Faculty Members


(Professor/Division of Environmental Studies)

Department of Human and Engineered Environmental Studies/Automobile powertrain and distributed energy system

Career Summary

1997: Graduated from Faculty of Science and Technology (Keio University)
2003: Received engineering doctorate from Keio University
2003: Researcher (The University of Tokyo)
2004: Assistant Professor, Department of Mechanical Engineering, School of Engineering, (The University of Tokyo)
2007: Lecturer, Department of Mechanical Engineering, School of Engineering, (The University of Tokyo)
2011-12: Visiting researcher (Technical University of Munich, Germany)
2014: Associate Professor, Department of Mechanical Engineering, School of Engineering, (The University of Tokyo)
2022: Professor, Department of Human and Engineered Environmental Studies (The University of Tokyo)

Educational Activities

Graduate school:

Research Activities

Study on burning velocity of pre-mixtures (1997-1999)

Auto-ignition and combustion mechanism of pre-mixture (1999-2003)
- Analysis of detailed chemical reaction process
- Analysis of HCCI(Homogeneous Charge Compression Ignition) combustion by optical access engine

Study on engine with fuels generated from biomass resources (2003-)
- Combustion chracteristics of low-carolific value fuels
- Engine control system for fuel composition changing
- Diesel engine fueled by pylolysis gas of biomass resouces

Small size distributed energy system (2003-)
- Feasibility study of availbilty of gas engine to supuress fluctuation of natural energy generation
- Development of optimization tool of distributed energy system considering economy, enviroment and resilience
- Optimization and control of automobile and energy sytem for carbon neutrality (Fig.1)

Model based engine control and AI application (2011-)
- Development of control oriented engine combustion model (References 1,2) (Fig.1)
- Combustion control referece design method for transient operation
- Elucidation of cycle fluctuation mechanism by machine Learning
- Improvement of prediction accuracy of ignition model by machine Learning

Driver model for powertrain control (2019-)
・Development of a driver model considering surrounding conditions (Fig.2)

CO2emission mechanism in real driving conditions (2021-)
・Investigation of CO2emission mechanism of HEV

yamasaki_1_US.jpg Fig.1 Model beased control of advanced combustion

yamasaki_2_US.jpg Fig.2 Human in the loop engine test bench


1) Yudai YAMASAKI, Ryosuke IKEMURA, Fumiya SHIMIZU, Shigehiko KANEKO,"Simple combustion model for a diesel engine with multiple fuel injections", International Journal of Engine Research, First Published November 22, 2017, Volume: 20 issue: 2, page(s): 167-180, February 1, 2019, DOI: 10.1177/1468087417742764
2) Takuya Hayashi,Yudai Yamasaki,Shigehiko Kaneko,Takayuki Hikita,Saori Mizuno,Takuma Fujii,“Contro lSimulation of an HCCI engine with a discrete model", Transactions of the JSME, Vol.84, 2018 No.860, p.17-00325 (https://doi.org/10.1299/transjsme.17-00325) (in Japanese)
3) Shunki Nishii, Yudai Yamasaki, “Study on Automatic Adaptation for Control-oriented Model of Advanced Diesel Engine”, Journal of Engineering for Gas Turbines and Power, ASME, Journal of Engineering for Gas Turbines and Power. Paper No: GTP-21-1182, October 12, 2021, https://doi.org/10.1115/1.4052263

Other Activities

The Japan Society of Mechanical Engineers (JSME)
Society of Automotive Engineers of Japan (JSAE)
The Society of Instrument and Control Engineers (SICE)
Combustion Society of Japan
The Japan Institute of Energy

Future Plan

Our laboratory intends to conduct research on automotive power sources and energy systems to contribute to the realization of a carbon-neutral and prosperous society by improving efficiency, optimization, and coordination, while also taking into account the convenience of people.

yamasaki_3_US.jpg Fig.3 Control and optimization of a combined system of vehicles and energy systems

Messages to Students

We hope that by conducting research, we can satisfy people's intellectual curiosity and create human resources that will benefit society.