Injector Driver

Van Setten, Tim (AZ75) Tim.Van.Setten at CAS.honeywell.com
Mon Mar 8 15:55:55 GMT 1999


> Not really what I had in mind Ward, but thanks anyways!  I want to use
> this PCM to drive 4 Rochester TBI injectors instead of two, in delayed
> channel synchronous TBI mode (picture a PCM driving a 900 CFM Holley).
> But, I would much prefer to drive the injectors as two series "pairs",
> directly via the PCM, as opposed to through the custom external 2-4
> channel P&H driver box that I have at the current time.
> 
If I understand you correctly, you are going to hook up two injectors in
series.  Be careful here because you are not just dealing with resistance
and current.  Injectors also have inductance, and because of this, it
controls the time it takes for them to turn on.  Adding two injectors in
series will more than double the time it takes to turn them on, and if they
are not exactly the same, one will fire before the other.
Tim.



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