Car is running
http://www.youtube.com/watch?v=TEZqa2bcTDo
Solved:
- While cranking injection angle is 720deg, not the value in table.
- So for direct injection, cheat is needed: I set that parameter to 720deg and rotate to wrong position injector outputs so i can start the engine. Thanks for the hint.
- PWM frequency of DBW(drive by wire) is 488.28Hz what is to low. DBW is louder than engine at idle. At stock car that frequency is 8kHz what is TCCR0|=0x05
- DONE: implemented (8kHz default with VEMS now)
- When DBW is enabled, treshold for idle should be PPS (=pedal position) not TPS.
- DONE: PPS or TPS: configurable since 1.2.19 (2014), see GenBoard/UnderDevelopment/FirmwareChanges New settings in ETC dialog
Both requests have been implemented (since 2014), selectable TPS/PPS1 threshold for IAC activation and selectable PWM frequency.
- See VemsTuneVersion (don't forget to update ini's from server)
I'm working on car with TFSI engine. 2.0 16v engine , 60-2 with camsyc(4 pulses, 3 can be filtered), variable cam ... and FSI injectors(spraying direct inside combustion camber at high pressure).
So problem is that engine has only 3-30bar(pressure depending on revs and how long do you crank and how long is engine turned of...) of pressure of fuel during cranking. Normal working pressure is 120bar.
Also engine has pressure sensor(0-5V) so i need to change req_fuel(fueltrim) depending on that voltage(pressure). But current scale is only 178% more, but i need a least 800% more.
Hello Damir,
Nice implementation on the direct injectors, to scale cranking pulse width a lot more use Anytrim in (crank_pw) mode this allows upto 697% scaling. Also a combination of Anytrims can produce a much higher percentage.
Required factor scaling from pressure alone: sqrt(120/3) = 6.32 (not taking fuel temp into account) should be quite doable. - DB
Help and details: http://vems.hu/vt/help/v3/v3_anytrim_control.html
.. Problem is that after cranking(so more than 400rpm) fuel pressure isn't 120 bar. It takes few seconds to reach 120 bar. So changing only crank pulses isn't enough. Better way is change scale of fueltrim.
And injectors request 80V for opening, but i solved that. Here is trace at wot(0.1bar of boost) at 1500rpm.
