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].