In cylinder pressure measurement

[Bruce Plecan]

Old stuff, there are several firms that were doing conversions to spark
plugs to include piezo electirc sensors in them.  If ya hunt under Piezio,
you should find em.  Was (5-6 years ago) $400-500 per plug to do, and that
was for the transducer, only.
  Circle Track, had an article about it several years ago..
Oh, I think one of the sensor sources from the Injector Flow bench, did the
plug conversion.
   I "think" detonation could kill'em
Grumpy

> Has anyone ever heard of anybody doing this? I was talking with someone
> about data acquisition systems and the subject came up while we were
> discussing methods of knock detection. I'm not to enthusiastic about being
> able to monitor A/F ratios accurately or in realtime, and our conversation
> kinda stuck with me.
> If anyone's ever seen or heard about somebody performing in cylinder
> pressure measurements I'd love to hear about it. I imagine the transducers
> would have to be pretty tough, how would they mount? What kind of sample
> rate do you think would be needed? Best of all, who would make a sensor
that
> could take the abuse???
> Charles Brooks