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post #25 of (permalink) Old 10th July 2008
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[QUOTE=VelSatisfied;379526]But only once the intake air has passed the vanes of the turbo - surely? [QUOTE]

True. On the inlet side of the compressor it's sooking - just as the piston does on a N/A engine in the cylinder on it's induction stroke, but on the discharge side the air is compressed.
As explained in the link, the only sections of the inlet system that are under positive pressure are after the turbo ....... pipework to the intercooler, intercooler, pipework to the inlet mainfold. So, when the inlet valve opens, there is positive pressure in the manifold waiting to rush into the cylinder. The piston does no real work in drawing in the charge of air.

A wee bit more bumph HERE courtesy of Wikipedia.

On a wee side note Paul, I always thought of the Otto cycle as being like a good night out with the girlfriend - suck, squeeze, bang , bl .......


I think I have CDO. It's like OCD, but with ALL THE LETTERS IN THE RIGHT ORDER
Currently in Gonescenile's garage:
A wee French toy & a 2010 Honda VFR 800

Last edited by Gonescenile; 10th July 2008 at 10:55 AM.
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