Fuelling Question

[NigeT]

I've spent quite some time going through the fix and can't really see anything that tells me how the cranking pulse % relates to the VE table values. I wanted to see if my cranking pulse widths are anywhere near the idling pulse widths at the same temperature - just as a check and balance. First start (cold start) still seems a bit hit and miss.

Thanks,
Nigel.


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[jsmcortina]

It doesn't directly relate to the VE table values because of the other factors that are then multiplied in.
During cranking, the fuel PW is deadtime + (ReqFuel * crank% * factor)
The "factor" depends on the number of squirts you have set and whether alternating.

To compare your actual pulsewidths, take and review a datalog. But remember that the number of pulses per engine cycle may be different.

James

[billr]

My understanding is that the cranking PW also includes a correction for MAT. Am I simply wrong, or has that been changed?

[jsmcortina]

My understanding is that the cranking PW also includes a correction for MAT. Am I simply wrong, or has that been changed?

It hasn't ever to my knowledge.

James