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Old 07-10-2010, 08:42 AM   #158 (permalink)
bwilson4web
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Quote:
Originally Posted by cfg83 View Post
. . .
Is this the way it's supposed to be? Are there units for this?
. . .
"Efficiency" is the ratio of mechanical energy output divided by the chemical energy input. At best, it can approach 100% but heat engine efficiency is limited by the ratio of peak and exhaust temperatures. The Wiki article about heat engines would be a good introduction.

Bob Wilson
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2019 Tesla Model 3 Std. Range Plus - 215 mi EV
2017 BMW i3-REx - 106 mi EV, 88 mi mid-grade
Retired engineer, Huntsville, AL
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