[Vwdiesel] Fueling screw on VE pumps. --( Rabbits )

[Jim Arnott]

Might I suggest that if one wants to really understand how this all 
works, one purchase a copy of the "Diesel Distributor Fuel Injection 
Pumps VE Technical Instruction" book from Bosch.  I bought it a couple 
years ago off their website and it is THE bible for these pumps.  IIRC, 
it was less than $10.

Jim

On Wednesday, Jul 21, 2004, at 17:01 America/Vancouver, H.Hagar wrote:

> Gavrik Peterson --- glad to see you involved.
>
> IMHO  it is going to take a lot of the better brains here to find a 
> simple way of
> explaining the incredible complex functioning of these little 
> delights. But lets ask
> everybody to come forward ---- all wet or not.   If I know you will 
> all know-- that you can
> take  to the bank.  I do not hold anything back.
>
> Notice I said LOAD was involved.    How does the pump know load ? is 
> can
> tell the difference of throttle position and RPM  --  when the gap go 
> bigger the
> control sleeve is moved to cover bleed hole.  ---more fuel.  If screw 
> is all the
> way in ---it covers hole according to factory setting for that pump 
> ---it is a stop
> collar welded or staked on thread. (Maximum fuel) ---
>
> Why do I keep calling it the fueling screw ? simple ---someone asked 
> how do we
> increase fuel delivery ---- for practical purposes it is the screw we 
> adjust to get more
> or less fuel.    "Mixture".        It is a mechanical stop for linkage 
> moving control sleeve.
>
> It pushes only , it does not pull.      Because of all the springs and 
> pivots involved
> it becomes a Rubik's cube of injection.   I for one will not give up 
> until I feel
> the pump has been tamed.   We will make it.
>
> Maximum load stop ?   fine --  maximum fuel ?  fine .  lots of ways to 
> describe it
> but I shall dig out the real Bosch name and translate it some day.
>
>> So turn in the fueling screw and you increase fuel at any pedal 
>> position.
>
> I don't think that this is true.
> Gavrik
>
>
> I say statement is pretty close -- is does increase fuel right across 
> the range. even at idle-
> that is why you have to reset idle stop.
>
> Hagar.
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>
Leopards break into the temple and drink to the dregs what is in the 
sacrificial pitchers; this is repeated over and over again; finally it 
can be calculated in advance, and it becomes part of the ceremony. 
-Kafka