Throttle Plate Control

[robert dingli]

> 
> On Fri, 12 May 1995, Craig Pugsley wrote:
> 
> > 
> > Hi,
> > I'm currently designing a rev limiter that works by cutting out the
> > spark when the revs exceed a certain limit. I was thinking of
> > progressively cutting out more sparks as the revs go over a certain
> > level to reduce power (eg at 7000 rpm) then all the sparks (eg
> > 7500 rpm) IE:
> > 
> > 
> I would cut fuel instead of spark (or at least both) if your going to be 
> ramping the spark out. I'm assuming you're killing the spark instead of 
> retarding it when your limiter is starting to come on. I tried this a few 
> years back and blew a few mufflers off the car.
> Mike...
> C & M Racing Systems
> 
> 

I second this.  We recently had a bug with our research engine which cut
the spark under partial load conditions and subsequently blew a double skin 
stainless steel muffler inside out.

Robert
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             Robert Dingli           r.dingli at ee.mu.oz.au

Power and Control Systems                 Thermodynamics Research Lab
Electrical Engineering                    Mechanical Engineering
   (+613) 344 7966                           (+613) 344 6728
  University of Melbourne, Parkville, 3052, Victoria, AUSTRALIA
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