionic Diffusion in LSM-based Composite Cathode of Solid Oxide Fuel Cell

    Tsuyoshi Nagasawa, Katsunori Hanamura

    21st International Conference Solid State Ionics Proceedings  2017.6  21st International Conference Solid State Ionics

    　More details

    Event date： 2017.6

    Language：English  

    researchmap

  • 同位体ラベリングによるSOFC空気極の酸素イオンパス粒子スケール可視化

    長澤 剛, 花村 克悟

    第54回日本伝熱シンポジウム講演論文集  2017.5  公益社団法人 日本伝熱学会

    　More details

    Event date： 2017.5

    Language：Japanese  

    researchmap

  • SOFCのNi /YSZ 燃料極上における炭素析出および表面反応メカニズムの解明

    渡部 弘達, 蟹江 優, Chanthanumataporn Merika, 長澤 剛, 花村 克悟

    第54回日本伝熱シンポジウム講演論文集  2017.5  公益社団法人 日本伝熱シンポジウム

    　More details

    Event date： 2017.5

    Language：Japanese  

    researchmap

  • Electrochemically Effective Area of Solid Oxide Fuel Cell Cathode

    Tsuyoshi Nagasawa, Katsunori Hanamura

    The 5th International Education Forum on Environmental and Energy Science Proceedings  2016.12  ACEEES at Tokyo Institute of Technology

    　More details

    Event date： 2016.12

    Language：English  

    researchmap

  • Fabrication of Anode-supported Dense BaZr0.7Sn0.1Y0.2O3-δ Electrolyte Membrane by Dip-coating Process for Proton-conducting Solid Oxide Fuel Cell Application

    Merika CHANTHANUMATAPORN, Tsuyoshi NAGASAWA, Masaru KANIE, Katsunori HANAMURA

    The 5th International Education Forum on Environmental and Energy Science Proceedings  2016.12  ACEEES at Tokyo Institute of Technology

    　More details

    Event date： 2016.12

    Language：English  

    researchmap

  • ヘリウム衝突噴流によるSOFC燃料極内の化学種輸送クエンチング

    長澤 剛, 花村 克悟

    熱工学コンファレンス2016 CD-ROM  2016.10  一般社団法人 日本機械学会

    　More details

    Event date： 2016.10

    Language：Japanese  

    researchmap

  • A Proton-Conducting Solid Oxide Fuel Cell with an Yttrium and Tin Co-Doped Barium Zirconate Electrolyte

    Merika Chanthanumataporn, Tsuyoshi Nagasawa, Masaru Kanie, Katsunori Hanamura

    ISTP27 Proceedings  2016.9  ISTP27

    　More details

    Event date： 2016.9

    Language：English  

    researchmap

  • Thermodynamic and kinetic study of hydrogen oxidation at Ni/YSZ anode in SOFCs based on species territory adsorption model

    Tsuyoshi Nagasawa, Katsunori Hanamura

    2016Asian SOFC Symposium Program&Abstracts  2016.9  The SOFC Society of Japan

    　More details

    Event date： 2016.9

    Language：English  

    researchmap

  • Insights into Hydrogen Oxidation Process at Ni/YSZ anode in Solid Oxide Fuel Cells based on Species Territory Adsorption Model

    Tsuyoshi Nagasawa, Katsunori Hanamura

    Proceedings of The 4th UK Japan Engineering Education League Workshop  2016.8  The 4th UK Japan Engineering Education League Workshop

    　More details

    Event date： 2016.8

    Language：English  

    researchmap

  • An Intermediate Temperature Proton-Conducting Solid Oxide Fuel Cell with a High Performance Yttrium and Tin Co-Doped Barium Zirconate Electrolyte

    Merika Chanthanumataporn, Tsuyoshi Nagasawa, Masaru Kanie, Katsunori Hanamura

    2016.6 

    　More details

    Event date： 2016.6

    Language：English  

    researchmap

  • in-situラマン分光によるSZY添加SOFC燃料極の炭素析出抑制メカニズムの解析

    長澤剛, チェンドンチャン, ライサムスン, リウメイリン, 花村克悟

    第53回日本伝熱シンポジウム 講演論文集  2016.5 

    　More details

    Event date： 2016.5

    Language：Japanese  

    researchmap

  • Reduction of fitting parameters of species territory adsorption model for SOFC anode reaction based on thermodynamic consideration

