Gear train for a 6-speed automatic transmission used in vehicles

Details Gear train for a 6-speed automatic transmission used in vehicles Gear train for a 6-speed automatic transmission used in vehicles

1997-08-28

1999-11-30

Marmor, Charles A.

Planetary gear transmission systems or components

With means to vary drive ratio or disconnect drive

Plural elements selectively braked

475290, 475903, F16H 362

Patent

active

059933470

ABSTRACT:
A gear train for 6-speed automatic transmissions used in vehicles includes a compound planetary gear set, realized through combining first and second planetary gear sets in a radial direction, the second simple planetary gear set being enclosed by a ring gear of the first simple planetary gear set, the ring gear able to act as a sun gear for the second simple planetary gear set, and having five operational elements. A clutch assembly is mounted between at least three of the five operational elements of the compound planetary gear set and an input shaft, and operates to select the operational elements to be input elements. A brake assembly is mounted between at least three of the five operational elements of the compound planetary gear set and a transmission housing, and operates to select the operational elements to be reaction elements.

REFERENCES:
patent: 2478869 (1949-08-01), Hasbany
patent: 3999448 (1976-12-01), Murakami et al.
patent: 4027551 (1977-06-01), Murakami et al.
patent: 4224838 (1980-09-01), Roushdy et al.
patent: 4229996 (1980-10-01), Hildebrand
patent: 4872376 (1989-10-01), Asada et al.
patent: 5429557 (1995-07-01), Beim

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