Method of controlling continuously variable automotive transmiss

Details Method of controlling continuously variable automotive transmiss Method of controlling continuously variable automotive transmiss

1987-07-15

1990-08-21

Braun, Leslie A.

Machine element or mechanism

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

Preselected indexed position

74868, B60K 17356

Patent

active

049495968

ABSTRACT:
The transmission ratio of an automotive continuously variable transmission is controlled on the basis of the difference between a target rotational speed of the engine which is preset according to an indication of the driver's intention of acceleration or deceleration and a detected rotational speed of the engine. The gain of the rate of change of the transmission ratio is reduced as the detected rotational speed of the engine becomes higher, and the gain of the rate of change of the transmission ratio is increased as the detected rotational speed of the engine becomes lower. Alternatively, the gain of the rate of change of the transmission ratio is of a relatively small value when the detected rotational speed of the engine is equal to or higher than a preset speed, and the gain of the rate of change of the transmission ratio is of a relatively large value when the detected rotational speed of the engine is lower than said preset speed.

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