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Re: Two cycle gasoline engines


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Posted by Jerry/MT on February 21, 2006 at 20:36:23 from (67.72.98.45):

In Reply to: Two cycle gasoline engines posted by clyde in oregon on February 21, 2006 at 19:17:05:

I don't know if they experimented with them but for the technology available in the 40's and early 50's they were just not efficient. You loose some fuel/air mix on the compression until you pass the exhaust port. The two stroke diesels avoided that problem by only loosing air in the scavenge part of the cycle since they were fuel injected. The air lost in the scavenge cycle was lost HP but it was a small number and there was no fuel loss. Evinrude (sp?) claims that their two stroke marine gas engines don't have that scavenge loss and are cleaner then equivalent four strokes, that so maybe the have technology available today to get better efficiency especially the fuel injection systems. The diesel cycle with high compression ratios and attendent higher temperature give better thermal efficency which means better fuel economy. I doubt that a gasoline engine will beat that in a tractor application.
Hope this answered your question.


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