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Hi guys I'm trying to setup a fuel pressure safety on my g4x
Im using a gp rpm limit
I have map (kpa) along the top now I'm unsure wether to put differential fuel pressure or actual fuel pressure along the y axis :/
If differential pressure goes in along the y what do I set the values to?
Once that has been settled what numbers go into the main cells? Would that be the rpm you want it to cut to?
Thanks for the help
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I would use differential pressure (assuming your fuel pressure regulator is manifold pressure referenced), then you don't have to use a manifold pressure axis. So perhaps +/- 15% of your target pressure? You probably want to look at some logs see what the maximum variation is when things are working correctly so it doesn't falsely engage the rev limiter.
Put in the numbers you consider safe. Perhaps 2/3 your maximum RPM (since that will require roughly 2/3 the maximum fuel flow). Or if you want to stop the engine, set the RPM limit to 100 RPM
