Toyota Developed A Liquid Hydrogen Combustion Engine!

Summary by Krater

This video examines the engineering and racing challenges of liquid hydrogen combustion engines, focusing on Toyota's development and testing in the GR Corolla at the Fuji 24-hour race.

From the video

Answers: Can Toyota's liquid hydrogen combustion engine save the internal combustion engine?

• liquid hydrogen combustion engines
• hydrogen fuel pump challenges
• hydrogen tank energy density and space requirements
• cryogenic hydrogen temperature management and boil-off
• synthetic fuel as an alternative to hydrogen

What it concludes

• Liquid hydrogen stores approximately 75% more fuel in the same space compared to gaseous hydrogen at 700 bar.
• Liquid hydrogen must be kept at -253 degrees Celsius to prevent boil-off.
• The fuel pump is the most challenging aspect of liquid hydrogen technology due to extreme cold causing shrinkage and difficult sealing without lubrication.
• Liquid hydrogen provides more flexibility in tank shape than high-pressure gaseous tanks, though awkward shapes increase surface area and boil-off.
• A liquid hydrogen F1 car would require an impractically large tank of about 560 to 700 liters.
• Synthetic fuel solves hydrogen storage and pump problems with the only drawback being higher fuel cost.