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:
Jun. 07, 2005
Filed:
Jun. 14, 2000
Yoshihiko Onishi, Tokyo, JP;
Masayasu Miyajima, Tokyo, JP;
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 supply without causing noises resulted from the operation of the electromagnetic valve or a defect of the strength of a supply passage for flowing fuel of low pressure, which comprises fuel injection valvesfor injecting fuel to respective cylinders of an internal combustion engine, a fuel pumpwhich sucks fuel from a fuel intake portthrough an intake valveinto a pressurizing chamberby a reciprocating movement of a plungerin a cylinderto pressurize the fuel and supplies the pressurized fuel into the fuel injection valvesthrough a discharge valve, a damper chamberhaving a pressure damper, which is communicated with the fuel passageat a position between the fuel intake portand the intake valvein the fuel pump, a relief passagefor communicating the pressurizing chamberwith the fuel passagein the fuel pumpand an electromagnetic valvefor opening and closing the relief passage, which is adapted to control an amount and a pressure of pressurized fuel to be supplied to the fuel injection valves by relieving pressurized fuel in the pressurizing chamberto the fuel passageat the time of opening the valve.