Control device of an infinitely variable transmission

Details Control device of an infinitely variable transmission Control device of an infinitely variable transmission

1984-08-08

1987-01-27

Braun, Leslie A.

Machine element or mechanism

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

Preselected indexed position

74856, 741905, B60K 4118, F16H 1500

Patent

active

046386912

ABSTRACT:
A device for automatically speed-change-controlling an infinitely variable transmission of a running vehicle according to the running mode of the vehicle selected by the driver is disclosed. The infinitely variable transmission includes a transmission device for transmitting rotation from the input side to the output side and a speed changing device controlled by a hydraulic cylinder. The device is provided with a hydraulic pressure source, a hydraulic circuit connected to the hydraulic pressure source and communicating with the hydraulic cylinder, a high-speed solenoid valve incorporated in the hydraulic circuit, and an electronic control device for calculating a predetermined gear ratio conforming to the running mode and digitally controlling the operation of the high-speed solenoid valve.

REFERENCES:
patent: 4262783 (1981-04-01), Scarrott et al.
patent: 4285252 (1981-08-01), Yamaki et al.
patent: 4297918 (1981-11-01), Perry
patent: 4383456 (1983-05-01), Ganoung
patent: 4464952 (1984-08-01), Stubbs
patent: 4466521 (1984-08-01), Hattori et al.
patent: 4481843 (1984-11-01), Jarvis et al.
patent: 4481844 (1984-11-01), Ironside et al.
patent: 4488456 (1984-12-01), Taga et al.
patent: 4509125 (1985-04-01), Fattic et al.
patent: 4526051 (1985-07-01), Kraus

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