Re: Fuel Enrichment Device

[Miles Lott <milos@insync.net>]

If you short the contacts of the temp sensor, you duplicate exactly what
the WOT switch does.  As I remember, it puts an 80 % duty cycle on the 
fuel pressure return valve, so that fuel pressure is near the maximum the
system can manage.  I have this for warming up the engine, and it does
make a nice boost switch, too;)

On Thu, 15 Jan 1998, Etrik wrote:

> Brett VanSprewenburg wrote:
> > 
> > 
> > You win the prize!  You've correctly described how the TT device works.  Now
> > two questions need to be answered:
> > 
> > 1. What's the resistance value for to drive correct fuel/air ratio at WOT?
> > 2. Under what circumstances does the OX drive the control pressure regulator
> > into a 40 second enrichment condition?
> > 
> > I'm going to answer both of those questions.
> > 
> > As for testing it...if you run the Bentley manual tests on your control systems,
> > sensors, and stock enrichment devices, then you test your additions...and
> > everything checks out, how could it not work? :-)
> > 
> > I'll keep you posted.
> > 
> 
> :).  Well, there is only one way I can think of to get the resistance
> value,
> find somebody that has a TT moudle, unplug it, and test the resistance 
> when it is activated, this would be the easy way of course, and I am
> sure
> there is another way.
> 
> Hmmm, I think I would have to answer when the coolent temp changes for
> number 2, what do ya think?
> 
> Heres an idea,  we know what the signale to the DPR needs to be 20.5mA,
> which is 13:1. So you could put a meter on the DPR and hook a fairly
> big pot in place of the temp sensor, you could then get a ballpark
> value and tweek it with fixed resistors,  This is another hack way
> to do it.  
> 
> I may just have to take a ride to the local electroincs supply (I can
> get one of those nifty cases a radio shack) and try this out.
> 
> Etrik
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