    Tsuyoshi Nagasawa, Katsunori Hanamura

    10th Korea-China-Japan Student Symposium 2016 proceedings  2016.3  10th Korea-China-Japan Student Symposium 2016

    　More details

    Event date： 2016.3

    Language：English  

    researchmap

  • Thermodynamic Analysis of Reaction around Triple Phase Boundary in SOFC Anode using a Species Territory Adsorption Model

    Tsuyoshi Nagasawa, Katsunori Hanamura

    The 4th International Education Forum on Environment and Energy Science, Tokyo Institute of Technology proceedings  2015.12  Tokyo Institute of Technology

    　More details

    Event date： 2015.12

    Language：English  

    researchmap

  • Overpotential and Interfacial Conductivity of Ni/YSZ Anode Based on Species Territory Adsorption Model in SOFCs

    Tsuyoshi Nagasawa, Katsunori Hanamura

    ECS Transactions  2015.7  ECS

    　More details

    Event date： 2015.7

    Language：English  

    researchmap

  • Analysis of Anode Reaction in SOFC based on Chemical Species Territory Adsorption Model

    Tsuyoshi Nagasawa, Katsunori Hanamura

    2015.6 

    　More details

    Event date： 2015.6

    Language：Japanese  

    researchmap

  • Power generation characteristics of a solid oxide fuel cell anode incorporating a SrZr0.95Y0.05O3-δ proton conductor

    Tsuyoshi Nagasawa, Katsunori Hanamura

    9th Japan-Korea-China Student Symposium 2015 proceedings  2015.3  9th Japan-Korea-China Student Symposium 2015

    　More details

    Event date： 2015.3

    Language：English  

    researchmap

  • An analysis of Overpotential Curve by SOFC Anode Reaction Model based on Species Territory Adsorption around Triple Phase Boundary

    Tsuyoshi Nagasawa, Katsunori Hanamura

    2014.12  Tokyo Institue of Technology

    　More details

    Event date： 2014.12

    Language：English  

    researchmap

  • Reaction Characteristics around Trip Phase Boundary in Anode including Proton Conductor for Solid Oxide Fuel Cell

    Tsuyoshi Nagasawa, Katsunori Hanamura

    ECS Transactions  2014.10 

    　More details

    Event date： 2014.10

    Language：English  

    researchmap

  • Output PowerCharacteristics of SOFC with Anode incorporating Strontium Zirconium

    Tsuyoshi Nagasawa, Katsunori Hanamura

    2014.6 

    　More details

    Event date： 2014.6

    Language：Japanese  

    researchmap

  • SZYプロトン伝導体添加燃料極SOFCの発電特性

    長澤 剛, 花村 克悟

    第51回日本伝熱シンポジウム講演論文集CD-ROM  2014.5  公益社団法人 日本伝熱学会

    　More details

    Event date： 2014.5

    Language：Japanese  

    researchmap

  • Solid Oxide Fuel Cell using an Anode with Strontium Zirconium Yttrium Oxide

    Tsuyoshi Nagasawa, Katsunori Hanamura

    8th China-Korea- Japan Student Symposium 2014 proceedings  2014.3 

    　More details

    Event date： 2014.3

    Language：English  

    researchmap

  • Solid oxide fuel cell using an anode with Strontium Zirconium

    Tsuyoshi Nagasawa, Katsunori Hanamura

    2013.9 

    　More details

    Event date： 2013.9

    Language：Japanese  

    researchmap

▼display all

Awards

  • 注目発表

    2026.3   第137回触媒討論会  

    長澤 剛

    　More details

  • 日本機械学会動力エネルギーシステム部門 優秀講演表彰

    2023.11  

    長澤 剛

    　More details

  • Outstanding Presentation Award

    2023.5   Society of Automotive Engineers of Japan  

    Tsuyoshi Nagasawa

    　More details

  • JSME Medal for Outstanding Paper

    2022.4   The Japan Society of Mechanical Engineers   Thermal efficiency improvement of super-lean burn spark ignition engine by stratified water insulation on piston top surface

    Tsuyoshi Nagasawa, Yuichi Okura, Ryota Yamada, Susumu Sato, Hidenori Kosaka, Takeshi Yokomori, Norimasa Iida

