Pulley actuating hydraulic pressure control for continuously var

Machine element or mechanism – Rotary member or shaft indexing – e.g. – tool or work turret – Preselected indexed position

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474 18, B60K 4112

Patent

active

048195146

ABSTRACT:
According to a hydraulic pressure control system for a continuously variable transmission embodying the present invention, a hydraulic fluid pressure supplied to pulleys is increased temporarily during a transient period where the transmission upshifts from a reduction ratio to a smaller reduction ratio as a result of a predetermined movement of a manual selector valve. The level of the hydraulic fluid pressure is allowed to return to the previous low level after the transient period.

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