High-pressure fuel supply system using variable displacement fuel pump

High-pressure fuel supply system using variable displacement fuel pump

  • CN 1,952,381 A
  • Filed: 10/16/2006
  • Published: 04/25/2007
  • Est. Priority Date: 10/19/2005
  • Status: Active Application
First Claim
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1. , a kind of high-pressure fuel system possesses:

  • High pressure fuel pump, it has;

    be communicated with the suction path of fuel and ejection path the pressurized chamber, with the fuel pressure in the described pressurized chamber deliver to described ejection path pressure-producing part, be arranged on the ejection valve in the described ejection path and be arranged on normal close type solenoid valve in the described suction path, the fuel in the described pressurized chamber is compressed in the switch motion by described solenoid valve and the reciprocating action of described pressure-producing part;

    WithController, it to the valve opening signal of described solenoid valve with close valve signal, provides driving current to described solenoid valve according to the quantity of state computing of motor,Described controller constitutes during described valve opening solenoid valve, apply than close the response valve time short close valve signal, it is described that to close the response valve time be describedly to close behind the valve signal described solenoid valve and close the needed time before the valve from applying.

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