MC: I said *at the wheels*. I don't have the exact numbers at hand, but
there are a lot of losses between the engine crankshaft and the wheels. One
is the power necessary for the hydraulic system.
Good point. The NREL "Hydrogen Program Plan" cites a JPL study from 1985 showing that with conventional automobiles, 85% of Rotary Power is delivered to Vehicle Propulsion. By 2020 they hope to raise this to 90%.
I should upload images of these NREL diagrams for automobiles and electric power. They are very handy. I will look around on the web to see if I can find a copy.
- Jed
