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. 05, 2019
Filed:
Nov. 30, 2017
Denso Corporation, Kariya, Aichi-pref., JP;
Tomoji Matsukawa, Obu, JP;
Hiroyuki Inoue, Gifu, JP;
DENSO CORPORATION, Kariya, JP;
Abstract
A bush is disposed on an inner wall of a fixed core. A second spring, which biases a movable core in a valve-closing direction, has one end abutting the bush. The bush is formed separately from the fixed core, and is formed to be movable relative to the fixed core when adjusting a biasing force of the second spring. When a needle is abutting a valve seat, a gap is formed between a movable core first abutting face of the movable core and a flange end face of a flange portion included in the needle. Accordingly, during valve-opening, a relatively large force in a valve-opening direction is applied to the needle. Further, by changing the position of the bush relative to the movable core, the biasing force of the second spring may be adjusted without changing a length of the gap in a central axis direction.