High pressure fuel pumping apparatus

Details High pressure fuel pumping apparatus High pressure fuel pumping apparatus

1999-02-16

2000-10-17

Moulis, Thomas N.

Internal-combustion engines

Charge forming device

With fuel pump

123514, F02M 3704

Patent

active

061315494

ABSTRACT:
In a high pressure fuel pumping apparatus 3, a drain passage 12 for fuel having leaked from the inside of a fuel sealing metallic bellows 26, and another drain passage 13 for a high pressure fuel regulator 8 for regulating the pressure discharged from the high pressure fuel pumping apparatus are merged at a merging point. A lead type of check valve 17 is located upstream in the drain passage 12 between the merging point 14 and the fuel sealing metallic bellows 26, and a ball type of check valve 18 is located downstream in the drain passage 12.

REFERENCES:
patent: 4869219 (1989-09-01), Bremmer et al.
patent: 5709197 (1998-01-01), Oshidari et al.
patent: 5731515 (1998-03-01), Tominaga et al.
patent: 5832904 (1998-11-01), Morishita et al.
Patent Abstracts of Japan vol. 098, No. 011, Sep. 30, 1998 & JP 10 176625 A (Unisia Jecs Corp) Sep. 30, 1998.

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