Control apparatus for use of a continuously variable transmissio

Details Control apparatus for use of a continuously variable transmissio Control apparatus for use of a continuously variable transmissio

1985-03-18

1986-07-22

Leppink, James A.

Endless belt power transmission systems or components

Pulley with belt-receiving groove formed by drive faces on...

Speed responsive

474 28, F16H 1106

Patent

active

046016805

ABSTRACT:
A control apparatus for use of a continuously variable transmission. The apparatus controls a rate of changing a RPM ratio in a continuously variable transmission connected to the engine. The transmission has a driving pulley mounted on an input shaft a driven pulley mounted on an output shaft, and an endless belt member spanning the pulleys so that an effective diameter of the pulleys can be varied at different rates with regard to each other so that different speed ratios can be obtained. When a prompt acceleration of a vehicle is required by an operator, a flow control device drains an amount of oil in a hydraulic cylinder of the driving pulley within a first prescribed time period. During a second prescribed time period after the first prescribed time period elapses, a second control device stops the draining of oil in the hydraulic cylinder, thereby maintaining a RPM ratio in a continuously variable transmission to the value at the time when the first prescribed time period elapses.

REFERENCES:
patent: 4403974 (1983-09-01), Sherman et al.
patent: 4543077 (1985-09-01), Yamamuro et al.
patent: 4547178 (1985-10-01), Hayakawa et al.

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