System for controlling the pressure of oil for a continuously va

Details System for controlling the pressure of oil for a continuously va System for controlling the pressure of oil for a continuously va

1988-04-25

1990-02-06

Wright, Dirk

Machine element or mechanism

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

Preselected indexed position

B60K 4112

Patent

active

048980501

ABSTRACT:
A continuously variable transmission has a torque converter with a lockup clutch. A high pressure oil pump is provided adjacent the transmission and a low pressure oil pump provided adjacent the torque converter. A line pressure control valve is provided for controlling the pressure of oil supplied from the high pressure oil pump to produce a line pressure for operating the transmission. Another control valve is provided for controlling the pressure of oil supplied from the low pressure oil pump and for supplying the controlled oil to the torque converter and the lockup clutch, for operations thereof.

REFERENCES:
patent: 4478105 (1984-10-01), Yamamura et al.
patent: 4718308 (1988-01-01), Haley
patent: 4733582 (1988-03-01), Eggert et al.

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