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:
Jan. 06, 1976
Filed:
May. 02, 1974
Tadashi Yamada, Suita, JA;
Toshio Banba, Takatsuki, JA;
Yanmar Diesel Engine Co., Ltd., Osaka, JA;
Abstract
A fuel injection pump for an internal combustion engine wherein a plunger is mounted in a barrel for sliding axial movement and rotation about its own axis, and the barrel is formed therein with a suction port and an outlet port. A metering groove is formed in the plunger and maintained in communication with a top of the plunger through a bore formed in the plunger, so that a desired amount of metered fuel can be delivered to the engine according to the load applied to the engine by varying the area and the time at which the metering groove is brought into communication with the outlet port, thereby varying the amount of fuel outflow. A pulsation control chamber of a greater sectional area is formed in the fuel passageway between a discharge valve of the pump and a fuel valve so as to intensify and prolong the duration of throbs of a pulsating current of fuel moved through the pulsation control chamber as it is delivered by pumping.