Hydraulic control system for automatic transmission used in vehi

Details Hydraulic control system for automatic transmission used in vehi Hydraulic control system for automatic transmission used in vehi

1999-07-30

2000-10-31

Marmor, Charles A

Interrelated power delivery controls, including engine control

Transmission control

Transmission controlled by engine

477158, F16H 6126

Patent

active

061394696

ABSTRACT:
A hydraulic control system includes a pressure regulator for controlling hydraulic pressure generated by an oil pump, the pressure regulator being realized through a pressure regulator valve; a pressure reducer realized through a reducing valve for maintaining pressure at a level lower than line pressure; a damper clutch controller for operating a damper clutch of a torque converter; a shift controller for forming shift modes, the shift controller being realized through a manual valve indexed with a select lever operated by a user; a hydraulic pressure controller for providing shift quality and shift responsiveness to enable smooth shifting; and a hydraulic pressure distributor for supplying suitable hydraulic pressures to first, second, third, fourth and fifth friction elements operating as input and reaction elements in each shift stage, the hydraulic pressure distributor being realized through a plurality of spool valves.

REFERENCES:
patent: 5536216 (1996-07-01), Jang
patent: 5540634 (1996-07-01), Jang et al.
patent: 5565000 (1996-10-01), Jang
patent: 5569116 (1996-10-01), Jang
patent: 5651751 (1997-07-01), Jang
patent: 5658218 (1997-08-01), Jang et al.
patent: 5658220 (1997-08-01), Jang

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