NefMoto

Technical => Reverse Engineering => Topic started by: kacperoooni on March 15, 2023, 01:31:45 PM



Title: Throttle cut function in FR.
Post by: kacperoooni on March 15, 2023, 01:31:45 PM
Hi,

Does someone knows which function in FR is responsible for overboost throttle cut? Page, name or anything. Thanks!


Title: Re: Throttle cut function in FR.
Post by: prj on March 15, 2023, 01:57:34 PM
FUEREG

There is no throttle reaction to overboost though. Only if load is higher than spec.


Title: Re: Throttle cut function in FR.
Post by: kacperoooni on March 15, 2023, 04:57:57 PM
FUEREG

There is no throttle reaction to overboost though. Only if load is higher than spec.

Are you sure? I thought the same, but even with rescaled load on WOT (so it will never exceed specified) there is a throttle cut.



Title: Re: Throttle cut function in FR.
Post by: phila_dot on March 15, 2023, 05:41:19 PM
LDUVST


Title: Re: Throttle cut function in FR.
Post by: prj on March 15, 2023, 06:02:22 PM
Are you sure? I thought the same, but even with rescaled load on WOT (so it will never exceed specified) there is a throttle cut.
As you can see this throttle cut does absolutely nothing to the performance of the car.
You simply drop out of the "überweg" pressure ratio.



Title: Re: Throttle cut function in FR.
Post by: nyet on March 15, 2023, 09:34:48 PM
you are forcing to do your throttle to do what your PID should be doing.

Fix your PID, end of story.


Title: Re: Throttle cut function in FR.
Post by: kacperoooni on March 16, 2023, 10:53:49 AM
you are forcing to do your throttle to do what your PID should be doing.

Fix your PID, end of story.

With all due respect, but I didn't ask for solution. I wanted to know where the cut is coming from (function, not the reason)


Title: Re: Throttle cut function in FR.
Post by: kacperoooni on March 16, 2023, 10:55:04 AM
As you can see this throttle cut does absolutely nothing to the performance of the car.
You simply drop out of the "überweg" pressure ratio.



I wouldn't say it does nothing. The air mass dropped about ~30g


Title: Re: Throttle cut function in FR.
Post by: prj on March 17, 2023, 04:41:51 AM
I wouldn't say it does nothing. The air mass dropped about ~30g
Then on top of everything else wrong in your tune, the throttle and tq isn't calibrated properly either lol.


Title: Re: Throttle cut function in FR.
Post by: kacperoooni on March 17, 2023, 03:40:30 PM
Then on top of everything else wrong in your tune, the throttle and tq isn't calibrated properly either lol.

It may be true, anyway, it doesnt matter now. I want to know where is comes from as a fuc tion, not as a reason. I know that recalibrating PID will solve the problem. The purpose of the topic is not to solve the problem. It’s about gaining knowledge about me7. I always thought that throttle cut is related with TM interventions (load req>actual). But the log shows that its overboost related too. But i cant find the function where.


Title: Re: Throttle cut function in FR.
Post by: kacperoooni on March 17, 2023, 03:56:07 PM
LDUVST
Isnt that related with n249 only?


Title: Re: Throttle cut function in FR.
Post by: Blazius on March 17, 2023, 04:17:52 PM
Fix your overboost.

Also that boost request for that load is very very low, did you touch KFURL or something?


Title: Re: Throttle cut function in FR.
Post by: fknbrkn on March 17, 2023, 09:33:14 PM
"überweg"




Title: Re: Throttle cut function in FR.
Post by: kacperoooni on March 19, 2023, 09:48:31 AM
Isnt that related with n249 only?

nvm found it ;)