Cranking comp stop condition

Discussion and support for MoTeC's new entry level ECUs

Cranking comp stop condition

Postby acca on Fri Jun 14, 2019 10:20 pm

Hello
Cranking comp table allows to add extra gasoline for starting
I'd like to know wich parameter defines the moment when this compensation is stopped.
Not clear for me
Thanks
acca
 
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Re: Cranking comp stop condition

Postby David Ferguson on Sat Jun 15, 2019 1:19 am

Normally, you would make sure at least the final column (Cranking Time -CrTm) has zeros for the compensation. You can change the values on the CrTm axis to cause this compensation to last as long or short as you wish.

Be sure to press F1 to view the help for this table.
David Ferguson
Veracity Racing Data
Check out Shift RPM - https://shiftrpm.veracitydata.com
David Ferguson
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Re: Cranking comp stop condition

Postby acca on Sat Jun 15, 2019 1:56 am

Thanks, i red it
It says
"Note that once the engine starts F(Strt) will read the compensation from
the Post Start comp."

I'm not sure to understand :
If the engine starts, there is no more Crank compensation, even if the engine started faster than the bigger value of CrTm axis.
For example if the bigger value of CrTm axis is 10 seconds and the engine starts in 2 seconds, will the crank compensation be applied during the remaining 8 seconds ?
acca
 
Posts: 26
Joined: Tue Apr 30, 2013 3:08 am

Re: Cranking comp stop condition

Postby David Ferguson on Sat Jun 15, 2019 1:58 am

Obviously the cranking compensation is only active while cranking. When the engine transitions to running, the Post-Start Compensation and other running compensations take over.

Sorry I did not understand your original question.

The parameter that controls when the engine is running is this: Adjust->Misc Setup->Run RPM. That defines the RPM at which the ECU treats the engine as running.
David Ferguson
Veracity Racing Data
Check out Shift RPM - https://shiftrpm.veracitydata.com
David Ferguson
Pro User
 
Posts: 799
Joined: Fri Nov 07, 2008 1:45 am
Location: Paso Robles, California

Re: Cranking comp stop condition

Postby acca on Sat Jun 15, 2019 2:07 am

Ok, thank you very much
It's clear now
acca
 
Posts: 26
Joined: Tue Apr 30, 2013 3:08 am


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