Electromagnetic Fuel Injection Valve

Abstract: Provided is an electromagnetic fuel injection valve that, even if shrinkage strain accompanied by cooling after welding of a nonmagnetic cylindrical body (6) and a magnetic cylindrical boy (4) occurs in the magnetic cylindrical body (4), does not require post-processing without being affected by the occurrence of the shrinkage strain. A sliding guide surface (49) that guides sliding of a movable core (12) is provided on an inner peripheral surface of the nonmagnetic cylindrical body (6), while a tapered surface (50) that has a large diameter toward a rear end side thereof is provided from a middle part to a rear end thereof is provided on an inner peripheral surface facing the movable core (12) of the magnetic cylindrical body (4).

Patent Information

Application #

Filing Date

13 December 2023

Publication Number

01/2024

Publication Type

INA

Invention Field

MECHANICAL ENGINEERING

Status

Email

Parent Application

Applicants

HITACHI ASTEMO, LTD.

2520, Takaba, Hitachinaka-shi, Ibaraki 3128503

Inventors

1. MIURA Yudai

c/o Hitachi Astemo, Ltd., 2520, Takaba, Hitachinaka-shi, Ibaraki 3128503

Specification

Documents

Application Documents

#	Name	Date
1	202347084980-TRANSLATIOIN OF PRIOIRTY DOCUMENTS ETC. [13-12-2023(online)].pdf	2023-12-13
2	202347084980-STATEMENT OF UNDERTAKING (FORM 3) [13-12-2023(online)].pdf	2023-12-13
3	202347084980-PROOF OF RIGHT [13-12-2023(online)].pdf	2023-12-13
4	202347084980-PRIORITY DOCUMENTS [13-12-2023(online)].pdf	2023-12-13
5	202347084980-FORM 18 [13-12-2023(online)].pdf	2023-12-13
6	202347084980-FORM 1 [13-12-2023(online)].pdf	2023-12-13
7	202347084980-DRAWINGS [13-12-2023(online)].pdf	2023-12-13
8	202347084980-DECLARATION OF INVENTORSHIP (FORM 5) [13-12-2023(online)].pdf	2023-12-13
9	202347084980-COMPLETE SPECIFICATION [13-12-2023(online)].pdf	2023-12-13
10	202347084980-FORM-26 [19-01-2024(online)].pdf	2024-01-19
11	202347084980-FORM 3 [24-05-2024(online)].pdf	2024-05-24