发明名称 |
High pressure fuel pump |
摘要 |
There is provided a high pressure fuel pump which includes a reliable fuel seal having a long durability and which can be produced at a relatively low cost. When a rotating shaft 4 is rotated to rotate a swash plate 7, such rotation is transmitted to a piston shoe guide plate 8 through a thrust ball bearing 9. Since the plate 8 is supported by a spherical portion 16 of a rod 14 mounted to a body 12, the plate 8 performs a precession to recurrently operate a plurality of fuel pumps 21 to 25 disposed around the rod 14. Each of the fuel pumps 21 to 25 includes a bellows provided between an outer end of the piston and the body 12, and the bellows completely seals a fuel leaked from a sliding clearance between the piston and the cylinder. Since the leaked fuel is introduced into a return passage 19 through a groove formed in an outer wall of the cylinder, a large internal pressure is not applied to the bellows and therefore, the bellows can be made of a low-priced material such as Teflon. <IMAGE> |
申请公布号 |
EP0879960(A3) |
申请公布日期 |
2000.03.22 |
申请号 |
EP19980109088 |
申请日期 |
1998.05.19 |
申请人 |
HONDA GIKEN KOGYO KABUSHIKI KAISHA |
发明人 |
SAITO, KATSUMI;KAMEDA, TOSHIHIRO;IITAKA, SATOSHI |
分类号 |
F04B1/16;F04B1/14;F04B53/04;F04B53/14 |
主分类号 |
F04B1/16 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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