×

Variable delivery fuel supply device

  • US 6,209,522 B1
  • Filed: 06/14/2000
  • Issued: 04/03/2001
  • Est. Priority Date: 03/01/2000
  • Status: Expired due to Fees
First Claim
Patent Images

1. A variable delivery fuel supply device which comprises:

  • fuel injection valves for injecting fuel to respective cylinders of an internal combustion engine, a delivery pipe for supplying pressurized fuel into the fuel injection valves, a fuel pump which sucks fuel from a fuel intake port through an intake valve into a pressurizing chamber by a reciprocating action of a plunger in a cylinder and supplies the pressurized fuel into the delivery pipe through a discharge valve, an electromagnetic valve located in a relief passage communicating the pressurizing chamber of the fuel pump with the fuel intake port and is adapted to control a discharge quantity of the pressurized fuel by relieving the pressurized fuel in the pressurizing chamber into the fuel intake port at the time of opening the valve to thereby control a fuel pressure in the delivery pipe, control means capable of supplying a valve-opening signal to the electromagnetic valve, and a high pressure regulator for controlling a fuel pressure by relieving the pressurized fuel in a high-pressure fuel passage including the delivery pipe.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×