Camshaft/crankshaft sense

[Frederic Breitwieser]

You could monitor cam/crank that way, by watching the rotation, however if 
your only concern is belt failure, you could easily mount a photo 
transistor (or four?) on the outside of the belt, and put one small light 
bulb in the center.  Actually, scratch that, an incandescent lamp is going 
to burn out too often.  A solid state device might work well, since there 
is no oil in under the timing cover that I know of.


Frederic Breitwieser
Homebrew Automotive Mailing List
Website: http://members.aol.com/fjb203/index.htm
Email: frederic.breitwieser at mcione.com & FJB203 at aol.com
Bridgeport, Connecticut



On Monday, May 12, 1997 12:05 PM, Edward C. Hernandez 
[SMTP:ehernan3 at ford.com] wrote:
> Kenton A. Hoover wrote:
>
> > A second question is, does anyone sense crankshaft and camshaft
> > positioning separately?  This sounds silly, but it would let one sense
> > timing belt/chain failure almost instantly, so one could inhibit plug
> > firing which might save some bent valves.  In theory, you could sense
> > belt/chain wear, but I don't think you'd want to spend the money on
> > that level of precision.
>
> Ford do it this way, ie, a cam sensor for TDC and crank sensor for
> engine position.
>
> Ed Hernandez
> Ford Motor Company
> ehernan3 at ed8719.pto.ford.com