Smooth Throttle for UpRev

Jordo! · 10-04-2011, 12:51 AM

Awesome, thanks -- I will pass this on

Quote:

Originally Posted by wstar

I should add a request too: does anyone out there understand what the "Driving Force" vs "Flow Potential" axes really mean?

"Driving Force" appears to = Load and "Flow Potential" is either VE or MAF counts (or a calculated perecentage based on both).

Load is based on RPM, VE, and g/sec of metered air, so that's probably about right.

wstar · 10-04-2011, 07:30 AM

Quote:

Originally Posted by Jordo!

Awesome, thanks -- I will pass this on

"Driving Force" appears to = Load and "Flow Potential" is either VE or MAF counts (or a calculated perecentage based on both).

Load is based on RPM, VE, and g/sec of metered air, so that's probably about right.

Yeah the table still doesn't make intuitive sense to me though. The tuner I used (as in, the dyno-tuning professional) seemed to know what he was doing and set all "3800" values in the last few columns though, and that seems to correspond to WOT at full pedal.

It's clear from experimenting that this table does affect how the throttle reacts to pedal input, but both of the non-obvious labels seem like secondary effects. The position of the throttle butterfly will determine airflow, and that combined with RPM is pretty much going to define load or driving force or whatever. It just seems like one of these axes must be mislabeled for this to be a throttle table.

TKomodo · 11-07-2014, 10:19 AM

Quote:

Originally Posted by wstar

Yeah the table still doesn't make intuitive sense to me though. The tuner I used (as in, the dyno-tuning professional) seemed to know what he was doing and set all "3800" values in the last few columns though, and that seems to correspond to WOT at full pedal.

It's clear from experimenting that this table does affect how the throttle reacts to pedal input, but both of the non-obvious labels seem like secondary effects. The position of the throttle butterfly will determine airflow, and that combined with RPM is pretty much going to define load or driving force or whatever. It just seems like one of these axes must be mislabeled for this to be a throttle table.

Maybe this will help explain driving force values
Car Physics

Jordo! · 12-14-2014, 02:52 PM

Quote:

Originally Posted by TKomodo

Maybe this will help explain driving force values
Car Physics

That's potentially quite useful, but a lot of math.

Are there any calculators that might make it easier to apply those ideas to the uprev tables?

I guess one could be made in excel...?

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