Injector Sizing: REALLY dumb question

[Zack]

OK, another really dumb injector question.  Granted that when the 
injector on time gets short, total fuel delivered in the pulse will 
become more variable as the natural variability of open/close time 
has more and more effect.
	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?

Z 



> The root of the thing is that 
> minimum injector-on time for most injectors is somewhere between .001
> and .002 second - Less gives erratic fuel delivery.