Hydraulic control system of 7-speed automatic transmission...

Details Hydraulic control system of 7-speed automatic transmission... Hydraulic control system of 7-speed automatic transmission...

2006-12-29

2009-11-24

Le, David D (Department: 3655)

Planetary gear transmission systems or components

Fluid drive or control of planetary gearing

Fluid controlled mechanical clutch or brake

C475S128000, C477S131000

Reexamination Certificate

active

07621836

ABSTRACT:
A hydraulic control system applicable to a power train of a seven-speed automatic transmission for a vehicle having six friction members. Enhanced overall performance is achieved by minimization of shift shock and an enhancement of fuel consumption as a consequence of achieving precise and effective control.

REFERENCES:
patent: 5667453 (1997-09-01), Jang et al.
patent: 7344466 (2008-03-01), Park

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