Eight-speed powertrain of automatic transmission for vehicle

Details Eight-speed powertrain of automatic transmission for vehicle Eight-speed powertrain of automatic transmission for vehicle

2006-11-30

2009-10-27

Estremsky, Sherry L (Department: 3655)

Planetary gear transmission systems or components

With means to vary drive ratio or disconnect drive

Plural elements selectively braked

C475S277000

Reexamination Certificate

active

07608008

ABSTRACT:
A eight-speed powertrain of an automatic transmission for a vehicle combining four simple planetary gear set with a plurality of clutches and brakes to realize seventh forward speed or eighth forward speed and two reverse speeds can improve power delivery performance and reduce fuel consumption.

REFERENCES:
patent: 2005/0113205 (2005-05-01), Oguri et al.
patent: 1020050049374 (2005-05-01), None

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