Knock sensor on dyno

Bruce Plecan nacelp at
Wed Jan 12 23:24:16 GMT 2000

What you call AE Enrichment noise might be trace detonation  (gm uses a
"burst knock table to cover this situation in some applications)

| Take a look at
| This shows some of the work that I have done on recording and analyzing
| the signal off of an Eagle Talon knock sensor.  The sensor does not
| seem to be "tuned" that I can tell, it's just a wide band microphone.
| I am assuming that the GM sensors are very similar.
| The Talon uses a fancy filter circuit inside the ECU to detect knock,
| but I have never been able to figure out exactly what it looks for
| in the signal.
| -Bill

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