Control process and control arrangement for a continuously varia

Details Control process and control arrangement for a continuously varia Control process and control arrangement for a continuously varia

1995-04-07

1996-07-30

Wright, Dirk

Interrelated power delivery controls, including engine control

Transmission control

Continuously variable friction transmission

F16H 5906, F16H 5914, B60K 4112

Patent

active

055406327

ABSTRACT:
This invention provides a method and apparatus for controlling a continuously variable speed transmission connected with an internal-combustion engine according to one or several characteristic control curves. A transmission ratio of the transmission is automatically set according to the position of a power control element. In order to be able to operate the internal-combustion at its consumption-optimal point, a "constant driving method" which requires only a low reserve of tractive force is detected, and transmission ratio is adjusted in response thereto, so that the internal-combustion engine is operated in its point of the lowest specific fuel consumption for the existing operating point of the vehicle.

REFERENCES:
patent: 4671138 (1987-06-01), Nobumoto et al.
patent: 4715258 (1987-12-01), Shigematsu et al.
patent: 4976170 (1990-12-01), Hayashi et al.

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