Automatic transmission

Details Automatic transmission Automatic transmission

1992-07-23

1993-07-27

Wright, Dirk

Planetary gear transmission systems or components

With means to vary drive ratio or disconnect drive

Plural elements selectively braked

F16H 362

Patent

active

052306712

ABSTRACT:
An automatic transmission includes a planetary gear system which are coaxially mounted on an intermediate shaft having a first end supported by an input shaft and a second end supported by an output shaft. For example, the planetary gear system includes three planetary gear sets which are all mounted on the intermediate shaft, and an engaging device group includes a combination of first and second clutches and a first brake which are all placed around the input shaft, and a combination of second and third brakes which are placed around the planetary gear sets. The three planetary gear sets are tightly arranged, leaving little or no intervening spaces, between both ends of the intermediate shaft. No clutches and brakes are interposed among the planetary gear sets. Therefore, it is possible to decrease the length of the intermediate shaft, and to reduce gear noises by improving the flexural rigidity of the intermediate shaft.

REFERENCES:
patent: 3941013 (1976-03-01), Miller
patent: 3996817 (1976-12-01), Winzeler
patent: 4046031 (1977-09-01), Ott et al.
patent: 4089238 (1978-05-01), Forster et al.
patent: 4172393 (1979-10-01), Miller
patent: 4683776 (1987-08-01), Klemen
patent: 4935872 (1990-06-01), Benford et al.
patent: 5106352 (1992-04-01), Lepelletier
Nissan Repair Manual (L4N71B and E4N71B), 1982, p. 7.
Toyota Repair Manual (A340E), 1985.
Toyota Repair Manual (A540H).
Jaguar XJ6 Repair Manual (ZF4HP-22), p. 44-2.

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