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Conversion Systems Lab
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The lab uses optics and measurement to uncover the moment ignition occurs and how flames stay stabilized.
AboutAbout the lab
Changing engines by understanding how fire ignites.
The Conversion Systems Lab jointly runs the Combustion and Power Engineering Lab with the Thermal Energy Conversion field (Hayashi Lab).
Applications for the graduate school entrance exam (choice of desired division) are made separately from the Hayashi Lab.
Across the whole lab, research covers higher efficiency and zero emissions for heat engines and power systems, and the use of new fuels such as hydrogen and synthetic fuels.
Prof. Kawanabe's group investigates fundamental combustion phenomena such as ignition and flame stabilization, using optical measurements and a rapid compression expansion machine.
Key terms
- Rapid compression expansion machine
- An experimental apparatus that compresses and expands gas in an instant, as inside an engine, so that combustion can be observed one event at a time.
- Plasma
- A state in which the atoms and molecules of a gas separate into electrons and ions, with electrically charged particles moving around freely.
- Heating value
- The amount of heat released when a fuel is burned.
ResearchResearch themes
The Combustion and Power Engineering Lab works on higher efficiency for heat engines and the use of new fuels. Prof. Kawanabe's group studies ignition, flame stabilization, hydrogen combustion, and more, using optical measurements and purpose-built experimental equipment.
*Illustrative imageAssisting ignition with plasma
The lab repeatedly applies short nanosecond pulse discharges to ignite methane-air mixtures, and studies how the discharge affects the growth of the flame kernel.
*Illustrative imageStabilizing flames of hard-to-burn fuels
The lab examines in detail, location by location, how flames of low-heating-value fuels attach to and stabilize at the burner rim, while varying the thickness of the rim.
*Illustrative imageVisualizing hydrogen combustion with experimental equipment
Using a rapid compression expansion machine, the lab visualizes the process by which a hydrogen-air mixture ignites prematurely. It also works on modeling hydrogen and methane combustion in a device with a pre-chamber.
MembersFaculty
The Combustion and Power Engineering Lab consists of faculty members from the Thermal Energy Conversion and Conversion Systems fields.
- ProfessorHiroshi Kawanabe
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: “Magneto ignition with low-tension magnetic spark plugs (Rankin Kennedy, Electrical Installations, Vol II, 1909)” Andy Dingley (scanner) / Public domain (cropped)
- Assisting ignition with plasma: “Spark plug” 作者不詳 / Public domain (cropped)
- Stabilizing flames of hard-to-burn fuels: “U.S. Department of Energy - Science - )” U.S. Department of Energy from United States / Public domain (cropped)
- Visualizing hydrogen combustion with experimental equipment: “Copper flame test” Chemicalinterest / Public domain (cropped)
- Related lab (Thermal Energy Conversion Lab): “Kawasaki Hydrogen Engine Vehicle and Engine 001” SF-R / CC BY-SA 4.0 (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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