[Diy_efi] Spark knock detection

[Mike]

My Nissan 3L Turbo (RB30ET) manual states something about it
being ignored past 3000 rpm - possibly because there is so
much other noise. Also the block has provision for 3 sensors
between each pair of cylinders, though only the centre one
is used

rgds

mike


At 11:34 AM 12/9/2002 -0500, you wrote:
>
>
>Keith Ballantyne wrote:
>> 
>> How hard is it to actually mount a knock sensor to an engine that has
>> never had such equipment?  I always thought they needed to be mounted in
>> the head somewhere.
>> 
>> Keith Ballantyne
>
>Look in the archives (diy and gmecm), there's a lot about GM knock
>detection  The knock detector is a piezo electric microphone and it
>screws into the block.  It can go anywhere with a good solid mechanical
>connection to the block, so that it can "hear" well.  The engine
>specific filtering and processing is done in the ESC module, a separate
>device on C3 ECMs and built into the memcal on C4 ECMs.  ESC sends a
>yes/no signal to the ECM.
>
>--steve
>
>
>-- 
>Steve Ravet
>steve.ravet at arm.com
>ARM,Inc.
>www.arm.com
>
>_______________________________________________
>Diy_efi mailing list
>Diy_efi at diy-efi.org
>http://www.diy-efi.org/mailman/listinfo/diy_efi
>
>

_______________________________________________
Diy_efi mailing list
Diy_efi at diy-efi.org
http://www.diy-efi.org/mailman/listinfo/diy_efi