Fuel injection pump for internal combustion engines

Details Fuel injection pump for internal combustion engines Fuel injection pump for internal combustion engines

1993-05-14

1994-05-03

Cross, E. Rollins

Internal-combustion engines

Charge forming device

With fuel pump

F02M 3704

Patent

active

053077784

ABSTRACT:
A fuel injection pump for internal combustion engines, having a pump piston that is axially guided in a cylinder bushing which defines a pump work chamber there and is moved axially by a cam drive counter to the force of a restoring spring. The cam drive comprises a roller tappet connected to the pump piston whose roller rolls off on a cam of a camshaft driven by the internal combustion engine to be supplied. In the process, the roller is connected to the cylindrical part of the roller tappet by means of a roller pin disposed vertically to the axis of the roller tappet. This roller pin is axially secured by means of the contact of its axial ends to the wall of a bore that guides the roller tappet, for which purpose the transition area between the face ends, which extend vertically to the axis of the roller pin, and the circumferential area of the roller pin is part of a circular ring. The radius of the circular ring cross-section is adapted to the diameter of the wall of the roller tappet guide.

REFERENCES:
patent: 3977370 (1976-08-01), Humphreys
patent: 4167926 (1979-09-01), Leblanc et al.
patent: 4617903 (1986-10-01), Heberle et al.
patent: 4842497 (1989-06-01), Hafele et al.
patent: 5022356 (1991-06-01), Morel, Jr. et al.

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