Control method for common rail fuel pump and apparatus for performing the same

Control method for common rail fuel pump and apparatus for performing the same

  • CN 101,994,575 A
  • Filed: 08/18/2010
  • Published: 03/30/2011
  • Est. Priority Date: 08/18/2009
  • Status: Active Application
First Claim
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1. one kind is used for the controlling method that control comprises the fuel oil pump assembly of a plurality of pump elements (10), described a plurality of pump element is used for high pressure fuel is sent to the rail volume, each pump element (10) comprises plunger (12) and control valve (20), described plunger by the cam drive that is associated to carry out at least one pumping events in each engine revolution, and described control valve is used for the fuel oil stream that control entered and/or flowed out pump chamber (14), each pumping events is corresponding to the cam lobe that is associated of the cam that is associated, this method comprises, each pumping events for each pump element, in response to the described control valve (20) of controlling described pump element (10) from the output control signal (52a-52f, 114) of at least one pumping events acquisition formerly;

  • Wherein said output control signal (52a-52f,

         114) draws by following;

    The fuel pressure of measurement within described rail volume records rail pressure value (42) to draw;

    Relatively this records rail pressure value (42) and requires rail pressure value (46) to draw rail pressure error (102);

    To this rail pressure error (102) execution ratio and integral and calculating with the proportional (104) that draws this rail pressure error (102) and the integral (110) of this rail pressure error (102);

    AndIn conjunction with this proportional (104) and this integral (110) to draw described output control signal (52a-52f,

         114).

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