Fuel injection pump

Details Fuel injection pump Fuel injection pump

1982-09-22

1984-06-05

Smith, Leonard E.

Pumps

Expansible chamber type

Pumping member position controlled port

74 55, 92129, 417501, F02M 5944

Patent

active

044525745

ABSTRACT:
The fuel injection pump of this invention proposes at least one cylinder, a piston, a drive rod, a guide sleeve for the drive means, a guide conduit embracing the guide sleeve, a restoring spring for the drive rod and piston, said piston being designed to execute a suction stroke under the influence of the restoring spring. The injection pump also comprises a locking mechanism comprising a bearing which extends into two recesses. The one recess is in the form of an annular groove located in the guide conduit. The other recess is a slot formed in the guide sleeve in its longitudinal direction. The locking mechanism prevents the guide sleeve together with the rod and piston from falling out after the injection pump has been assembled. The locking mechanism is inexpensive and easy to assemble because it requires only a single bearing in addition to already existing components of the injection pump.

REFERENCES:
patent: 1981913 (1934-11-01), Fielden
patent: 2547174 (1951-04-01), Rogers
patent: 2628866 (1953-02-01), Purchas, Jr. et al.
patent: 2890657 (1959-06-01), May et al.
patent: 2935878 (1960-05-01), Wirsching
patent: 3006556 (1961-10-01), Shade et al.
patent: 3027844 (1962-04-01), Kruk-Strzelecki
patent: 3276760 (1966-10-01), Last et al.

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