Structure of fuel injection pump for extending service life

Details Structure of fuel injection pump for extending service life Structure of fuel injection pump for extending service life

2006-12-26

2006-12-26

Lopez, F. Daniel (Department: 3745)

Expansible chamber devices

Relatively movable working members

Interconnected with common rotatable shaft

Reexamination Certificate

active

07152518

ABSTRACT:
An improved wear resisting structure of a fuel injection pump is provided. The fuel injection pump has a plunger reciprocating to pressurize fuel within a compression chamber and a cam mechanism installed on a torque input shaft. The cam mechanism revolves following rotation of a torque input shaft to move the plunger. Washers are installed fixedly within washer chambers formed in an inner wall of the housing. The washers work as bearing surfaces which are in contact with and holds the cam mechanism from moving in an axial direction thereof, thereby avoiding excessive wear of portions of the housing.

REFERENCES:
patent: 5183340 (1993-02-01), Higginbotham et al.
patent: 6289875 (2001-09-01), Shinohara et al.
patent: 2001/0015200 (2001-08-01), Mori
patent: 2001-227426 (2001-08-01), None

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