Hydraulic control system of a continuously variable transmission

Details Hydraulic control system of a continuously variable transmission Hydraulic control system of a continuously variable transmission

1991-12-27

1993-08-03

Bui, Thuy M.

Endless belt power transmission systems or components

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

Fluid pressure actuator for adjustment of member

474 18, F16H 5900

Patent

active

052324060

ABSTRACT:
A control valve in an automatic transmission is operated by a solenoid-operated relief valve. A flow rate of the oil through the control valve is calculated. A correcting value is calculated from the calculated flow rate so as to control pressure override of the relief valve to a predetermined value. A solenoid current applied to a solenoid of the relief valve is corrected with the calculated correcting value.

REFERENCES:
patent: 4673378 (1987-06-01), Tokoro et al.
patent: 4850935 (1989-07-01), Morimoto
patent: 4853858 (1989-08-01), Kumura
patent: 4923433 (1990-05-01), Tanaka et al.
patent: 5009129 (1991-04-01), Morimoto et al.

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