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Re: Car Running Too Cold?

Subject: Re: Car Running Too Cold?
by lamb_daiquiri on 2011/5/23 12:49:53

Ultimately cold air is more dense and more will go in. The trade off is cold fuel hitting a cold port wall will coagulate and pool. Air and fuel need to be mixed to burn. High RPM and high flow velocities will pick it up again as fast air is lower pressure and helps revapourise the fuel as the partial pressure it experiences is lower and the turbulence will help pick it up from the wall.

Carbs with cold walled manifolds also have poor transient response. A good thing to read to understand this is reading about X-tau acceleration enritchment on the megasquirt website.