Injector Sizing: REALLY dumb question

Tom Sharpe twsharpe at mtco.com
Thu Aug 27 04:03:23 GMT 1998


Vaporized and mixed are two different characteristics!!! TWS

Tony Bryant wrote:

> >       My question is, independent of these considerations, what is the
> > effect of duty cycle?  If during light cruising, the injector is only
> > delivering fuel during, let's say, 20% of the intake valve's opening
> > time, you have this packet of incredibly rich A/F mixture rushing
> > into the cylinder followed by a big gulp of air that has basically no
> > fuel in it at all.  Is mixing inside the cylinder turbulent enough to
> > ensure an even distribution by the time of ignition or is the charge
> > still stratified?
> >
>
> One school of thought says that with small amounts of fuel, it will
> pretty much all vapourize, because its been squirted onto the hot
> intake valve. Obvisouly injector timing will make a big difference to
> this effect.
>






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