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Re-Programmable Performace 'Chip' for cars — Parallax Forums

Re-Programmable Performace 'Chip' for cars

wseibertwseibert Posts: 8
edited 2008-05-29 21:46 in General Discussion
Has anyone worked on using the BS2/Propeller chip as a programmable performace chip for cars yet?

I'm wondering if this is a feasible use for the chips.

I'm looking at having a chip 'read' the sensors in the car (O2, MAP, Temp, etc) and adjust those settings per some calculations (going over a set speed, adjust the fuel mixture down via sending pulses back through the sensors).

I've seen people selling 'manual' adjusters for this purpose, but thought, hey, why wouldn't a BS2 chip be able to do this on the fly instead of me turning a knob as i'm driving?

Ideas/Thoughts?

Comments

  • Agent420Agent420 Posts: 439
    edited 2008-05-29 17:24
    I'd say the issue is more one of logic and programming than chip ability.· Either of those chips are likely capable, but I would not underestimate the effort required to research all of the needed communication protocols, data parameters, timings and formulas / alogrithms.· Also give consideration to what damage could be done if there is an error somewhere.

    I don't know how applicable it may be, but have a peek at this thread...

    http://forums.parallax.com/showthread.php?p=725466









    Post Edited (Agent420) : 5/29/2008 5:37:57 PM GMT
  • wseibertwseibert Posts: 8
    edited 2008-05-29 19:45
    Interesting thread... sorta what i want, but not really...

    jaycar has some interesting items available, but i'm not 100% sure they'll work for what i'm looking at doing... most of their kits require manual tuning the adjustments for the engine. I'm looking at being able to have the chip think for itself and adjust as it sees fit (via the program loaded).

    I'm thinking of having a Accelerometer to measure the speed the car is traveling, read what the O2 and Map sensors voltages are at, and then calculate them together (with the engine temp) to determin what the fuel mixture should be. Once that is calculated, adjust the voltages on those sensors to the engines computer adjusts the fuel mixture to where it should be for that speed.

    I mainly want this to save fuel but to also allow future installment of a HHO generator in the car as well. When introducing a HHO generator, the engine starts to run cooler and the exhaust has more Oxygen in it as well, which the current O2 sensor will see and attempt to adjust for it. I want to be able to over come that plus get some more fuel mileage out of the engine without it as well.

    I know, seems a little much, but if i'm able to get 30-40 miles per gallon out of my 91 car, i'll be happy =)

    Thanks
  • FranklinFranklin Posts: 4,747
    edited 2008-05-29 21:46
    You will be hard pressed to do this with a stamp. The propeller might be enough but you also may need more than one processor working in tandem. Your first task is finding out what the port can give you and how you are going to connect to the controls. This should come first before you buy any hardware or do any programming.

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    - Stephen
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