Hello, I am not understanding the rev limiter function calibration. Along with the hard fuel cut limit, the 3 tables seem to fully define the intended operation, what is the purpose of the “Min rpm error” calibration? I set it to -500 to align with the min rpm value in the ignition angle correction table but I don’t think this is correct! It seems to offset the full rpm axis as my rev limiter kicked in much earlier than expected, I get 20% cylinder cut at 7000 rpm with this cal.
Is there a SW manual with more description of the individual functions? Equations that the ECU is using? I have the User Manual and Software Guide and the help within the EMU Pro Client but none give a detailed description. I have similar question related to the fuel film. I’d like to know the equations in use because then i can do a bench cal after a few throttle ramp tests.
-500 , that means if actual RPM limit target is 7500 then -500 = 7000rpm, is now treshold when all limiter function start. And when you have first cut value 20% in first error collumn , then it use that as closest. You need to add bigger negative error column and set it to 0% to blend action closer to target value(similar like ignition angle correction is).
Many of default setting, it just base example. Here, sooner limiting is safer for first settings, you can set it whatewer you like later. And you can see, there is also hard limiter value, so you can simply zero or set high target limiter rpm, and then just let it cut on hard cut target number you see. All is on you.
