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:
Feb. 11, 2020
Filed:
Jan. 12, 2016
Hitachi Automotive Systems, Ltd., Hitachinaka-shi, Ibaraki, JP;
Yoshinobu Arihara, Hitachinaka, JP;
Takashi Okamoto, Hitachinaka, JP;
Hitachi Automotive Systems, Ltd, Hitachinaka-shi, JP;
Abstract
Provided is a high-pressure fuel supply device for an internal combustion engine, said device being capable of suppressing noise from collisions of a plunger rod and an air intake valve. A high-pressure fuel pumpcomprises an intake valve, a plunger rod that is formed as a separate element from the intake valve, an elastic member that biases the plunger rod in the valve-opening direction of the intake valve, and a solenoid that draws the plunger rod in the valve-closing direction of the intake valve when supplied with electricity. A control devicehas a first control unit that applies a first current to the solenoid in order to close the intake valve, and a second control unit that applies a second current to the solenoid before the plunger rod collides with the intake valve due to the biasing force of the elastic member.