2 Stroke - 40% efficiency ICE - 100mpg
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That video says a lot more about the engine than the web page did. Thanks for posting it; sounds pretty neat if they can make it reliable!
I wonder what the thermo efficiency of a turbo-diesel is, anyway? Or for a two-stroke turbo-diesel? -soD |
Say what? 40% BTE will get them about 55mpg combined in something like a Prius, assuming they keep the engine in the same range of loads/speeds. 100mpg would require something about half the weight/CdA.
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It appears that this idea keeps showing up in the media, but never in vehicles...
New 2-stroke Diesel engine, cool link to Engineering TV Opposed-piston opposed-cylinder engine claims 50% FE increase |
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I'm pretty psyched about the horizontally opposed engine, although I'm not too happy that they're diesel only, I suppose it could be adapted to alcohol if that ever takes off. |
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Seeing that the military has first dibs, it will probably be quite some time before it is released to the general public, if ever. The prospects of a small and efficent high horse power engine like this is still intriging to say the least. > |
Get back to us when you find a way to make a two-stroker pass the EPA HC emission standards.
Why do you supposed the two stroke engine disappeared from the road in the first place? |
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Bourke Engine |
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Two stroke, direct injection, uses a supercharger for scavenging rather than bottom of the piston, no need to mix oil and fuel.
You just described a 6-71 Detroit Diesel. Same thing with opposed pistons is a Fairbanks-Morse diesel. Detroits had a high power-to-weight ratio as diesels go. F-Ms will run on anything remotely oily. Neither was particularly clean. |
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