Re:Porsche 919 – Racecar Engineering
by aunty_helen on Sunday September 27, 2015 @06:18PM
(#10288136)
Conversion of linear motion to rotational motion is the loss you're looking for.
To your point about effectively gas turbine/electric drive trains from your OP, the problem is efficency in burning the fuel. This comes from the lack of achievable compression ratio in a turbine system. 6:1 is good for a jet, 13:1 is good for a N/A piston engine (not sure what race engines run exactly).
Higher compression ratio = better fuel efficency.
To your point about effectively gas turbine/electric drive trains from your OP, the problem is efficency in burning the fuel. This comes from the lack of achievable compression ratio in a turbine system. 6:1 is good for a jet, 13:1 is good for a N/A piston engine (not sure what race engines run exactly). Higher compression ratio = better fuel efficency.