EGR

Bruce Plecan nacelp at bright.net
Fri Oct 9 05:08:20 GMT 1998


-----Original Message-----
From: David A. Cooley <n5xmt at bellsouth.net>
To: diy_efi at efi332.eng.ohio-state.edu <diy_efi at efi332.eng.ohio-state.edu>
Date: Friday, October 09, 1998 12:43 AM
Subject: re: EGR


>Why do you want to disable your egr?
>EGR is only active at part throttle cruise and is totally disabled at
>WOT... MPG actually improves slightly with EGR running on cruise.

Just thinking out loud here, but
do you think these statements might be a little far reaching?.

How about when you change cams to one with more overlap, where
it is generating more egr due to that?.  Might even be to the stage
of any more egr is too much.
  Off highway use application where keeping EGTs high for the Turbo.
  Would you beleive there may be EGR valves that while they don't
have vacuum applied at WOT, might open due to exhaust back pressure, and
need removed for racing applications.
  Maybe on some applications where they add fuel and timing when
the egr opens it actually hurts mileage.
  Maybe doing an initial calibration, and wants to optimize things
without egr, and then with so the transistions for egr on+off are
smoother.
Cheers

Bruce

>Later,
>Dave
>
>===========================================================
>           David Cooley N5XMT           Internet: N5XMT at bellsouth.net
>     Packet: N5XMT at KQ4LO.#INT.NC.USA.NA   T.A.P.R. Member #7068
>                     We are Borg... Prepare to be assimilated!
>===========================================================
>




More information about the Diy_efi mailing list