Apparatus for controlling a direct drive clutch for a vehicle au

Details Apparatus for controlling a direct drive clutch for a vehicle au Apparatus for controlling a direct drive clutch for a vehicle au

1980-07-31

1985-04-02

Herrmann, Allan D.

Machine element or mechanism

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

Preselected indexed position

74862, 74865, 74731, 192 331, B60K 4106, F16H 4700

Patent

active

045079854

ABSTRACT:
An automatic transmission includes a torque converter with a direct drive clutch and at least one planetary gear unit, and is controlled electronically. The engagement of the direct drive clutch is controlled, independently of a first relation between the vehicle speed and the engine torque to perform shifting, on the basis of a second relation between the vehicle speed and the engine torque. The direct drive clutch can be engaged in each forward running shift postion, and is disengaged at the time of shifting for a predetermined time. Line pressure from a main regulator valve is modulated when the direct drive clutch is engaged.

REFERENCES:
patent: 3693478 (1972-09-01), Malloy
patent: 4027554 (1977-06-01), Ito et al.
patent: 4160392 (1979-07-01), Sunohara et al.
patent: 4208929 (1980-06-01), Heino et al.
patent: 4262335 (1981-04-01), Ahlen et al.
patent: 4263822 (1981-04-01), Harmon
patent: 4270636 (1981-06-01), Sunohara et al.

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