Electromagnetic fuel pump for a common rail fuel injection syste

Details Electromagnetic fuel pump for a common rail fuel injection syste Electromagnetic fuel pump for a common rail fuel injection syste

1995-09-12

1998-05-12

Gluck, Richard E.

Pumps

Expansible chamber type

Electrically or magnetically actuated distributor

123506, F02M 3704

Patent

active

057497176

ABSTRACT:
A pump for a fuel injection system, the pump primarily including a pump body having a pumping chamber and a pump body end portion, a control valve disposed in a control valve chamber, a reciprocatable plunger, and a cylindrical sleeve having first and second end portions. The first end portion of the sleeve interfits with the pump body end portion. The second end portion of the sleeve slidably interfits with a cam follower assembly for allowing the cam follower assembly to drive the plunger. The plunger is reciprocated with respect to the sleeve over a stroke range between an extended position and a retracted position. A plunger spring biases the plunger to the retracted position. The pump body end portion is press-fit into the first end portion of the sleeve, and sufficiently induces compressive forces in the pump body for acting on the pumping chamber to oppose pumping chamber expansive forces.

REFERENCES:
patent: 3779225 (1973-12-01), Watson et al.
patent: 4618095 (1986-10-01), Spoolstra
patent: 4619239 (1986-10-01), Wallenfang et al.
patent: 4782807 (1988-11-01), Takahashi
patent: 4829967 (1989-05-01), Nuti
patent: 5373828 (1994-12-01), Askew

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