Big company. They also own Paxton.
at zero manifold pressure absolute. Super simple mechanical
fuel injection. Here is the chart.
--
Paul Lamar ...No rotor no motor.
Paul,
Just sent you one from procharger that you can check out.
We can decide then. But sure makes more sense to use this for a simple
injection system. We just couple it to a mechanical pump driven of the
eccentric shaft.
Larry
If you are going to do that we don't need the pressure
regulator. Fuel would be a straight line function of RPM.
Then we would need some way of leaning it. Sounds like
a Kinsler system.
Paul Lamar ...No rotor no motor.
Paul,
The fuel is not totally dependant on RPM, but is also influenced by load
(manifold pressure). Running a variable pitch prop can put more load at
cruise rpm than you will see with a fixed pitch prop. The system needs to
adjust to that.
Using the regulator with a mechanical pump, you get the best of both worlds.
Engine not turning over... no fuel pressure. Engine idling at 1800, low fuel
pump volume output so the regulator is able to return enough fuel to the
tank to do it's job...
Larry
Well perhaps but it is way more costly and more parts to break.
Suppose you lose a belt. Most regulators are going to cost
$200 right out of the gate. Mechanical pumps are not going
to be cheap. I built one a while back for apex seal oil. Worked great.
We can manually lean for a variable pitch prop during cruise.
A return line will simplify carb4. Then the regulator will be built in.
It combines carb4 with a built in regulator.
Manifold pressure is the main fuel control parameter. High manifold
pressure WOT high RPM. I don't think we need RPM. If manifold pressure
alone is used it goes rich when you slam open the throttle. In that
case you have low RPM high manifold pressure high fuel flow. This
takes the place of an accelerator pump. As the engine builds RPM and
airflow the mixture goes back to stoch.
Another needle controlling the rate of change of MAP in the vacuum
chamber will tend to control this.
Probably something else Vortech is doing. I think I will put
a fast response pressure sensor on the vacuum chamber and hook
it to a storage oscilloscope for development purposes.
Engine not turning over.... electric pump is off. Switch off the
pump to kill the engine.
I am back to build :)
Paul Lamar ...No rotor no motor.
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