Planetary gear system for automatic transmission

Details Planetary gear system for automatic transmission Planetary gear system for automatic transmission

1992-07-23

1994-05-03

Braun, Leslie A.

Planetary gear transmission systems or components

With means to vary drive ratio or disconnect drive

Plural elements selectively braked

475286, F16H 5900

Patent

active

053082958

ABSTRACT:
An automatic transmission includes first and second planetary gear sets, and a third planetary gear set which is closer to an output end of the transmission, and which is smaller in diameter than the first and second gear sets. One brake is disposed around the first and second planetary gear sets, and another brake has a pack of brake plates surrounding the smaller third planetary gear set. A transmission case is therefore made gradually smaller toward the output end. This planetary gear system makes it possible to arrange the brakes very compactly, and the tapered transmission case improves the rigidity of the automatic transmission.

REFERENCES:
patent: 3067632 (1962-12-01), Foerster et al.
patent: 3941013 (1976-03-01), Miller
patent: 3996817 (1976-12-01), Winzeler
patent: 4070927 (1978-01-01), Polak
patent: 4509389 (1985-04-01), Vahratian et al.
patent: 4683776 (1987-08-01), Klemen
patent: 4935872 (1990-06-01), Benford et al.
patent: 5055098 (1991-10-01), Umebayashi et al.
Nissan Repair Manual (L4N71B and E4N71B), 1982, p. 7.
Toyota Repair Manual (A340E), 1985.
Toyota Repair Manual (A540H).
Jaguar XJ6 Repair Manual (ZF4HP-22), pp. 44-2.
"Nissan Repair Manual, Nissan Automatic Transaxle RL4F03A Type", p. A-2, May 1989.

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