Electronic control for a stepless vehicle transmission using a c

Details Electronic control for a stepless vehicle transmission using a c Electronic control for a stepless vehicle transmission using a c

1980-09-05

1983-06-14

Herrmann, Allan D.

Machine element or mechanism

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

Preselected indexed position

74867, 474 12, 474 18, B60K 4114, F16H 5556

Patent

active

043876080

ABSTRACT:
To control transmission ratio of a continuously variable transmission connected to a combustion engine (e.g., for optimal fuel efficiency of a powered vehicle), effective diameter of pulleys is controlled in response to an electrical signal. A control signal suitable for comparison with hydrodynamic pressure values is produced by a computing device based on input signals representing load, speed, and other operating conditions and based further on stored data representing engine characteristics. A control signal is conveniently used to control hydrodynamic pressure by means of electromagnetically operated valves. Such control device is readily adapted to different engines by replacement of stored characteristic data.

REFERENCES:
patent: 4107776 (1978-08-01), Beale
patent: 4161894 (1979-07-01), Giacosa

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