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Mike Gehl Mike Gehl is offline
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Join Date: Feb 2001
Location: Vail, CO
Posts: 533
Two different measurements of efficiency - the 30-40% numbers represents mechanical effort extracted vs. the ultimate energy content of the fuel, and the 70-80% numbers represent work extracted vs. what is theoretically possible at a given set of operating conditions. large turbocompounded ship's engines frequently exceed 90% of theoretical, and usually exceed that which is achieved in power plants, allthough at greatly increased complexity.

My concerns with this engine would revolve around sealing and cooling - where the other 60-70% goes! I'd guess at the claimed 3k hp, that core would glow like a light bulb and quickly seize. If they could solve these problems we'd have a compact little engine that achieves pretty normal fuel efficiency.

My favorite car project is this one:

Nothing like light weight, good aero and low power!

Old 07-02-2007, 10:12 AM
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