crushers
post ho
anyone know max air flow?
will 450 cfm air filter be enough?
will 450 cfm air filter be enough?
cfm air flow HDT
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Should be easy enough to calculate, but will need to know what boost and rpm range you consider to be the maximum.
You would use the ideal gas law to come up with an approximation, factoring in RPM & displacement and also an efficiency factor. You could also look at what happens to the volume of a litre of air at, say, 1 atm (~14 PSI) and then use the displacement and RPM of the engine...
~John
You would use the ideal gas law to come up with an approximation, factoring in RPM & displacement and also an efficiency factor. You could also look at what happens to the volume of a litre of air at, say, 1 atm (~14 PSI) and then use the displacement and RPM of the engine...
~John
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At 4,000 RPM, and 1 atm of boost (~14 PSI ie: 2x atmospheric) given a 4.2L engine and 100% efficiency, you'd be looking at 16,800 L/min or about 593 cu ft / min.
~John
~John
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I looked at the other notes in the diesel section and the link to the Nissan forum. I would not use a 60% efficiency for my calculations at all - boosted engines don't work with that kind of math.
On the intake side I would go bigger than 600 CFM flow capability and on the pressure side, things become less relevant as to size due to the force-feeding - too large will cause problems with flow, as will too small (response time, friction within the system etc.).
I am sure that someone who knows a lot more about flow dynamics will get into an argument about laminar flow and all that stuff, but I will stick with my numbers.
~John
On the intake side I would go bigger than 600 CFM flow capability and on the pressure side, things become less relevant as to size due to the force-feeding - too large will cause problems with flow, as will too small (response time, friction within the system etc.).
I am sure that someone who knows a lot more about flow dynamics will get into an argument about laminar flow and all that stuff, but I will stick with my numbers.
~John
