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. 02, 2002
Filed:
Sep. 22, 2000
Abstract
An accumulator fuel injection system for controlling an injection rate according to the operating state of an engine comprises: a first accumulation chamber for containing high-pressure fuel supplied by a fuel supply pump a first electromagnetic valve device provided in a fuel passage which connects the first accumulation chamber with a fuel injection valve the first electromagnetic valve switching the fuel passage between a connected state or a disconnected state; a branch passage branched from the fuel passage at downstream side of the first electromagnetic device the branch passage having sufficiently lower constant fuel pressure than fuel pressure in the first accumulation chamber and a second electromagnetic valve device provided in a fuel return passage connecting the fuel injection valve with a fuel tank the second electromagnetic valve device switching fuel, which is injected from the fuel injection valve between an injected state and an uninjected state; and control means for opening the first electromagnetic valve device prior to the opening of the second electromagnetic valve device and then opening the second electromagnetic valve device