VE bosch pump

[spectric]

Hi everyone

Been looking into this pump that is fitted to my 2500cc 4 cylinder landrover.

I think I now understand how it works but does anyone have any detailed info on the setup or tuning of this pump ?

One thing that I have not yet found out concerns the max fuel screw. This I am sure sets the absolute max fuel that the pump can deliver but under what conditions ?

Is this max fuel delivery then further controled by the boost compensation device ?

thanks roy

 

[Paulista]

Spectric,
My MWM 4-cylinder turbo-diesels are also so equipped(Bosch VE), the same being the case for Dodge Ram trucks of a certain vintage fitted with 6-cylinder Cummins turbo-diesels.

At the time I did a search on GOOGLE (Dodge Ram etc) and found detailed adjustment info on the Bosch VE pump....should I locate the print-out in my files, will supply you with the site particulars.

Until then and if you have no luck, locate TST Products out in the US Midwest via GOOGLE. Their primary business is upping power output on Diesels, including Cummins 6 BTA´s. They could give you a lead on where to look for detailed adjustments to the Bosch VE...

 

[Darren3]

Hello,

The VE pumps are used on loads of vehicles.

This may be of interest

http://www.4crawler.com/Diesel/SAE/vwtdsae.shtml

There are some diagrams hidden somewhere at

http://www.dieselbike.net/

the site is down so I can't find a direct link

Also search on VW forums (search google or similar for others)

http://www.vwdiesel.net/phpBB/viewforum.php?f=6&sid=6f58902ca85697da489ef74f05beb790

or other forums (eg

http://www.andyspares.com/discussionforum/default.asp)

Hope this helps
Darren

 

[Paulista]

Spectric,

GOOGLE has just delivered the site I had originally in mind:

http://dodgeram.org/tech/dsl/more_power/Power_ve.htm

It gives you the detail you were looking for concerning the BOSCH VE pump and there is even mention of BOSCH VE pumps as fitted on Land-Rovers (in French, though!)

 

[spectric]

Hi all

Thanks for the info, found on the

http://www.4crawler.com

site some info that clears up one of my issues.

It states that the LDA is a " boost controlled full load stop " which means that the max delivery of the pump as set by the max fuel screw only occurs under max boost conditions.

On the

http://dodgeram.org/

site there were some interesting diagrams but found the idea of a smoke adjusting screw a bit vague and it seemed to miss any technical explanations for the adjustments.

thanks Roy

 

[Paulista]

The adjustments are sometimes intuitive and at other times purely empirical.

But they are time-tested and repeatable events and form the great mass of knowledge called "technology" in everyday parlance.

If warranted and economically justifiable, a cause-effect (scientific ?) explanation could be developed.

But having affirmed earlier that most issues were resolved excepting for max fuel delivery rate.....would have thought that the detailed pump workings on Dodge Ram should have prompted a successful "fill in the blanks".

And of course, there is another limit for max fuel delivery at zero boost pressure (turbo down), which allows for a "limp mode" engine with minimal smoke. I have experienced this and it works !