Alleslowbuged
Active member
Hi,
MK1-83 send me a link to a diagram with measured camplate profile of a set of DI-camplates (I have also seen it in another thread here somewere, but can not find it again)
https://postimg.org/image/3lt7w2fbl/
I have done a lot of fettling with IDI pumps for VW and BMW and have also make some measurements and graphs for different combination of camplates and plungers. But with IDI engines the resistance of the nozzle is much lower so you can use the same nozzles for 75hp and 190hp.
As a result i start thinking if it would not be beneficial to try to cover the possible combinations of a set of "camplates - plunger - nozzle" a bit more analytic and try to come up with tables and graphs like:
- stroke vs. degree of pump rotation
- flow vs. degree of pump rotation
- flow vs. time
- mg / stroke (ecu unit) vs. stroke (camplate)
- mg / stroke (ecu unit) vs. mV (ecu output)
- expected injection pressure
- etc.
I am not sure if i will be able to come up with all this information in valid form, but i am sure i will be able to set up the needed excel file and calcuation code. So if some of you could provide some real life measurements to make some tuning for the flow efficiency and leakage rate, i can imagine that we could come up with decent graphs, which shoud be very helpfull to define the stup upfront an engine built.
to have the thread a bit mor shiny from the start up:
here is a pic from a 1.6TD vs 1.9 TDI (AFN) camplate
http://s702.photobucket.com/user/euro-styler/media/ESP Umbau/P1010018-1.jpg.html
here is theoretical fuel vs stroke (simplified)
http://s702.photobucket.com/user/euro-styler/media/ESP Umbau/Frdergeschwindigkeit_ESP.jpg.html
here is theoretical fuel vs rotation angle (simplified)
http://s702.photobucket.com/user/eu...Foumlrdergeschwindigkeit_zps6ad598f1.jpg.html
Best Regards
Alleslowbuged
P.S.
Here is a link to a "How to mod a mechanical injection pump"
(its german but there are a lot of pictures of all internal parts with decription)
http://www.golf1.info/forum/index.p...e-4-neu-mit-ausführlicher-einstell-anleitung/
I have allready setup an excel file with some calculations for the mech. injection pump, which will also suit for the electronic pumps, as they are only a simpler copy of the mech. pumps and will add "nozzles" as additionally parts of the systems as first step.
MK1-83 send me a link to a diagram with measured camplate profile of a set of DI-camplates (I have also seen it in another thread here somewere, but can not find it again)
https://postimg.org/image/3lt7w2fbl/
I have done a lot of fettling with IDI pumps for VW and BMW and have also make some measurements and graphs for different combination of camplates and plungers. But with IDI engines the resistance of the nozzle is much lower so you can use the same nozzles for 75hp and 190hp.
As a result i start thinking if it would not be beneficial to try to cover the possible combinations of a set of "camplates - plunger - nozzle" a bit more analytic and try to come up with tables and graphs like:
- stroke vs. degree of pump rotation
- flow vs. degree of pump rotation
- flow vs. time
- mg / stroke (ecu unit) vs. stroke (camplate)
- mg / stroke (ecu unit) vs. mV (ecu output)
- expected injection pressure
- etc.
I am not sure if i will be able to come up with all this information in valid form, but i am sure i will be able to set up the needed excel file and calcuation code. So if some of you could provide some real life measurements to make some tuning for the flow efficiency and leakage rate, i can imagine that we could come up with decent graphs, which shoud be very helpfull to define the stup upfront an engine built.
to have the thread a bit mor shiny from the start up:
here is a pic from a 1.6TD vs 1.9 TDI (AFN) camplate
http://s702.photobucket.com/user/euro-styler/media/ESP Umbau/P1010018-1.jpg.html
here is theoretical fuel vs stroke (simplified)
http://s702.photobucket.com/user/euro-styler/media/ESP Umbau/Frdergeschwindigkeit_ESP.jpg.html
here is theoretical fuel vs rotation angle (simplified)
http://s702.photobucket.com/user/eu...Foumlrdergeschwindigkeit_zps6ad598f1.jpg.html
Best Regards
Alleslowbuged
P.S.
Here is a link to a "How to mod a mechanical injection pump"
(its german but there are a lot of pictures of all internal parts with decription)
http://www.golf1.info/forum/index.p...e-4-neu-mit-ausführlicher-einstell-anleitung/
I have allready setup an excel file with some calculations for the mech. injection pump, which will also suit for the electronic pumps, as they are only a simpler copy of the mech. pumps and will add "nozzles" as additionally parts of the systems as first step.