Page 1 of 1
Run GS450H Oil pump linear to rpm
Posted: Wed Apr 19, 2023 8:34 pm
by Jackk
Is it atall possible to cycle the oil pump pwm output to increase linear with rpm?
Has anybody achieved this? It seems pointless to have the oil pump running whilst stuck in traffic. Mine is fairly noisy. Currently set to 30%. (Running zombieverter)
Any ideas would be great... I guess the vcu has all the information it needs to command this. Just needs implementing but I do not know where to start?
Thanks in advance
Re: Run GS450H Oil pump linear to rpm
Posted: Wed Apr 19, 2023 10:48 pm
by royhen99
It may be a simple as modifying the code in GS450.cpp
from
Code: Select all
if (Param::GetInt(Param::opmode) == MOD_RUN) Lexus_Oil2 = Param::GetInt(Param::OilPump);
to
Code: Select all
if (Param::GetInt(Param::opmode) == MOD_RUN) Lexus_Oil2 = Param::GetInt(Param::speed)/140;
This would set the pump at 100% at 14000rpm. This could be scaled as needed and a minimum set if required.
I am busy trying to modify code for my own application and failing so not the best person to advise on this, but maybe it will promt a comment from someone who knows a bit more about it.
Re: Run GS450H Oil pump linear to rpm
Posted: Thu Apr 20, 2023 1:08 pm
by Aragorn
i suspect the issue is you want to avoid clutch slip when moving off...
If you are stationary, the pump is off and the clutch is disengaged, i envisage that you'd press the throttle, the MG2 will accellerate rapidly because its uncoupled, then the pump will start and pressurise the clutch and have to capture the overspeed, which will be hard on the clutch and potentially jerky.
Additionally, you probably want constant clamping pressure thru the peak torque region, the clutch is holding gearbox torque, it doesnt really care about speed that much? Adjusting pressure based on torque demand is more like what a factory autobox would do.