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Fuel Pressure Regulator

Discussion in 'General Tech and Maintenance' started by reckedracing, May 26, 2006.

  1. reckedracing

    reckedracing TTIWWOP VIP

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  2. smarty009

    smarty009 Senior Member

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    well...it is the last thing the fuel gets to on the way out of the engine compartment...so im thinking you are right
     
  3. hosmer

    hosmer I made the millionth post VIP

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    but..it controls the amount of pressure behind it in the fuel rail, which I guess could be called the "inlet" to the combustion chamber...




    ?
     
  4. reckedracing

    reckedracing TTIWWOP VIP

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    ah, automotives have as much theory behind em as anything else...
     
  5. MikeBergy

    MikeBergy Blah blah blah....

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    It's true. Fuel rail pressure is regulated by the FPR. It, however, has nothing to do with the inlet to the combustion chamber, as fuel is injected into the intake charge at the entrance to the intake ports.

    The fuel pressure on the exit side of the FPR is whatever the total head generated by the fuel pump minus whatever the FPR is set at. This varies depending on the pulsewidth of the injectors at any instance in time dependent on the settings of the fuel map...
     
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