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Title:
SOLENOID VALVE, HIGH-PRESSURE PUMP, AND ENGINE SYSTEM
Document Type and Number:
WIPO Patent Application WO/2019/207908
Kind Code:
A1
Abstract:
The objective of the present invention is to provide a solenoid valve with which erosion can be suppressed, and with which a reduction in the number of components and a reduction in size compared with the past can be achieved, and a high-pressure pump and an engine system provided with the solenoid valve. To this end, a solenoid valve 100 is provided with: a rod 130 which opens and closes a liquid outlet 102; a movable core 140 which engages with the rod 130 and moves in conjunction with the rod 130; a fixed core 150 which attracts the movable core 140 by means of magnetism to move the rod 130 away from the outlet 102; a coil 104 which causes the fixed core 150 to generate magnetism; and a rod urging member 105 which is accommodated in a recessed portion 151 provided in the fixed core 150 and which urges the rod 130 toward the liquid outlet 102. The fixed core 150 includes a hard portion 152 having a higher hardness than a base material of the fixed core 150, in a surface layer portion of an inner wall of the recessed portion 151.

Inventors:
NAKAI Hirotaka (2520, Takaba, Hitachinaka-sh, Ibaraki 03, 〒3128503, JP)
UCHIYAMA Yasuhisa (2520, Takaba, Hitachinaka-sh, Ibaraki 03, 〒3128503, JP)
TAKAOKU Atsushi (2520, Takaba, Hitachinaka-sh, Ibaraki 03, 〒3128503, JP)
Application Number:
JP2019/005052
Publication Date:
October 31, 2019
Filing Date:
February 13, 2019
Export Citation:
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Assignee:
HITACHI AUTOMOTIVE SYSTEMS, LTD. (2520, Takaba Hitachinaka-sh, Ibaraki 03, 〒3128503, JP)
International Classes:
F02M59/36; F02M59/44; F04B53/10; F16K31/06
Foreign References:
JP2017031903A2017-02-09
JP2014136966A2014-07-28
JP2012136994A2012-07-19
JP2014167264A2014-09-11
JP2015190532A2015-11-02
JP2013100756A2013-05-23
JPH0885851A1996-04-02
JP2017066956A2017-04-06
Attorney, Agent or Firm:
TODA Yuji (6-1, Marunouchi 1-chome, Chiyoda-k, Tokyo 20, 〒1008220, JP)
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