KNOCKS

Peter Fenske ffnsp955 at bcit.bc.ca
Fri Apr 3 03:45:05 GMT 1998


Hi Gang..

Knock retard. When the ecm sees a knock signal the ecm will start
to pull out timing. ie retard the timing..The max timing the ecm will
pull out is given by a rpm indexed table.

How fast it pulls out the timing(attack??) is governed by
another rpm indexed table.

and how fast it releases or returns to normal timing is
governed by another rpm indexed table.

Note this is a generalization.. The knock module in 85-89 tpi and
the thick film in the newer pcms ecms are merely filter noise 
detectors.

later:peter




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