DIY_EFI Digest V4 #576

[Ade + Lamb Chop]

At 15:00 12/10/99 -0400, you wrote:
>>FWIW the rover mini system is a MEMS system... >what ever that means.
>
>"Modular Engine Management System".
>In principle the same ECU is fitted to every post-Lucas era 'MEMS'
>controlled Rover engined vehicle model (Honda engined versions use Jap
>electronics); that includes Mini, 200, 400, 600(turbo only) 800 and MGF.
>There obviously need to be variations due to engine spec - capacity, TBI or
>multi-point inj., ignition type - distributor or distributorless, turbo or
>nat-asp., etc. This is where the 'Modular' bit comes in; the ECU is
>fundamentally based on the same internals with various different hardware
>configurations and programs to accomodate the different sensors and
>actuators required for each individual application.
>You will come across a few different 'version' designators; eg. MEMS1.3,
>MEMS1.6, MEMS1.9 which   roughly segregate the applications.
>All MEMS systems use as a minimum the following sensors:

>Additional sensors , depending on application, include:
>Knock

What does the knock sensor do? What does it mean if I don't have one

>Fuel rail temperature

Why?

>All MEMS systems control ignition, either single coil or distributorless.
>All systems use a stepper motor controlled throttle stop for idle speed
>control.

Apart from the Mpi (97 on) minis which have a bypass valve which bleeds are
from the filter casing into the manifold.

>Hope this is of interest.

It is, thanks,

Ade