Position controller for a rotatable shaft

Details Position controller for a rotatable shaft Position controller for a rotatable shaft

1988-11-29

1989-10-10

Myhre, Charles J.

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

123508, F01L 134, F02M 3704

Patent

active

048724270

ABSTRACT:
The present invention is directed to a system for actuating a cam follower shaft to permit variable timing of the valving events or the unit injectors of an internal combustion engine. A rotatable cam follower shaft is subjected to continuous, alternating, oscillating torques. A clutch is disposed adjacent the shaft and is translatable to move from a disengaged position to an engaged position in which the clutch engages the shaft either directly or through roller bearings and separate inclined surfaces. When the clutch engages the shaft, it prevents rotation in a first direction while permitting rotation in a second direction until a positive stop is reached. When the clutch is disengaged from the shaft, the overall torques acting on the shaft rotate the shaft in the first direction until the shaft reaches another positive stop. The clutch is activated by a compression spring which is resisted by fluid pressures.

REFERENCES:
patent: 1980686 (1934-11-01), Kinsman
patent: 2772667 (1956-12-01), Nallinger
patent: 2880711 (1959-04-01), Roan
patent: 3861506 (1975-01-01), Dossier
patent: 3897760 (1975-08-01), Hisserich
patent: 3945221 (1976-03-01), Miokovic
patent: 4007815 (1977-02-01), Acre
patent: 4057220 (1977-11-01), Kudlacek
patent: 4206734 (1980-06-01), Perr et al.
patent: 4506635 (1985-03-01), Van Rinsum
patent: 4586329 (1986-05-01), Carlin

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