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Title:
HIGH PRESSURE FUEL SUPPLY PUMP OF INTERNAL COMBUSTION ENGINE
Document Type and Number:
Japanese Patent JP2014148981
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
Application Number:
JP2014109661A
Publication Date:
August 21, 2014
Filing Date:
May 28, 2014
Export Citation:
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Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD
HITACHI CAR ENG CO LTD
International Classes:
F02M59/34; F02M59/20; F02M59/36; F02M59/46; F02M63/02; F04B15/08; F04B49/24
Domestic Patent References:
JPH09112731A1997-05-02
JPS54122214U1979-08-27
JPS63154763U1988-10-11
JPS4935426U1974-03-28
JPS5198430A1976-08-30
JPS57193756A1982-11-29
JPH01310165A1989-12-14
JPH05172268A1993-07-09
JPH0658218A1994-03-01
JPH0827543A1996-01-30
JPH08511845A1996-12-10
JP2690734B21997-12-17
JPH10141177A1998-05-26
JPH10153157A1998-06-09
JP2002521615A2002-07-16
JP2002521616A2002-07-16
JP2002521615A2002-07-16
JP2002521616A2002-07-16
JPH09112731A1997-05-02
JPS5362022A1978-06-03
JPS5923059A1984-02-06
JPS4935426U1974-03-28
JPS5198430A1976-08-30
JPS57193756A1982-11-29
JPH01310165A1989-12-14
JPH05172268A1993-07-09
JPH0658218A1994-03-01
JPH0827543A1996-01-30
JPH08511845A1996-12-10
JP2690734B21997-12-17
JPH10141177A1998-05-26
JPH10153157A1998-06-09
JPS54122214U1979-08-27
JPS63154763U1988-10-11
JP2006200407A2006-08-03
JP2006307880A2006-11-09
JP2013164079A2013-08-22
Foreign References:
WO2000047888A12000-08-17
Attorney, Agent or Firm:
Manabu Inoue



 
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