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Thread: M1031 to RV tug..

  1. #51
    4 Star General Keith_J's Avatar
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    For water injection, I will need two parameters, engine speed and throttle position, both with 0-5 volt analog output. The latter is easy, GM part 10137417 will fit in place of the throttle vacuum regulator (and will be needed for the eventual 4L80E).

    For engine speed, I am thinking of using the tach lead off the left alternator, then using an RC circuit after rectification, I should be able to construct a 0-5 volt signal proportional to engine speed..0 volt at idle, 5 volts at 3600 RPM.

    These two signals will then be fractionally summed (50% of throttle signal plus 50% of RPM) which will then determine the Snow 212 system mass flow rate in water. The fractions will probably need adjusting due to non-linear fuel rate plus volumetric efficiency losses with speed. Low speed high throttle might even need transmission kick down switch input.

    The Goldilock's perfection is bounded by two realities..too much water injection puts the fire out or worse. Too little water and the pistons melt (actually lose strength which is why the top ring rides in a steel channel cast into the crown).
    1986 M1031 SECM.
    1985 MEP 002A
    1974 MEP 026C, eventually converting to electric start.

  2. #52
    4 Star General Keith_J's Avatar
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    Next project is former military equipment related..I have a 28 volt 3kW DC generator (MEP 026A) which will be used to power the RV, using a 3kW inverter and a battery bank. Intend to use PLCs to start the generator when battery voltage drops below 24 volts, then once 28 volts is sensed at the breaker, an actuator closes the breaker. Once battery voltage is over 28.5, the breaker will open and the generator stopped.

    This will easily power the air conditioner on the RV and be a backup for the 1031's electrical system. This way the RV can stay cool while I am out on the trails with the 1031.
    1986 M1031 SECM.
    1985 MEP 002A
    1974 MEP 026C, eventually converting to electric start.

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  4. #53
    4 Star General Keith_J's Avatar
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    Switched the horn out to a high low Hella but those are too buzzy. So I am adding Kleinn dual air horns..using a relay so the Hella pair will be on by default, then a switch makes the Kleinns active. I have onboard air, just not always charged tank. I have to fix the leaks and will add another tank. This is the stock PTO powered air system.
    1986 M1031 SECM.
    1985 MEP 002A
    1974 MEP 026C, eventually converting to electric start.

  5. #54
    Sergeant Major Mad Texan's Avatar
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    I installed these and just made jumpers for the second horn... I like the sound! Chrome grill easily removes and the red faces the rad support. Easy upgrade!

    https://wolo-mfg.com/horns/electric-...axi-sound.html

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