    　More details

  • 令和3年度工学院若手奨励賞

    2021.10   東京工業大学  

    長澤 剛

    　More details

  • AUTSE Young Scientist Award

    2020   Asian Union of Thermal Science and Engineering  

    Tsuyoshi Nagasawa

    　More details

  • 平成30年度手島精一記念研究賞 博士論文賞

    2019.3   東京工業大学  

    長澤 剛

    　More details

  • 日本伝熱学会奨励賞

    2018.5   日本伝熱学会  

    長澤 剛

    　More details

  • Best Poster Award, 4th UK-Japan Engineering Education League Workshop

    2016.8   UK-Japan Engineering Education League  

    Tsuyoshi Nagasawa

    　More details

  • 優秀プレゼンテーション賞，第53回日本伝熱シンポジウム

    2016.5   日本伝熱学会  

    長澤 剛

    　More details

  • 武藤栄治賞優秀学生賞

    2013.3   日本設計工学会  

    長澤 剛

    　More details

▼display all

Research Projects

  • 高温反応界面における化学種ダイナミクス原子スケール計測の開拓

    Grant number：26K22640  2026.6 - 2028.3

    日本学術振興会  科学研究費助成事業  挑戦的研究(萌芽)

    長澤 剛

    　 More details

    Authorship：Principal investigator 

    Grant amount：\6500000 （ Direct Cost: \5000000 、 Indirect Cost：\1500000 ）

    researchmap

  • 燃焼合成による担持金属触媒マルチスケール構造の選択的制御

    Grant number：26K00887  2026.4 - 2030.3

    日本学術振興会  科学研究費助成事業  基盤研究(B)

    長澤 剛

    　 More details

    Grant amount：\18330000 （ Direct Cost: \14100000 、 Indirect Cost：\4230000 ）

    researchmap

  • 高温電極・触媒界面の定量化を実現する原子ラベル可視化解析基盤

    2026.4 - 2029.3

    東電記念財団  研究助成（基礎研究） 

    長澤 剛

    　 More details

    Authorship：Principal investigator 

    researchmap

  • 高解像同位体イメージングによる高温界面輸送反応場のモデリング

    2026.4 - 2028.3

    スズキ財団  科学技術研究助成（一般） 

    長澤 剛

    　 More details

    Authorship：Principal investigator 

    researchmap

  • 高効率エネルギー変換・環境浄化を実現する高機能触媒ナノ粒子の火炎合成法の構築

    2026.4 - 2027.3

    岩谷直治記念財団  岩谷科学技術研究助成 

    長澤 剛

    　 More details

    Authorship：Principal investigator 

    researchmap

  • 金属/酸化物界面における化学種分布サブナノスケール計測への挑戦

    2026.1 - 2027.3

    精密測定技術振興財団  精密測定技術振興のための調査・研究事業 

    長澤 剛

    　 More details

    Authorship：Principal investigator 

    researchmap

  • マルチスケールその場計測による低温スス酸化反応メカニズムの解明

    Grant number：25K07617  2025.4 - 2029.3

    日本学術振興会  科学研究費助成事業  基盤研究(C)

