[Vwdiesel] Injection pump

[Lee Hillsgrove]

  Reposted per Hagar's request for the archives.


Lee
Oo-v-oO
PP-ASEL
KB1GNI


----- Original Message ----- 
From: "Lee Hillsgrove" <hillsgrove at adelphia.net>
To: <vwdiesel at vwfans.com>
Sent: Saturday, January 01, 2005 10:57 PM
Subject: Re: [Vwdiesel] Engine Lineage


>
>
>   I have the green Bosch diesel fuel injection book and the yellow VE pump
> booklet here.
>
>  There is a difference in the governors. They describe them as being a
> "min-max" and "variable speed" governor - autos use the min-max. This
allows
> the governor to control the idle and maximum speeds, with your foot
> regulating everything in-between. If you come to a hill, the speed
"droops"
> and you have to increase the fueling with your foot. This is desirable for
> mobile applications. The industrial engines use the variable speed
governor,
> in which all speeds between minimum and maximum are closely governed.
While
> this might seem to be a good choice for a car, it would leave much to be
> desired, especially in slippery conditions. Once you set a speed with your
> foot and you wanted to speed up slightly, you would change the position of
> the throttle lever just slightly with your foot. An automotive governor
> would respond by slightly increasing the position of the control collar;
if
> that was not enough, you'd slightly increase the position of the throttle
> lever until the desired amount of acceleration was delivered, or you ran
out
> of engine power delivery.
>  With the stationary engine's governor, any deviation from the rpm set by
> the throttle lever's position would result in a very large response in the
> position of the control collar, until the rpm returned to a level
> corresponding to the position of the throttle lever. In other words, a
> slight movement in the accelerator pedal would be the same as putting it
> right to the floor until the engine speed caught up with where the pedal
was
> set. In lower gears, such as at parking lot speeds in 1st, this would be,
> shall we say, less than graceful.
>  Looking at the simplified illustrations, it would appear that there is
some
> difference in the number and location of the springs as well as some
linkage
> differences. The book does not say, but I would guess a pump rebuilder
would
> be able to source the correct governor bits and rebuild an auto pump for
> industrial duty, or vice-versa. Just an assumption on my part, though.
>
> HTH,
>
> Lee
> Oo-v-oO
> PP-ASEL
> KB1GNI
>
>
>
> ----- Original Message ----- 
> From: "Sandy Cameron" <scameron at compmore.net>
> To: <vwdiesel at vwfans.com>
> Sent: Saturday, January 01, 2005 12:56 PM
> Subject: Re: [Vwdiesel] Engine Lineage
>
>
> > At 02:57 AM 01/01/05 -0500, Val  wrote:
> > >>
> > > I can say that the industrial 1.488 diesel sure looks like the
> > > 1.5 NA.  Oh, another difference.  The Bosch injector pumps
> > > were configured so that the "throttle position" was really
> > > an RPM setting.  I'm sure it was a different injector pump,
> > > although it looked the same.
> >
> >
> > OK----- Challenge to the pump gang ! !
> >
> > What's the difference??
> >
> > If there is ANY way to change the car pump to a speed governing pump, I
> need
> > to know, for the volksgen project
> >
> > List VE pump web sites, is the constant speed one a VE or something
else?
> > Does someone have a VE manual that describes the difference?
> >
> > I,m going to try my local Bosch injection shop and see if they know, and
> if
> > they would convert one. The guys there are friendly and let me wander
> > through the shop. Also sold me a pump shaft seal at his cost.
> >
> > Sandy
> >
> > _______________________________________________
> > Vwdiesel mailing list
> > Vwdiesel at vwfans.com
> > http://www.audifans.com/mailman/listinfo/vwdiesel
> >
>
>
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