GM ECM injector driver capacity

[Bruce Plecan]

-----Original Message-----
From: Ken Kelly <kenkelly at lucent.com>
To: diy_efi at efi332.eng.ohio-state.edu <diy_efi at efi332.eng.ohio-state.edu>
Date: Monday, August 24, 1998 7:26 PM
Subject: Re: GM ECM injector driver capacity


 You may be able to run the ECM all day
>> >with the resistors, and still blow it up the first time you
>> >stick the inductive load on it.
>> 
>> OK, then sent me what you'd consider to be the right inductive
>> load, and I'll test that.
>> 
>> Upon reflection,  the 165 was used to fire a single TBI so it,
>> can do a "I think 2 ohm load".  Also, PPF wrote in the last
>> couple mounths about grounding a terminal to current limit
>> the 730, and In the 165 TBI application they tied two wires
>> differently for the TBI.
>> Cheers
>> Bruce
>
>Bruce,
> Do you know of any online reference that gives the Injector
>specs? I will look at it to see if I can figure out a
>reasonable load. The one problem that may be difficult to
>model is that releasing the injector can actually create a
>voltage spike from the plunger returning to its seat.
>
> Ken
>
Just being dumb here, but why would increaseing the load raise
the back EMF,  I can understand having a higher current load to deal
with, since the higher switching currents, but the voltages should be
close eh?. 
Cheers
Bruce