Knock sensor interface

[Seth]

Bernd-

Didn't immediately find that book, but Introduction to Internal
Combustion Engines, 2nd Edition, by Richard Stone, published by SAE has
a few words to say. Page 172-173

"Forlani and Ferranti (1987) report that  the signal is typically
filtered with a band ass of 6-10 kHz, and examined in a window from tdc
to 70 degrees after tdc. Since the cylinder is examined for a particular
time window, then the knocking cylinder cna be identified, and the
ignition timing retarded selectively."

It refers to SAE paper 87002

A quick search of the SAE site brought up paper 980522, "Engine Knock
Detection: Products, Tools and Emerging Research.

I didn't see paper 87002 available for download.


Good luck!

-Seth

Bernd Felsche wrote:
> 
> As part of the data-acquisition system I'm designing, I need to
> interface to the knock sensor.
> 
> Having browsed the diy_efi web site and found the Intersil HIP9010,
> I downloaded and read the data sheet and AN9770 application note.
> 
> Comparatively-speaking; I'm none the wiser. :-(
> 
> How do I determine the significant background and knock sensor
> frequency bandwidths?
> 
> Should I just "suck it and see" based on "guesstimates"?
> 
> Any pointers to relevant resources would be welcome.
> 
> --
> Real Name: Bernd Felsche
>     Email: nospam.bernie at perth.DIALix.com.au
>         http://www.perth.dialix.com.au/~bernie - Private HP
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