Power transmitting system for a four-wheel drive motor vehicle

Details Power transmitting system for a four-wheel drive motor vehicle Power transmitting system for a four-wheel drive motor vehicle

1991-05-10

1993-10-19

Bonck, Rodney H.

Planetary gear transmission systems or components

Differential planetary gearing

Spur gear differential

475221, F16H 142, B60K 1734

Patent

active

052540529

ABSTRACT:
A complex central differential is provided for distributing the output of an automatic transmission to front and rear wheels of a motor vehicle. The complex central differential comprises a planetary gear device including a first sun gear operatively connected to an output shaft of the transmission, a carrier, first and second planetary pinions integral with each other and rotatably supported on the carrier, and a second sun gear, and a ring gear. The first planetary pinion is engaged with the first sun gear and with the ring gear, the second planetary pinion is engaged with the second sun gear. The carrier is operatively connected to either of the front wheels or the rear wheels and the second sun gear is operatively connected to the rear wheels. A brake is provided to prevent the ring gear from rotating when output speed of the transmission exceeds a predetermined speed in a first speed range of the transmission, thereby providing the lowest speed.

REFERENCES:
patent: 4215593 (1980-08-01), Shono et al.
patent: 4417642 (1983-11-01), Suzuki et al.
patent: 4862768 (1984-09-01), Iwatsuki et al.
patent: 5071396 (1991-12-01), Kobayashi
patent: 5080641 (1992-01-01), Kobayashi
patent: 5098351 (1992-03-01), Kobayashi
Marks' Standard Handbook for Mechanical Engineers.

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