Title:
【発明の名称】高圧燃料供給ポンプ
Document Type and Number:
Japanese Patent JP2857139
Kind Code:
B1
Abstract:
A high-pressure fuel supply pump with high performance is capable of securely preventing a cylinder section from seizing up and also permits improved sealing performance to minimize the chance of fuel leakage. The high-pressure fuel supply pump has: a casing (48) having a cylindrical cavity (48a); a sleeve (40) which has a cylinder section (40a) and a fixing section (40c), one end thereof closer to the fixing section (40c) being abutted against the bottom of the cavity (48a); and a piston (53) which is disposed in the cylinder section (40a). The high-pressure fuel supply pump takes in fuel through an intake passage (36) by the reciprocation of the piston (53) into a fuel pressurizing chamber (52) to pressurize it, then discharges the pressurized fuel through a discharge passage (37) to forcibly feed it into a fuel injector of a cylinder injection engine. A cylindrical slit (40d) is provided between the cylinder section (40a) and the fixing section (40c) of the sleeve (40), and the fixing section (40c) is secured by being fastened toward the bottom of a cavity (48a) by a cylindrical fastening member (64) screwed to the cavity (48a).
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Inventors:
Keiichi Furusei
Good luck
Tatsuya Ikegami
Hidekazu Baba
Good luck
Tatsuya Ikegami
Hidekazu Baba
Application Number:
JP1889998A
Publication Date:
February 10, 1999
Filing Date:
January 30, 1998
Export Citation:
Assignee:
Mitsubishi Electric Corporation
International Classes:
F02M59/10; F02M59/44; F02M63/02; F04B1/04; F04B53/00; F04B53/16; (IPC1-7): F02M59/44; F02M59/48
Domestic Patent References:
| JP4735417A |
Attorney, Agent or Firm:
Soga Doteru (6 people outside)