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:
Sep. 28, 1999
Filed:
Feb. 10, 1997
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A variable-discharge high pressure pump capable of facilitating the manufacturing and providing sufficient lubrication. The pump comprises a cam shaft provided with a cam surface by which a tappet displaces in accordance with the cam surface, a plunger connected to the tappet to reciprocate in accordance with the reciprocation of the tappet and accommodated in a cylindrical cylinder. Also included are a cylinder head having a contact surface brought into contact with one end surface of the cylinder. The cylinder head has a small-diameter recess portion made in the contact surface to be coupled to the cylinder and constitutes a pump chamber in conjunction with a head portion of the plunger. Further, the cylinder head holds a fuel introduction device for introducing external fuel into a fuel supply passage communicating with the pump chamber, a solenoid valve for opening and closing the fuel supply passage in accordance with an energization state thereto, and a fuel discharging device for discharging fuel compressed in the pump chamber. The cylinder is placed through a fixing device into contact with the cylinder head.