Title:
FUEL INJECTION PUMP
Document Type and Number:
Japanese Patent JP3838778
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To maintain a good sealing performance of a fuel injection pump for a long period of time by reducing the wear of an O-ring which is set between a pump body and a plunger barrel.
SOLUTION: A fuel injection pump is structured so that an O-ring 11 is set between a pump body 1 and a plunger barrel 2 for preventing the fuel in a gallery chamber 8 in communication with a pump chamber 3 from leaking through the gap between the pump body 1 and the plunger barrel 2 fitted therein, wherein a damper ring 20 for suppressing a pulsated pressure from inside the plunger barrel 2 acting on the O-ring 11 is interposed between the pump body 1 and plunger barrel 2.
Inventors:
Hiroaki Tsukahara
Masaru Kobayashi
Yuji Kobashi
Shinobu Sakuma
Egashira Takanori
Masaru Kobayashi
Yuji Kobashi
Shinobu Sakuma
Egashira Takanori
Application Number:
JP7470998A
Publication Date:
October 25, 2006
Filing Date:
March 23, 1998
Export Citation:
Assignee:
Yanmar Co., Ltd.
International Classes:
F02M59/44; (IPC1-7): F02M59/44
Domestic Patent References:
| JP5099097A | ||||
| JP10073163A | ||||
| JP58114878U | ||||
| JP6200853A |
Attorney, Agent or Firm:
Masahiro Nishimori