Cam loaded continuously variable transmission

Details Cam loaded continuously variable transmission Cam loaded continuously variable transmission

1991-01-07

1993-02-09

Luebke, Renee S.

Endless belt power transmission systems or components

Pulley with belt-receiving groove formed by drive faces on...

Load responsive

474 18, 474 28, F16H 912

Patent

active

051849810

ABSTRACT:
A continuously variable transmission utilizes a cam loading device with a hydraulically controlled CVT of the metal V-belt type. The cam loading device applies an axial loading force to the pulley flanges in proportion to the output torque. A hydraulic mechanism positions the pulley flanges to compensate for the limited axial movement of the cam mechanism. A preload spring and hydraulic cushion provide a necessary preload while cushioning shock from reversal of torque. The loading force on the CVT is permitted to vary with the output torque to provide improved efficiency for a full range of automotive driving conditions.

REFERENCES:
patent: Re33126 (1989-02-01), Wittke
patent: 3600960 (1971-08-01), Karig
patent: 3822610 (1974-07-01), Erban
patent: 4261213 (1981-04-01), Rattunde
patent: 4524642 (1985-06-01), Fritsch
patent: 4568317 (1986-02-01), Stever
patent: 4583423 (1986-04-01), Hahne
patent: 4601681 (1986-07-01), Costelli
patent: 4612003 (1986-09-01), Ohzono
patent: 4722718 (1988-02-01), Eugen
patent: 4735597 (1988-04-01), Cadee
Finally-CVT, Popular Science, Sep. 1987, pp. 56-59.

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