Powertrain for 5-speed automatic transmissions

Details Powertrain for 5-speed automatic transmissions Powertrain for 5-speed automatic transmissions

1997-12-29

1999-11-23

Wright, Dirk

Planetary gear transmission systems or components

With means to vary drive ratio or disconnect drive

Plural elements selectively braked

475276, 475282, 475286, F16H 344

Patent

active

059891483

ABSTRACT:
Disclosed is a powertrain used for a 5-speed automatic transmission. The powertrain includes a first compound planetary gearset and a second compound planetary gearset. The first compound planetary gearset comprises first and second simple planetary gearsets having first, second, third, and fourth operating elements, while the second compound planetary gearset comprises third and fourth simple planetary gearsets having fifth, sixth, seventh, and eighth operating elements. One of the fifth to eighth operating elements are fixedly connected to one of the first to fourth operating elements, one of the fifth to eighth operating elements are variably connected to two of the first to fourth operating elements, and one of the fifth to eighth operating elements operates as an output element. Clutches are disposed to variably connect the operating elements of the first and second compound planetary gearsets. A brake is interposed between at least one of the operating elements of the first and second compound planetary gearsets to a transmission housing.

REFERENCES:
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patent: 5246409 (1993-09-01), Flemming et al.
patent: 5579883 (1996-12-01), Tsukamoto et al.

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