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. 15, 2003
Filed:
Apr. 30, 2001
Yoshihiko Onishi, Tokyo, JP;
Kouichi Ojima, Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A variable delivery fuel supply device capable of improving linearity of discharge characteristics with respect to a rotational angle of a cam and reducing abrasion of the cam. The variable delivery fuel supply device comprises: fuel injection valves to respectively for injecting a fuel to cylinders of an internal combustion engine; a delivery pipe for supplying a pressurized fuel to said fuel injection valves to ; and a fuel pump for taking a fuel from a fuel intake passage through an intake valve into a pressurization chamber during an intake stroke, for pressurizing the fuel and for discharging the pressurized fuel through a discharge valve to the delivery pipe during a discharge stroke by reciprocating movement of a plunger in each cylinder from a bottom dead point to a top dead point; wherein the pressure in the pressurization chamber is relieved at a position set to a predetermined value before reaching the top dead point in the course of the discharge stroke in which the plunger of the fuel pump moves from the bottom dead point to the top dead point.