Title:
FUEL PRESSURE PULSATION REDUCTION MECHANISM AND HIGH-PRESSURE FUEL SUPPLY PUMP OF INTERNAL COMBUSTION ENGINE WITH THE SAME
Document Type and Number:
Japanese Patent JP2015083841
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To prevent component deficiency or erroneous assembly by reducing the number of components during work for assembling a metal diaphragm damper into a low-pressure fuel passage.SOLUTION: A pressure pulsation reduction mechanism comprises a pair of metal dampers in which two disc-like metal diaphragms are joined over all the circumference and a sealed space is formed inside of a junction part. Gas is sealed in the sealed space of the damper, a pair of pressing members are included for giving pressure to both outer surfaces of the metal dampers at a position closer to an inner diameter than the junction part. The pair of pressing members are made into a unit by being coupled while holding the metal dampers therebetween.
Inventors:
USUI SATOSHI
TAMURA SHINGO
MIYAZAKI KATSUMI
TAKAHASHI SUNAO
SUGANAMI MASAYUKI
HASHIDA MINORU
TAMURA SHINGO
MIYAZAKI KATSUMI
TAKAHASHI SUNAO
SUGANAMI MASAYUKI
HASHIDA MINORU
Application Number:
JP2015016282A
Publication Date:
April 30, 2015
Filing Date:
January 30, 2015
Export Citation:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD
International Classes:
F02M55/00; F02M37/00; F02M55/02; F02M55/04; F02M59/44; F04B11/00
Domestic Patent References:
| JP2009264239A | 2009-11-12 | |||
| JP2005042554A | 2005-02-17 | |||
| JP2006521487A | 2006-09-21 | |||
| JP2004138071A | 2004-05-13 |
Attorney, Agent or Firm:
Manabu Inoue
Yuji Toda
Yuji Toda