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post #1 of 3 (permalink) Old 02-14-2006, 11:03 PM Thread Starter
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Engine Questions

In my tractor power lab, working on a lab report. I need some good words to use here, I'm hoping you's all have some.

Why is there more friction created the faster the engine speed?

and

This is a 4 cyl diesel engine with a turbo. We ran it once on the dyno with all 4 firing and then pulled one injector and dyno'd it with only 3 firing. I have a plot with air consumption vs rpm. the 3 cylinder run consumes less air than the 4. Why?

Thanks guys!
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post #2 of 3 (permalink) Old 02-14-2006, 11:08 PM
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Quote:
Originally Posted by whitecoug
Why is there more friction created the faster the engine speed?
F=MA

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post #3 of 3 (permalink) Old 02-15-2006, 12:31 AM
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Quote:
Originally Posted by whitecoug
We ran it once on the dyno with all 4 firing and then pulled one injector and dyno'd it with only 3 firing. I have a plot with air consumption vs rpm. the 3 cylinder run consumes less air than the 4. Why?
Volumetric Efficiency

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