Needing torque control

Testing and development of Megasquirt 3

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Needing torque control

Postby jeffmarsh750 » Sat Oct 07, 2017 10:57 pm

Looking to be able to cut power during shift, such as retarding timing at the shift point and it must be able to be ramped back in, not just a cut and then back on.
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Re: Needing torque control

Postby mega_user » Wed Oct 11, 2017 2:16 pm

It is quite often used in race cars with dog box transmissions. A full spark cut is a little bit hard on the transmission. It should be simple to add spark retard in the firmware to sequential shift cut setting.
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Re: Needing torque control

Postby samh » Thu Oct 12, 2017 1:09 am

Yes A retard after shift would be extremely useful!
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Re: Needing torque control

Postby samh » Sun Oct 22, 2017 12:23 pm

Is this a possibility? Can this be added to current code with out a major code rewrite?
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Re: Needing torque control

Postby jeffmarsh750 » Sat Nov 25, 2017 10:08 am

Would also like Torque Control for driveline target speed. I am going to switch ECU's if this can't be available in the next month or so.
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Re: Needing torque control

Postby thokes82 » Sat Nov 25, 2017 1:58 pm

Yes, we need this...
Wasn't the first request of this kind viewtopic.php?f=125&t=67369
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Re: Needing torque control

Postby wes kiser » Tue Nov 28, 2017 7:45 pm

Although I agree all the "bones" to implement this as a feature are already in place (and it could be easy/useful), there is a bit of a workaround available to do this if you wanted/needed it in the meantime.

The "on/off" based knock control could be used to do this. It could either be tied directly to a physical input, or a software loop. All the required retard and recovery timers and tuning parameters you would need are already there. Not saying a simple "retard to" and "recovery time" tied to either flatshfit or sequential shift cut would not be a better way to accomplish this, simply explaining how the same thing can be accomplished via existing features in the mean time.
86 Rx-7, swapped to 2.3 ford turbo (BW EFR 6758), ms3/ms3x sequential fuel /waste spark, ls2 coils
88 Tbird 2.3t, Microsquirt Module (PIMP), TFI ignition
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