    中村 真季, 長澤 剛

    　 More details

    Grant amount：\4550000 （ Direct Cost: \3500000 、 Indirect Cost：\1050000 ）

    researchmap

  • 薄膜モデル触媒と同位体可視化を用いた高温反応界面の速度論解析補助事業

    2025.4 - 2026.3

    公益財団法人JKA 競輪とオートレースの補助事業（個別研究） 

    長澤 剛

    　 More details

    Authorship：Principal investigator 

    researchmap

  • 乗用車および重量車の合成燃料利用効率の向上とその背反事象の改善に関する技術開発

    2024.4 - 2028.3

    NEDOグリーンイノベーション基金事業 

    　 More details

  • 気相燃焼合成による担持金属触媒構造の制御と粒子生成機構解明

    2024.4 - 2026.3

    自動車用内燃機関技術研究組合(AICE) 萌芽的研究 

    長澤 剛

    　 More details

    Authorship：Principal investigator 

    researchmap

  • 燃焼場を用いた多様な複合微粒子デザイン基盤の構築補助事業

    2024.4 - 2025.3

    公益財団法人JKA 競輪とオートレースの補助事業（個別研究） 

    長澤 剛

    　 More details

    Authorship：Principal investigator 

    researchmap

  • パターン触媒・電極を用いた高解像同位体可視化に基づく局所速度論パラメータ計測

    2024.1 - 2025.3

    精密測定技術振興財団  精密測定技術振興のための調査・研究事業 

    長澤 剛

    　 More details

  • 超高解像計測を基盤とする気固界面輸送反応場の革新的モデリング技術創出補助事業

    2023.4 - 2024.3

    公益財団法人JKA  競輪とオートレースの補助事業（個別研究） 

    長澤 剛

    　 More details

    Authorship：Principal investigator 

    researchmap

  • 気相燃焼合成による高活性・高耐久な排ガス浄化触媒の創成

    2022.12 - 2024.3

    自動車用内燃機関技術研究組合(AICE)  萌芽的研究 

    長澤 剛

    　 More details

    Authorship：Principal investigator 

    researchmap

  • 気相燃焼合成による多孔質反応場エンジニアリング

    Grant number：22H01413  2022.4 - 2026.3

    日本学術振興会  科学研究費助成事業 基盤研究(B)  基盤研究(B)

    長澤 剛, 小酒 英範

    　 More details

    Grant amount：\17940000 （ Direct Cost: \13800000 、 Indirect Cost：\4140000 ）

    researchmap

  • Engineering of Porous Reaction Field by Gas-Phase Combustion Synthesis

    Grant number：23K22684  2022.4 - 2026.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    　 More details

    Grant amount：\17940000 （ Direct Cost: \13800000 、 Indirect Cost：\4140000 ）

    researchmap

  • 同位体ラベリング計測と逆解析に基づく高温電極・触媒内局所反応速度測定法の開発

    2022.4 - 2023.3

    精密測定技術振興財団  精密測定技術振興のための調査・研究事業 

    長澤 剛

    　 More details

    Authorship：Principal investigator 

    researchmap

  • 壁面熱流動・熱伝達複合計測に基づく超希薄燃焼ガソリンエンジンの層状水蒸気遮熱効果の解明

    2021.4 - 2022.3

    第5回テクノバ賞研究助成 

    長澤 剛

    　 More details

    Authorship：Principal investigator 

    researchmap

  • 燃焼合成によるナノ粒子三次元構造制御技術の確立と担持金属触媒への応用

    Grant number：20K14665  2020.4 - 2023.3

    日本学術振興会  科学研究費助成事業 若手研究  若手研究

    長澤 剛

    　 More details

    Grant amount：\4160000 （ Direct Cost: \3200000 、 Indirect Cost：\960000 ）

    自動車の排ガス浄化システムや燃料改質の触媒として広く使用される担持金属触媒においては，高温にて耐凝集性を有する構造の実現が望まれる．本研究では気相燃焼合成法を用い，白金/セリアをモデル系として様々な条件においてナノ粒子合成を実施し，粒子構造制御因子の解明と貴金属の凝集を抑制しつつ高い比表面積を有する最適な触媒構造の実現を目指す．
    前駆体溶液を超音波振動で霧化して拡散バーナ火炎中へと供給するタイプの燃焼合成装置を用い（火炎噴霧熱分解法），火炎温度および前駆体濃度が白金/セリアナノ粒子の構造に与える影響を調査した．火炎温度一定で前駆体濃度を変化させたところ，濃度の減少に伴ってセリアの粒径は減少する一方，白金の粒径は大きく影響を受けないことが明らかとなった．また高濃度の前駆体溶液を用いた場合，中空のセリア粒子が多く観察された．次に前駆体濃度一定で火炎温度を変化させたところ，高温条件においては10nm以下の細かい粒子が主に生成され，低温になるにつれて100nm程度の大きい粒子の生成が支配的になる傾向が見られた．これらに加え，低温においては多結晶構造を有するセリア粒子が多く確認され，また白金粒径は低温ほど小さくなることが明らかとなった．以上の結果をもとに，気相反応による粒子生成ルートと液滴からの生成ルートそれぞれにおける白金/セリアナノ粒子生成メカニズムの考察を行った．
    高比表面積，貴金属高分散性が要求される触媒粒子としては，一般に粒径は小さい方が有利となる．そこで上記の結果より微細な粒子が得られる高温火炎を用い，粒子捕集効率の向上および捕集時間の短縮のために流路を改良し，前駆体濃度を増加させた上で，白金/セリア粒子の合成を行った．得られた粒子のBET比表面積は112.4 m2/g，COパルス吸着法による白金比表面積は2.4 m2/g（白金分散度19.7%）であった．

    researchmap

  • Flame spray pyrolysis of stable composite nanoparticles with high surface area for metal supported catalysts

