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Okay Ed,
Enclosed is a chart of some data from my second
engine run. Clearly I have more work to do, since my coolant out temperature is
higher than my coolant in temperature!! I thought I had the calibrations done,
but they are different sensors so I will have to recalibrate them.
Looks like you can tell when the oil thermostat
opened. Temp was climbing steadily and then leveled off.
Lots more work to do. The engine is running very
rich, I think I need to use mode 3 to reduce injector flow rate. Also have the
following phenomena -- when I shut off the fuel pumps, the engine continues to
run just fine.I stopped the engine by shutting off the injectors.
My last experiment was plugging the inlet and
outlet lines (they currently are drawing/returning to a 5 gallon can) and then
starting the engine without turning on the fuel pump at all (there was residual
pressure showing). The engine ran for 3 minutes, and really smoothed out as the
fuel pressure dropped to about 8 psi, and the fuel rich indicator on the EM-2
moved down into a reasonable range.
I think what is happening is that the fuel filters
are mounted horizontally, and can trap some air in the top of the filter, which
then serves to maintain the flow to the engine.
How fast does your engine die when you shut off the
fuel pump?
Bill Schertz
Bill Schertz
KIS Cruiser
#4045
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