[Vwdiesel] Bosch FI Pump Pictures and Book Reference.

[Michael Snow]

> The VW's Bosch pump uses a single plunger and cylinder to create high
> pressure.  The stroke of this "plunger" is constant, but the amount
> of fuel actually pumped at high pressure is varied by moving a control
> collar that opens a port to relieve pressure during part of the plunger's
> stroke.  The plunger is moved back & forth as the injection pump toothed
> pulley is turned.  This is shown in the referenced pictures.
>
> The movement of the control collar adjusts how much fuel is pumped
> per stroke.  This control collar is moved by the governor mechanism,
> which is adjusted by movement of the lever connected to the throttle
> cable.  The "adjustment screw" I talked about actually changes how the
> outside throttle lever affects the governor mechanism.
>
> There is a fuel distributor on the end of the pump, to select which
> injector gets the "shot" of fuel.
>
> A very good book on this stuff is a Robert Bosch book titled "Diesel
> Fuel Injection".  The ISBN is 1-56091-542-0.  My 1st edition was
> published in 1994.  It's about 3/8" thick, so it's not huge.


I've read the book.  It's worth the purchase price.  Does anyone on the
list have anything other than anecdotal evidence that shows whether the
  pump cam and fuel delivery valves are the same for the TD and NA pumps?

Mike Snow