okay, perhaps someone can tell me where I've gone wrong, but on site 1 from 454's post, the author claims
Quote:
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We have an engine here that has 2.5 times the power of a metal engine of the same size using 1/4 of the fuel. It never uses oil or water and will run almost forever without servicing
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If that were true, then wouldn't the engine be 10 times as efficient? Or are they talking about the fuel consumption and power output at different operating points (one at peak power, the other at peak econ)?
10 times as efficient = not thermally possible, unless they're comparing their engine to a ridiculously poor conventional engine
Even if their engine was 100% efficient (100% of the energy in the fuel was converted to mechanical power), they'd be only 2.5 times as efficient as the best IC engines out there. What's more, they'd have to have exhaust that came out at the same temperature as the incoming air, without letting it cool anywhere along the way - something I have a REALLY hard time believing.