motorcycle rev limiter

Discussion in 'The Projects Forum' started by yougarage, Mar 4, 2011.

  1. yougarage

    Thread Starter New Member

    Nov 29, 2010
    16
    0
    Hello! I'm new in electronics and I'm working on this project, a rpm limiter for my motorcycle.
    I need to "cut" the injectors common positive supply so I designed this simple circuit. It is in normally closed configuration because if the microcontroller fails the engine won't stop.
    the supply can range from 6v to 26 v because I want to power the board from another power supply, but the ground is shared.
    I also arranged a flyback diode to protect the mosfet against the spikes coming back from the injectors.
    Do you think this could work? I don't know what value could be good for r1 and r2.
    the mosfet is a pnp FQPF17P06
    Forgive me for the sloppy scheme...
     
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