Fuel injection pump having filter

Details Fuel injection pump having filter Fuel injection pump having filter

2007-06-26

2007-06-26

Moulis, Thomas (Department: 3747)

Internal-combustion engines

Charge forming device

Fuel injection system

Reexamination Certificate

active

10909306

ABSTRACT:
A fuel injection pump includes a cam rotating with a camshaft, a cam ring revolving around the camshaft, a housing, plungers for pressurizing and pressure-feeding fuel drawn into fuel pressurizing chambers, and a rotary pump for supplying the fuel to the fuel pressurizing chambers. The housing includes a first housing portion for rotatably housing the rotary pump and second housing portions for housing the plungers so that the plungers can reciprocate. A filter is disposed in one of an outlet portion of a first low-pressure fuel passage in the first housing streaming the fuel from the rotary pump toward the fuel pressurizing chamber, an inlet portion of a second low-pressure fuel passage of the second housing portion facing the outlet portion, and a certain point in the second low-pressure fuel passage.

REFERENCES:
patent: 6053712 (2000-04-01), Konishi et al.
patent: 6190139 (2001-02-01), Isozumi et al.
patent: 6289875 (2001-09-01), Shinohara et al.
patent: 6293296 (2001-09-01), Konishi et al.
patent: 6311725 (2001-11-01), Hamada et al.
patent: 6887388 (2005-05-01), Winn et al.
patent: 199 13 774 (2000-10-01), None
patent: 2002-89411 (2002-03-01), None
patent: 2002-250459 (2002-09-01), None
patent: 2002-364480 (2002-12-01), None
EPO Examination Report dated Mar. 21, 2006.
Chinese Office Action dated Nov. 3, 2006 with translation.
EPO Examination Report dated Nov. 27, 2006.

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