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

2006-12-19

2008-11-18

Pang, Roger (Department: 3681)

Planetary gear transmission systems or components

With means to vary drive ratio or disconnect drive

Plural elements selectively braked

C475S313000, C475S325000

Reexamination Certificate

active

07452303

ABSTRACT:
An eight speed powertrain of an automatic transmission can realize eight forward speed and one reverse speed by combining four planetary gear sets combined by a plurality of clutches and brakes and power delivery performance can be improved and fuel consumption can be reduced.

REFERENCES:
patent: 6723018 (2004-04-01), Hayabuchi et al.
patent: 6960149 (2005-11-01), Ziemer
patent: 7179192 (2007-02-01), Park
patent: 7294087 (2007-11-01), Hayabuchi et al.

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