Electro-hydraulic control system for a dual-pass continuously va

Details Electro-hydraulic control system for a dual-pass continuously va Electro-hydraulic control system for a dual-pass continuously va

1989-12-08

1991-07-16

Herrmann, Allan D.

Machine element or mechanism

Rotary member or shaft indexing, e.g., tool or work turret

Preselected indexed position

74866, 474 8, 474 28, F16H 5556, F16H 6308

Patent

active

050314815

ABSTRACT:
A control system for controlling hydraulic pressure in a dual pass continuously variable transmission includes a pump to provide primary and secondary hydraulic pressures for regulating the pulley ratio and belt tension. A minicomputer regulates the primary and secondary pressures, and a transition mechanism alternates the paths of the primary and secondary pressures between first and second pulleys of the transmission so that the primary pressure is fed to the drive pulley and the secondary pressure is fed to the driven pulley.

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