Planetary gear transmission for motor vehicle

Details Planetary gear transmission for motor vehicle Planetary gear transmission for motor vehicle

1989-11-17

1991-04-16

Bonck, Rodney H.

Planetary gear transmission systems or components

Electric or magnetic drive or control

Plural power paths

475280, 475285, F16H 5710

Patent

active

050078879

ABSTRACT:
A transmission including a first and a second single-pinion planetary gear unit and a third double-pinion planetary gear unit, which are coaxially disposed so as to provide different speed reduction ratios. The three gear units have respective first, second and third sun gears, respective first, second and third planetary gears, respective first, second and third ring gears, and respective first, second and third carriers. The first and second sun gears are fixed to each other for rotation as a unit, or connectable to each other by a coupling device. The first carrier and the second ring gear are fixed to each other or connectable by a coupling device. The first and third ring gears are fixed to each other or connectable to each other by a coupling device. The second and third carriers are fixed to each other or connectable by a coupling device. This arrangement allows shifting operations of the transmission, without racing of the engine or locking of the transmission.

REFERENCES:
patent: 3811343 (1974-05-01), Mori et al.
patent: 3946624 (1976-03-01), Murakami et al.
patent: 3971267 (1976-07-01), Murakami et al.
patent: 4007648 (1977-02-01), Bookout
patent: 4528869 (1985-07-01), Kubo et al.
patent: 4660439 (1987-04-01), Hiraiwa

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