[Diy_efi] Crank sensor for knock detection?

[Erik Jacobs]

> Yeah knock sensor for knock detection is easy, lol.  What about
> analyzing the crank sensor waveform in real time to detect detonation.
> Is it possible, and is it done on production engines that don't come
> with knock sensors?

you would need a crank sensor that is capable of noticing the small
perturbation in crank position caused by a detonation event.  I think that
most crank sensors are hall-type (pulse) are they not?


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