Knock Sensing (More)

[RABBITT_Andrew at mv8.orbeng.com.au]

> until the point of incipient detenation (can't be heard). At
> this point the CHT keeps rising and EGT drops. If you let this 
> continue...

The EGT is probably dropping because of the increased heat transfer to 
the cylinder wall caused by the vastly increased turbulence during 
knock.  A properly designed knock sensor based controller will respond 
much faster than a thermocouple in the exhaust will, reducing the 
chance of engine damage.  Neat way of tuning a mechanical system 
though!.

Andrew Rabbitt