eec egr scheme

[Mark Romans]

Partly right, you would have to retard the timing but it wouldn't change the
afr, just allow a hotter burn that occurs faster producing more nox and
probably pinging.
:-)   Mark
-----Original Message-----
From: Mattz <mattz at pond.com>
To: diy_efi at efi332.eng.ohio-state.edu <diy_efi at efi332.eng.ohio-state.edu>
Date: Monday, June 08, 1998 7:43 PM
Subject: Re: eec egr scheme


>
>-----Original Message-----
>From: Slava <cittt at cityline.ru>
>To: diy_efi at efi332.eng.ohio-state.edu <diy_efi at efi332.eng.ohio-state.edu>
>Date: Monday, June 08, 1998 2:08 PM
>Subject: Re: eec egr scheme
>
>
>>>with added EGR it will be neither rich nor lean
>>>the extra inert gas is not flowing through any of the metering system
>>>that affects incoming air, it is rerouted internally in the block
>>>so the A/F stays in sync
>>>but the timing has to be advanced to let it burn properly
>>>
>>>Clive
>>
>>It's true only for EFI with Mass Air Sensor like Bosch systems.  In EFI
>with
>>MAP sensor
>>extra inert gas will increase manifold
>>presser and A/F will be rich.
>>
>
>SO if one removed the egr (just as an example) it would run lean and you
>would have to retard timing to prevent detonation .. correct ?
>
>z
>
>