simple analog fuel injection comments from CSH, HQ

Ken Kelly kenkelly at lucent.com
Wed Jun 24 17:51:47 GMT 1998


Gary,
	Pontiac used a variation of the Chevy FI. It was not EFI.
The Chrysler used a Bendix vacuum tube system. I understand
that a small number were actually built and shipped to
customers, but there were so many problems they were all
converted to Carb systems by Chrysler.

		Ken

Gary Derian wrote:
> 
> I believe that Pontiac also used that Bendix vacuum tube EFI in '57 or '58.
> Meanwhile, Duntov went with mechanical MAF, or more actually Velocity Air
> Flow, for the Vette.
> 
> By the way, those Bosch mechanical systems used from 1955 were speed density
> with one squirt per cycle and the squirt size proportional to intake vacuum
> (used a leather diaphragm).  I put on on a Vega engine in 1973, worked well.
> Bosch went to alpha-n in the late 60's.  The fuel map was a 3D cam, sorta
> looked like a beat up wheel bearing race.  In and out was alpha, round and
> round was n.  All that linkage synchronized the throttle position with the
> cam.
> 
> Gary Derian <gderian at cybergate.net>
> 
> From: Jim Davies <jimd at vcc.bc.ca>
> >
> >On Wed, 24 Jun 1998 goflo at pacbell.net wrote:
> >
> >> Anyway, I am vaguely aware that Bendix pioneered EFI - Did'nt realize
> >> it was vacuum tube technology. I'm going to poke around a bit for
> >> details. If you could point at any pertinent links I'd be interested.
> >>
> >For a real challenge, see if you can find a 1958 Chrysler shop manual. It
> >was used on some 300s that year.Dont know if they actually put it in the
> >manual tho...
> >



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