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Originally Posted by Old Mechanic
IC engines are approaching 60% now without power generation from exhaust heat.
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I'd like to see evidence of that, especially in the sizes & duty cycles used in a car.
And I have to ask again, if they're so efficient, why aren't they used as the first stage of combined-cycle generation plants, etc?
Quote:
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The Chrysler turbine cars of the early 60s were good for about 12 MPG.
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What were similar-sized IC-engined cars getting back then, though?
Also, you had the problem (same as with IC engines) of not being able to run at optimum efficiencies most of the time, 'cause you had to connect the turbine shaft to a transmission. With a setup like this Jaguar, you either run at optimum or not at all, which is a big win for average efficiency.