    Grant number：19K21068  2019.4 - 2020.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Research Activity Start-up  Grant-in-Aid for Research Activity Start-up

    Nagasawa Tsuyoshi

    　 More details

    Grant amount：\2990000 （ Direct Cost: \2300000 、 Indirect Cost：\690000 ）

    For automotive exhaust after-treatment catalyst, precious metal agglomeration and following deterioration of catalytic conversion efficiency is one of the big problems. In order to stabilize metal phase and prevent agglomeration, here we aim to fabricate composite nanoparticles consisting of precious metal and oxide phases by combustion synthesis method. For particle fabrication, combustion synthesis apparatus with coaxial flow diffusion flame burner with double tube structure was constructed. In CH4/O2 diffusion flame, chemical precursor solution atomized by ultrasonic vibrator is supplied with N2. By using the constructed equipment, Pt/CeO2 nanoparticles were synthesized. From a mixture solution of Ce and Pt precursors, 5wt%-Pt/CeO2 nanoparticles with CeO2 diameter of around 100 nm and Pt of around 10 nm were synthesized. In addition, 3D-structure observation of Pt/CeO2 particles by TEM tomography shows that Pt particles are embedded on CeO2 surface or included inside CeO2 particles.

    researchmap

  • 多角的光学計測による次世代超希薄燃焼ガソリンエンジン壁面近傍の熱流動現象及び成層水噴射効果の解明

    2019.4 - 2020.3

    マツダ財団  第35回マツダ研究助成 

    長澤 剛

    　 More details

    Authorship：Principal investigator 

    researchmap

  • 噴霧燃焼合成による固体酸化物型燃料電池電極の一括成膜技術の開発

    2018.4 - 2019.3

    平成30年度日新製糖奨学育英基金 

    長澤 剛

    　 More details

    Authorship：Principal investigator 

    researchmap

  • 同位体クエンチ可視化による固体酸化物型燃料電池電極内の電流密度・過電圧分布定量化

    2018.4 - 2019.3

    服部報公会  平成30年度工学研究奨励援助金 

    長澤 剛

    　 More details

    Authorship：Principal investigator 

    researchmap

  • 原子ラベリング・ＦＩＢ－ＳＥＭ融合によるＳＯＦＣ燃料極の３次元イオン分布計測

    Grant number：16J03479  2016.4 - 2018.3

    日本学術振興会  科学研究費助成事業 特別研究員奨励費  特別研究員奨励費

    長澤 剛

    　 More details

    Grant amount：\2300000 （ Direct Cost: \2300000 ）

    本研究は固体酸化物型燃料電池（SOFC）の多孔質電極内反応場分布を，反応のクエンチと同位体ラベリングを用いて明らかにしようとするものである．昨年度までに，ヘリウムガスの衝突噴流によるSOFCのクエンチと酸素同位体ラベリングにより，空気極の反応場分布を電極微構造スケールで取得することに成功している．このため本年度は，同手法を用いてLSM（ランタンストロンチウムマンガナイト）/YSZ（イットリア安定化ジルコニア）空気極内部の反応場をより詳細かつ定量的に調べた．
    酸化物イオンの拡散が速い電解質（YSZ）部分における同位体酸素分布を得るために，発電温度を800℃から700℃へと下げて実験を行った．同位体酸素を用いて700℃において発電を行い，その後ヘリウムガスの衝突噴流によってSOFCを１秒程度でクエンチした．クエンチ後の電解質/空気極界面における断面内同位体酸素分布を高空間分解能の二次イオン質量分析計にて計測した．その結果，空気極/電解質界面近傍でのみLSM粒子内部への同位体酸素拡散が見られたことから，この界面近傍で酸素の化学ポテンシャルが大きく低下していること，すなわち過電圧が増加していることが明らかとなった．また可視化結果から得られたYSZ電解質部分の同位体酸素プロファイルを半無限固体の１次元拡散方程式にて解析し，そこから電解質/空気極界面における酸化物イオンフラックスを定量的に見積もった．その結果，空気極から流れ込む酸化物イオンフラックスのうちの２～３割が電解質/空気極界面から，残りの７～８割が多孔質空気極部分から流入していることが明らかとなった．

    researchmap

▼display all