Injector Sizing: REALLY dumb question

Gary Derian gderian at cybergate.net
Wed Aug 26 20:17:41 GMT 1998


At light throttle, a hot blast of exhaust shoots up the intake port when the
valve opens.  This should effectively vaporize any fuel.  TBI or carbs may
cold start better because there is more time to vaporize cold fuel in the
intake manifold.
Gary Derian <gderian at cybergate.net>

-----Original Message-----
From: Mike Turner <MikeTurner at kemet.com>


>>>TBI's have about three days time to think about vaporizing enough
>>>to burn (since the fuel has the extra length of the runners to think
>about
>>>vaporizing).
>>>
>
>Is this is a problem at idle or off-idle? If so, then why not at mid and
>WOT, too? I don't want to revisit the debate of where fuel vaporizes
>(cylinder, valve, runner, any combination of the above), but all of that
>discussion would indicate low throttle settings should have good fuel
>vaporization. (The whine of servos as my CSH raises for furious head
>scratching, unintentionally exposing....Did Darth Vader start out with a
>CSH? Exactly what ARE the long term effects of wearing a CSH?)





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