Injector Sizing: REALLY dumb question

[Tony Bryant]

> 	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.