antilag and anti-lag

[rusefillc]

users are asking for antilag logic in rusEFI

[mmatousek89]

overview:
when driver demand via PPS is below some threshold
open ETC to 10-40%
retard ignition to 5-30deg ATDC
add 2-20% fuel

hints:
antilag should run engine in neutral gear around 3500rpm
antilag should not add too much torque to crankshaft between 3500-15000rpm driver expect neutral engine behaviour, engine braking is highly desired but hard to obtain

closed loop ideas:
watch turbospeed - open/close ETC to reduce or add turbospeed

conditions:
intake air temperature below 55degC
EGT below 975degC
coolant below 105degC
ALSactive no more than 5000ms in one continous activation
pedal position sensor over 90% at least once in actual driving cycle
als arming switch activated
pedal position sensor below 1%

[idi-moe]

Another thing to note is that rolling antilag would be useful in drag-racing scenarios. The necessary addition would be to maintain via closed-loop control a set RPM (with gear sensing?) or vehicle speed. A possible approach would be to use a modified rev-limiter function I think.

[elmepro]

Im ready to test antilag if needed, for this season i have (test turbo engine) for drifting

[rusefillc]

Thank you for your interest in rusEFI!

At the moment we do not have resources to figure out the roadmap towards anti lag feature. https://patreon.com/rusefi is one of the ways to help rusEFI!

[TurboMarian]

hi iam from argentina i work in a rally team i am a tuner Any information you need about the anti lag system. I can provide it. we work with MoTeC m800, evo IX and X MoTeC m130. and m142 direct injection THP engine I would like to see the addition of the anti lag system in rusefi i am currently using speeduino with my own anti lag system I don't know how to modify the rusefi code. but I would like to learn to be able to help

I'm working on ALS for rusEFI. I just started and I only work in my spare time so I don't know how long it will be before it's ready.

[TurboMarian]

I also wrote a simple LUA script for ALS. In the video, it was tested on Idle Valve, so not enough air, but as you can see it works.

rusEFI_ALS_LUA.mp4

[rusefillc]

@TurboMarian let me know if I can help with any code questions

Do you want to start PRing small pieces maybe the configuration part of the change?

[rusefillc]

@TurboMarian is your work available anywhere on github?

@Fera31 @idi-moe @elmepro see below does it look like minimal set of settings?

Who has what test mule? Please see the issue from my standpoint: I have very little feedback from end users, I do not know who has what successful install available for what testing. A lot of amazing progress could happen if we find a way to start helping each other :)

[TurboMarian]

@rusefillc ALS code is almost done. All the functions are working apart of "ETB AIR ADD" but I will work on it this weekend.

Should I post it on my github and send you a link or make pull request?
It will be nice if that can be part of rusEFI code.

[rusefillc]

Yes would be amazing if you could push to your github and maybe allow me to start picking pieces?

[TurboMarian]

Sure. I will update ETB air add code soon.

https://github.com/TurboMarian/rusefi