Pumps – Condition responsive control of drive transmission or pump... – Adjustable cam or linkage
Patent
1995-02-03
1996-12-03
Gluck, Richard E.
Pumps
Condition responsive control of drive transmission or pump...
Adjustable cam or linkage
417462, 123450, F02M 4114, F02D 116
Patent
active
055802230
ABSTRACT:
A distributor fuel injection pump for internal combustion engines having at least one pump piston, which is guided in a cylinder bore and defines a pump work chamber therein and whose axial feed stroke motion is produced by a cam drive having at least one roller running on an annular cam race; at least one part of the cam drive is rotated to adjust the supply onset of the pump piston. This adjusting device is integrated into the housing which contains the cam drive by providing that the adjustable cam ring has radially protruding pressure vanes, each of which protrudes into a pressure chamber in the pump housing and divides this chamber into two pressure subchambers. Rotating the cam ring for the purpose of adjusting the supply onset of the pump piston over a wide angular range can now be effected by imposing pressure in alternation upon these pressure subchambers, which act in opposition upon the pressure vanes or the cam ring.
REFERENCES:
patent: 3940949 (1976-03-01), Ohki
patent: 4032260 (1977-06-01), Bosch
patent: 4037574 (1977-07-01), Swift
patent: 4564341 (1986-01-01), Tanaka
patent: 4710106 (1987-12-01), Iwata et al.
Gluck Richard E.
Greigg Edwin E.
Greigg Ronald E.
Robert & Bosch GmbH
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