Forum: General Efficiency Discussion
01-23-2012, 10:23 AM
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Replies: 120
Views: 19,836
For example: Suppose the car is in town,...
For example: Suppose the car is in town, cruising at 30 mph. The HP used will depend on a lot of factors (parasitic loads, AC on-off, relative effects of rolling resistance vs aero, etc) but an OK...
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Forum: General Efficiency Discussion
01-23-2012, 09:41 AM
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Replies: 120
Views: 19,836
Hello drmiller100,
Well I don't know what make...
Hello drmiller100,
Well I don't know what make any give design choice better and under which conditions - more swirl, hemi head, indexed spark plugs etc. - but in so far as which engine gets better...
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Forum: General Efficiency Discussion
01-23-2012, 09:15 AM
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Replies: 120
Views: 19,836
Along the lines of what Ken Fry posted. The...
Along the lines of what Ken Fry posted. The University of Maryland had a dyno setup. They were testing a GM Iron Duke 4 cylinder push rod engine, old tech.
At 1200 RPM (may have been slightly...
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Forum: General Efficiency Discussion
01-23-2012, 01:29 AM
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Replies: 120
Views: 19,836
Ordinarily, the efficiency quoted for a given...
Ordinarily, the efficiency quoted for a given engine is based on energy out / energy in (which is derived from BSFC). Miles per gallon is usually not used as a measure of engine efficiency because...
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