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Old 02-24-2012, 02:34 PM   #17 (permalink)
Olympiadis
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Join Date: May 2010
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Quote:
Originally Posted by drmiller100 View Post
I use the terms pumping losses and throttling losses interchangably.

what is the difference?
Given the same throttle position, you can increase spark timing or fuel burn-speed and increase pumping losses independent of the throttle.
Scavenging and reversion also come into play in a running engine.
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