total volume of air in 6g72T

[bigger dreamer]

Hey guys I am having trouble finding the total liters of air and idk the formula to find out how much air really gets put in our engine. i would perfer if someone can tell me a formula. sorry if this sounds like a ridiculous request

thanks
sean

[J. Fast]

Good question. Lots of blanks to fill before you get an answer though. Are you looking for the estimated engine airflow calculation by itself or the combined turbo and engine formula based on compression ratio and PR of variable turbo's? Are you looking for a volumetric efficiency calculation, actual cfm, or...?

[bigger dreamer]

Good question. Lots of blanks to fill before you get an answer though. Are you looking for the estimated engine airflow calculation by itself or the combined turbo and engine formula based on compression ratio and PR of variable turbo's? Are you looking for a volumetric efficiency calculation, actual cfm, or...?

and i am looking for the combined answer

thanks

sean

[green-lantern]

I'm sure that could vary a good bit on a turbo engine. You are asking about a turbo 8:1 engine?

[Hans@GZP]

3 liters

[bigger dreamer]

3 liters

lol saw that one coming. i had to leave quickly after posting this. I am looking for a formula for the 8:1 with 12psi.

[AdamVR4]

Sure, I'll be the useful one.

lol saw that one coming. i had to leave quickly after posting this. I am looking for a formula for the 8:1 with 12psi.

2.972 L
7000 rpm
85% volumetric efficiency
12 psig (26.7 psia)

I get an air flow of 568 CFM

How did I get there?

[ displacement (181.6 cubic inch) x engine speed (7000 rpm) x 0.5 x volumetric efficiency x Pressure Ratio ((12 psi + 14.7) / 14.7) ] / 1728

Or -

Air flow rate = CID x RPM x 0.5 x VE x PR / 1728

The 0.5 comes from the the fact that a 4-stroke engine fills each cylinder every other revolution

1728 converts cubic inches to cubic feet

Source: Maximum Boost; If you have any other questions, look "inside" the book @ Amazon

[ChargerX3]

3 liters

The all inclusive answer.

[futurevr4man]

42

you're welcome.

[IPD]

"what time is the 5 O'clock parade?"