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Old 05-08-2009, 01:09 PM   #54 (permalink)
binarycortex
LurkoModding Ecker
 
Join Date: Sep 2008
Location: Da Desert
Posts: 51

new beetle - '98 Volkswagen Beetle GLS
90 day: 32.98 mpg (US)
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Quote:
Originally Posted by Christ View Post
Still, that Zonda has a 7.3 liter V12... you know from science that if at any point, it is working with 100% VE, it is consuming and exhausting 7.3 liters per revolution..

Speculation from here on:
IF that engine works with 100% VE at (speculatively) 2000 RPM, it is then using/exhausting a total of 7.3L*2000=14,600L of air per minute. (Damn, that's alot of air!) For a total of 515.6 CFM exiting the tailpipe of that car.
An engine actually does half its volume per revolution so you need to divide your findings by 2.

Think about a single cylinder 4 stroke engine. 1/2 rotation for intake, 1/2 rotation for compression (nothing leaves), 1/2 rotation for combustion, 1/2 rotation for exhaust. If you add those up its 2 full rotations.
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