Continuously variable transmission belt ratio measurement system

Details Continuously variable transmission belt ratio measurement system Continuously variable transmission belt ratio measurement system

1993-03-29

1994-05-10

Bui, Thuy M.

Endless belt power transmission systems or components

Control for variable input to output speed-ratio

Condition responsive

474 18, 474101, F16H 700

Patent

active

053103840

ABSTRACT:
A continuously variable transmission having a belt ratio measurement system. The continuously variable transmission contains a moveable sheave and a fixed sheave. The measurement system includes two tone wheels and pickups. The first tone wheel is mounted to the fixed sheave with a corresponding first pickup mounted proximate thereto. The second tone wheel is mounted to the moveable sheave with a corresponding second pickup mounted proximate thereto. The second tone wheel has angled teeth so that the signal sensed in the second pickup varies in relation to the axial position of the moveable sheave. By comparing the signal sensed by the first pickup with the signal sensed by the second pickup, the axial position of the moveable sheave, and thus the belt ratio of the transmission, may be determined.

REFERENCES:
patent: 4433594 (1984-02-01), Smirl
patent: 5114383 (1992-05-01), Hirano et al.
patent: 5161433 (1992-11-01), Sakakibara et al.
patent: 5178044 (1993-01-01), Suzuki et al.

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