batched injection

[Jens Knickmeyer]

<Graydon D. Stuckey> wrote:
> 
> On 12 Jul 1995, Jeffrey Giberstein wrote:
> 
> > Page 23 of Hartman's "Fuel Injection" states that if you batch fuel injection,
> > you might as well take your timing off the spark coil because injection event
> > timing is irrelevant.  Is this really true?  Wouldn't it be of benefit to
> > performance if I took my injection timing from the crank sensor (there's
> > already one there) so that one-half of the injection events would happen when
> > the intake valve was open?
> Jeff,
> 
> 	My understanding is that it doesn't matter too much when you 
> inject.  As a matter of fact, my friends state that injecting on a closed 
> intake valve may be better for fuel vapourization.
> 

Even Bosch says that you should not inject into an open inlet valve
(see the "Red Bosch Book").

Jens.
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           Jens Knickmeyer
Technische Universitaet Braunschweig
         Mikroporzessorlabor
 38106 Braunschweig near Wolfsburg
       knick at ibr.cs.tu-bs.de
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