Knock Question

[steve ravet]

xxalexx at ix.netcom.com wrote:
> 
> > From:          "M&D" <91coupe at bellsouth.net>
> > To:            <diy_efi at efi332.eng.ohio-state.edu>
> > Subject:       Re: Knock Question
> > Date:          Sat, 14 Mar 1998 23:59:33 -0500
> > Reply-to:      diy_efi at efi332.eng.ohio-state.edu
> 
> There must be over 100 papers on this subject.
> All manufactures are looking at measuring  ion current of combustion
> for individual cylinder a/f, pressure(knock), and misfire detection.
> It seems the simplest method is to run a constant DC voltage across
> spark plug after firing. A current will be generated depending on
> ions in gas.   I was looking into this last year, I will try to give
> a literature review later.  I think SGS just came out with a chip.
> alex

I can't find any reference to it on the ST WWW page.  All I see are coil
driver type parts, vb020, vb024, vb027.  Any idea who else might have a
part like that?

--steve


--
Steve Ravet
International Meta Systems
http://www.imes.com
steve at imes.com