Electronic variable vane control

oel_brenner

01-14-2009, 11:41 PM #24

(01-14-2009, 03:05 PM)GREASY_BEAST Yes, it would be really cool to set up electronic air and fuel management... but... with a mechanical pump, whats the point? I mean, other than being a cool technical challenge, and having a little more control over what happens and when, whats the gain? It certainly won't be very much more HP, or better burn characteristics because the real limitations in these respects are the injectors and the pump elements..

As far as the common rail is concerned, its a little more than just setting up the software... you have to have all the mechanical parts too and Forced is right, that would be extremely costly.

So maybe I'm missing something big, but seriously, what could possibly benefit from this setup?

EDIT: To clarify, precise control over throttle position is something you can more or less do with your foot. To me that doesn't seem very special. The benefit of electronically controlled diesel injection seems to be controlling number of injections per cycle, individual injection durations, delay timing between injections, injection volumes, pressures, etc etc etc as well as combustion environment (air), all tied together with inputs from the electronic sensory nervous system... None of these benefits can really happen without lots of expensive metal stuff. Or can they happen with cheaper metal stuff?

as far as my vision for EMS goes.. I would not want to change anything about the mechanical engines, they should stay mechanical.. use the EMS simply to help tune and refine. Use all the existing sensors, and maybe add new ones but it stays mechanical

for the all electronic engines (OM606 and the CDI engines), as I understand it, is getting access to software to change things to make more power is the difficult part.
thats where the open EMS comes into play. All the actuators, sensors, control devices etc are all CAN-bus so they all "talk" via a common protocol to the host processor. This host processor is the only part I would replace, and it would be open hardware, with open source software not unlike the MS stuff is now..
I don't think retrofitting CDI on an older engine would be worth the effort

cars
1991 W126 350SDL turbodiesel
1987 W124 E300D turbodiesel
1987 W126 300SDL turbodiesel
1984 W107 SL300D turbodiesel
1974 W115 /8 300D diesel

trucks
2001 Dodge RAM 3500 4x4 Cummins turbodiesel

boats
1974 Uniflite "Salty Dog" powered by
2x OM617.951 Mercedes Benz 5Cyl turbodiesels

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