Tag: waste heat

By on March 4, 2014

2014 Porsche Motorsport- Porsche 919 Hybrid- Angle

The problem with battery electric and fuel cell cars is gasoline. Petrol is genuinely a superior fuel, at least in terms of energy. It has so much energy per gallon, 116,000 btu/gal, that we can use it in an engine whose theoretical maximum efficiency is only 37%. That means that with all the gizmos a modern gasoline powered internal combustion engine has that increase fuel economy, still two thirds or more of the energy in the fuel is being turned into unusable heat, not motive force.

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