is it possible simple pulse width modulation

Reply #15 – December 11, 2006, 08:49:27 PM

Quote from: CougarSE;117982

So the answer to your question.. there is no simple pulse width modulation. :D

maybe,,,,maybe not. Im no expert

When i started the topic, i knew in the back of my mind that an RC time constant circuit was fantasy only. It was only a slight reality until the point where i started to draw in a common base transistor circuit with a common collector tied in with a triac and a relay here and there. Not having an AC source in a normal car readily available was problem one with RC time constants so it would require a short ciircuit in order to disharge the cap onto the Injector. It soon occured to me that i have deviated from SIMPLE.

I rethought and rethought and its apparent now that most of this has become possible and probable whereas in the front end of the topic it was just a fantasy.

I still dont really grasp the actual need for a tps,you lost me there.
As for the lag time that might be estimated during quick throttle applied, i guess that could be desgined in as a guy did on toohighpsi.com where he mounted a chevy injector in his air tube while under boost. There is a bunch of homemade stuff going on there. Besides, i hear a lot of people here with SEFI complaining about hesitation powered by the very device thats suppose to be the remedy for such instances. My hesitation whet away when i got rid of injector screens,, i could have replaced em im sure.

nevertheless, i think its been fun and it seems likely the whole thing here is fiction until it gives birth.,,but,, it probably would work just fine and suffer the same problems an eec controlled engine would without all the codes and dependant devices like ACT, IAC,MAP, BAP, TPS, MAF,, and so on.

Im not really sure how my CFI got away with the MAP not hooked up all those years and still got decent mileage ,,like 22hwy,, but it did. Also ,just fyi, the CFI fuel pres regulator is not vac operated so im guessing the vac operated FPR's are ever changing the presure???? im asking cause i dont know. If thats the case then its wierd how the FAUX sefi V6 compares to the CFI V6.
It would run without a map hooked up but you better by god not unplug the Air Charge Temp and the Coolant Temp Sensor or your not gonna get er started. Odd i say.
can anyone tell i dont really care too much for all the extra stuff but i do love fuel injection and its prinl.