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Thermal Energy Conversion Lab
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A lab that aims to make engines cleaner and more efficient with hydrogen and other new fuels.
AboutAbout the lab
Using combustion technology to reach carbon neutrality.
The Thermal Energy Conversion Lab does research together with the Energy Conversion Systems group as the Combustion and Power Engineering Lab.
Heat engines are widely used in automobiles, ships, construction machinery, power generation, aircraft, and spacecraft.
Toward a carbon-neutral society, the lab studies higher efficiency and zero emissions for heat engines and power systems, and the use of new fuels such as hydrogen and synthetic fuels.
It also works on understanding and controlling the physical and chemical processes of heat and flow that underlie this research.
Key terms
- Heat engine
- A machine that converts the heat obtained by burning fuel into power. Engines and gas turbines are examples
- Synthetic fuel
- A fuel made from carbon dioxide and hydrogen, among other sources
- Spray
- Liquid fuel blown out as fine droplets
NewsLab news
Two presentations at the Thermal Engineering Conference received the Outstanding Young Presenter Award of the Thermal Engineering Division of the Japan Society of Mechanical Engineers
A doctoral student received the Young Scientist Award at TILA-LIC 2026
The Mitsubishi Heavy Industries endowed chair on innovative combustion dynamics, in which the lab collaborates, is established
ResearchResearch themes
The lab aims for higher efficiency and zero emissions in heat engines and power systems, and for the use of new fuels. It investigates combustion and heat flow through engine experiments, laser-based imaging measurements, and numerical simulation.
*Illustrative imageRunning heat engines on hydrogen and synthetic fuels
The lab studies how to raise thermal efficiency and clean up exhaust in heat engines that use new fuels such as hydrogen and synthetic fuels. It works on improving combustion in diesel, natural gas, and biogas engines.
*Illustrative imageHow fuel sprays burn
The lab seeks to explain how fuel sprays and jets ignite and burn. It analyzes spray combustion using devices such as a rapid compression expansion machine, and also simulates combustion inside engines and in sprays.
*Illustrative imageHow fuel and air mix inside a flame
The lab investigates how turbulence mixes fuel and air in free jet flames and spray flames. It is also developing laser methods for imaging flow velocity, temperature, concentration, and other quantities.
*Illustrative imageHeat transfer to combustion chamber walls
The lab seeks to explain how heat is transferred from the flame to the wall inside an engine combustion chamber. It also conducts research using laser-induced phosphorescence on the process in which a flame hits a wall.
MembersFaculty
The Combustion and Power Engineering Lab consists of faculty from the Thermal Energy Conversion group and the Energy Conversion Systems group.
- ProfessorJun Hayashi
- Assistant ProfessorTakuya Tomidokoro
VoicesStudent voices
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Kawasaki Hydrogen Engine Vehicle and Engine 001” SF-R / CC BY-SA 4.0 (cropped)
- Running heat engines on hydrogen and synthetic fuels: “Hydrogen engine, Agritechnica 2023, Hanover (P1160140)” MB-one / CC BY-SA 4.0 (cropped)
- How fuel sprays burn: “ActBlue Urea (AdBlue) and Gasoline Injector from ActBlue Co. Ltd” ActBlue Co. Ltd. and ActBlue Europe S.à r.l. / CC BY 4.0 (cropped)
- How fuel and air mix inside a flame: “Gas oven flame 2” Billjones94 / CC BY-SA 4.0 (cropped)
- Heat transfer to combustion chamber walls: “Combustion P” Zbigniew Tomek / CC BY 4.0 (cropped)
- Related lab (Conversion Systems Lab): “Magneto ignition with low-tension magnetic spark plugs (Rankin Kennedy, Electrical Installations, Vol II, 1909)” Andy Dingley (scanner) / Public domain (cropped)
- Related lab (Materials Information Engineering Lab): “Statistical Ensembles (Estonian)” Nzjacobmartin / CC BY-SA 4.0 (cropped)
- Related lab (Quantum Energy Processes Lab): “Quantum dots 2” Marc Vidal / CC BY-SA 4.0 (cropped)
- Related lab (Mechanical Systems Creation Lab): “Human-Robot-Collaboration-Sawing-2016-Luka-Peternel” Luka Peternel / CC BY-SA 4.0 (cropped)
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