Belt ratio controller for a continuously vaiable transmission

Details Belt ratio controller for a continuously vaiable transmission Belt ratio controller for a continuously vaiable transmission

1989-11-29

1991-12-03

Herrmann, Allan D.

Machine element or mechanism

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

Preselected indexed position

74844, 474 12, B60K 4114

Patent

active

050690868

ABSTRACT:
A continuously variable transmission which effects a speed change by increasing and decreasing the width of a groove between a fixed pulley part and a movable pulley part. A belt ratio controller for the transmission uses oil pressure to increase and decrease the rotating radius of a belt wound on the pulley parts, the belt controller controlling the belt ratio to a target belt ratio value set based on the opening of the throttle when starting on a road having a small road surface friction coefficient.

REFERENCES:
patent: 4670843 (1987-06-01), Matsumura et al.
patent: 4730518 (1988-03-01), Miyawaki
patent: 4743223 (1988-05-01), Tokoro et al.
patent: 4757870 (1988-07-01), Torii et al.
patent: 4858498 (1989-08-01), Bouda
patent: 4907471 (1990-03-01), Ishimaru

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