Control apparatus for automatic transmissions

Details Control apparatus for automatic transmissions Control apparatus for automatic transmissions

1983-03-10

1984-12-04

Herrmann, Allan D.

Machine element or mechanism

Rotary member or shaft indexing, e.g., tool or work turret

Preselected indexed position

74868, 74866, 74752A, 74752C, F16H 374, B60K 4108

Patent

active

044856954

ABSTRACT:
The automatic transmission control apparatus includes a single dual sequence valve in the hydraulic control circuit which provides timing control functions for engaging the brakes, engaging the brakes and one-way clutch, and operating the dual pistons operatively associated with the clutch, thereby preventing overheat of the friction engagement elements, improving the shifting of the gears through the speed range, and simplifying the hydraulic control circuit arrangement.

REFERENCES:
patent: 3593599 (1971-07-01), Dach
patent: 3683721 (1972-08-01), Uozumi et al.
patent: 3747439 (1973-07-01), Uozumi et al.
patent: 3968707 (1976-07-01), Dach
patent: 4008630 (1977-02-01), Murakami et al.
patent: 4129051 (1978-12-01), Shindo et al.
patent: 4143563 (1979-03-01), Shindo et al.
patent: 4148232 (1979-04-01), Moriya
patent: 4186627 (1980-02-01), Kuramochi
patent: 4334441 (1982-06-01), Iwanaga et al.
patent: 4346626 (1982-08-01), Kawamoto
patent: 4346627 (1982-08-01), Kawamoto et al.
patent: 4367812 (1983-01-01), Kobayashi et al.

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