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From: bhs@siemens.UUCP
Newsgroups: net.auto
Subject: Re: Wanted info on anti-knock device
Message-ID: <25300010@siemens.UUCP>
Date: Sat, 16-Feb-85 20:56:00 EST
Article-I.D.: siemens.25300010
Posted: Sat Feb 16 20:56:00 1985
Date-Received: Tue, 19-Feb-85 08:27:09 EST
References: <365@leadsv.UUCP>
Lines: 17
Nf-ID: #R:leadsv:-36500:siemens:25300010:000:628
Nf-From: siemens!bhs    Feb 16 20:56:00 1985



Hello: 

Just about every american car sld today has this anti knock sensor in it, with
a difference in operation: when it detects knocking, the ignition timing is
retarded, which achieves the same result and presumeably is better for
pollution control.
The pinnacle of this technique is currently reached by AMC with the 2.2 liter
jeep four cylinder (in new Cherokees and Wagoneers). This system has a sensor
for each of the four cylinders, and will retard the timing only for the
cylinder which is knocking. This enables all cylinders to run at optimum
ignition timing.

Bernard Schwab
Siemens RTL Princeton, NJ
siemens!bhs