Configuration PWM for Bordcomputer possible? Consumption signal

[Reini1977]

hi

want to get the Bordcomputer on my Audi 200 full working..

Therefore i would need a "Verbrauchssignal" that is a PWM with variable Dutycycle...the longer the injector stay open, the longer is the high phase

can this be configured in VEMS tune...and if yes, which pin?

regards


Reinhold

[Kamuto]

hi

want to get the Bordcomputer on my Audi 200 full working..

Therefore i would need a "Verbrauchssignal" that is a PWM with variable Dutycycle...the longer the injector stay open, the longer is the high phase

can this be configured in VEMS tune...and if yes, which pin?

regards


Reinhold

any pin use sec pwm table for that

[Reini1977]

thank you very much...

PWM duty cycle map vs rpm...should give a perfect load signal

[Kamuto]

thank you very much...

PWM duty cycle map vs rpm...should give a perfect load signal

it may need some pullup to 12v or some capacitor on output but in general it should work

[Reini1977]

update

i tested the Bordcomputer with a consumption signal , generated with a function generator...

the calculation for consumption depends only on duty cycle, varied frequency between 50 Hz and 500Hz, makes no difference

i will make a small pcb with an IXDD604 and pull up at IN, so VEMS dont see a lot of load, and i have a nice strong signal for my cluster

thank you for the productive discussion

[msh]

There is thread about fuel consumption signal in S2 forum, where someone said that BC of B3/B4 doesn't care if input signal has PWM signal or analog 0 - 5v signal. IIRC I've read somewhere, but doesn't remember where, that on the inside of BC the signal is filtered down to analog signal anyway. Makes no wonder actually, as both B3/B4 BC and C3 BC could be hooked up to both PWM signal from sophisticated enough ECU, or could be hooked up to potentiometer attached to K-jet potentiometer [KV or 10vt engine].