Re: How does a Diesel become 50% fuel efficient?

Posted by Jerry/MT on February 10, 2006 at 14:22:36 from (67.72.98.45):

In Reply to: How does a Diesel become 50% fuel efficient? posted by DanDHA on February 10, 2006 at 10:04:25:

I don't think they are 50% thermally efficient, but they are about 10-12% more efficient than a spark ignition engine. It's mainly due to the higher compression ratio and the higher cycle temperature. I suppose if you have an application where they run at constant power continuously(like a diesel generator at constant load) you can design them for maximum thermal efficiency and get them a bit better but I'm not certain that 50% is the right number.

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