The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 03, 2001
Filed:
Jun. 14, 2000
Yoshihiko Onishi, Tokyo, JP;
Masayasu Miyajima, Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A variable delivery fuel supply device capable of obtaining a stable fuel pressure even in a case of inoperability of an electromagnetic valve and capable of improving the durability of the electromagnetic valve, which comprises fuel injection valves,through,for injecting fuel to respective cylinders of an internal combustion engine, a delivery pipe,connected with the fuel injection valves,through,, a fuel pump,which sucks fuel from a fuel 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,, 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