Title:
HIGH PRESSURE FUEL SUPPLY PUMP OF INTERNAL COMBUSTION ENGINE
Document Type and Number:
Japanese Patent JP2015078705
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To improve a discharge capacity control mechanism of a high pressure fuel supply pump.SOLUTION: A high pressure fuel supply pump includes: a cylinder; a plunger for changing a capacity in the cylinder by reciprocating in the cylinder; a valve body provided on a downstream side of a through hole so as to open/close the through hole connecting the inside of the cylinder and a low pressure fuel passage; a first spring for energizing the valve body in a valve-opening direction; an engaging member installed on the low pressure fuel passage side, and operating the valve body to a releasing position against the force of the first spring; a second spring adding force against the force of the first spring to the engaging member; and an electromagnetic drive device for releasing the engaging member from an engagement state with the valve body against the force of the second spring.
Inventors:
YAMADA HIROYUKI
TAWARA SHIGENORI
SAITO JUNJI
TAKAHASHI YUKIO
ABE MASAMI
TAWARA SHIGENORI
SAITO JUNJI
TAKAHASHI YUKIO
ABE MASAMI
Application Number:
JP2015016308A
Publication Date:
April 23, 2015
Filing Date:
January 30, 2015
Export Citation:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD
HITACHI CAR ENG CO LTD
HITACHI CAR ENG CO LTD
International Classes:
F02M59/20; F02M59/02; F02M59/36; F02M59/46; F02M63/02; F04B15/08; F04B49/24
Domestic Patent References:
| JPH09112731A | 1997-05-02 | |||
| JPS4935426U | 1974-03-28 | |||
| JPH0658218A | 1994-03-01 | |||
| JPH04353262A | 1992-12-08 | |||
| JPH10141177A | 1998-05-26 | |||
| JPH08193670A | 1996-07-30 | |||
| JPS5362022A | 1978-06-03 | |||
| JPS5923059A | 1984-02-06 | |||
| JPH0712029A | 1995-01-17 | |||
| JPH08291792A | 1996-11-05 | |||
| JPH09250427A | 1997-09-22 |
Foreign References:
| DE4401073A1 | 1995-07-20 |
Attorney, Agent or Firm:
Manabu Inoue