Hydraulic control system for continuously variable transmission

Details Hydraulic control system for continuously variable transmission Hydraulic control system for continuously variable transmission

1986-02-24

1987-12-15

Braun, Leslie

Machine element or mechanism

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

Preselected indexed position

74867, B60K 4118

Patent

active

047124539

ABSTRACT:
A control arrangement for a continuously variable transmission includes an electronic control system and a hydraulic control system. In the hydraulic control system solenoid valves are used in conjunction with fluid control valves to regulate the various fluid pressure levels in the system. A variable displacement pump provides fluid under pressure in the main line. A modulator valve, connected to the main line, provides a controlled low pressure to the various control assemblies. Thus the solenoid valve and associated components can be more economical than in those systems where only the normal line pressure arrangement is used.

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