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Mechanical returnless fuel system

  • US 20050081826A1
  • Filed: 10/16/2003
  • Published: 04/21/2005
  • Est. Priority Date: 10/16/2003
  • Status: Active Grant
First Claim
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1. A method for operating an automotive engine comprising fuel injectors that open to deliver fuel to the engine, said method compr sing:

  • providing a mechanical returnless fuel system for supply ng fuel to the fuel injectors and including a fuel pump having a pump output;

    providing a controller for regulating a opening time for the fuel injectors to deliver a precise quantity of fuel;

    returning a portion of said pump output to the fuel supply;

    determining a projected engine fuel demand;

    determining an estimated fuel pressure of said mechanical returnless fuel system based upon the projected engine fuel demand; and

    determining an opening time for said fuel injectors based upon the estimated fuel pressure.

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