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Ben Wilson
Forums Junkie


Location:
Canberra
Registered:
May 2002
Re: Can anyone explain to me........ Wed, 26 October 2005 03:27 Go to previous message
Bear in mind that every engine is always trying to run flat out. It's only by throttling the airflow that we control them.

At low load (closed throttle), the engine is straining to pull air past the closed throttle, therefore, there is low pressure in the plenum.

When the throttle opens, a lot more air is allowed into the plenum, so the pressure rises.

At full throttle, there is minimal restriction to airflow, so the pressure is the same as atmospheric.
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SubjectPosterDate
Read Message   Can anyone explain to me........ exodus191Wed, 26 October 2005 00:15
Read Message   Re: Can anyone explain to me........ ke382TGWed, 26 October 2005 00:30
Read Message   Re: Can anyone explain to me........ illuminatusWed, 26 October 2005 00:54
Read Message   Re: Can anyone explain to me........  Ben WilsonWed, 26 October 2005 03:27
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