Method of and apparatus for controlling the transmission ratio o

Details Method of and apparatus for controlling the transmission ratio o Method of and apparatus for controlling the transmission ratio o

1988-05-12

1990-04-03

Bui, Thuy M.

Endless belt power transmission systems or components

Control for variable input to output speed-ratio

474 18, 474 28, F16H 1102

Patent

active

049136860

ABSTRACT:
A speed ratio of a continuously variable transmission is controlled by varying the effective diameters of drive and driven pulleys mounted respectively on input and output shafts with a V-belt trained around the drive and driven pulleys. The effective diameter of the drive pulley is increased based on a signal proportional to a vehicle speed and reduced based on a signal proportional to a throttle valve opening degree and a signal proportional to a speed ratio.

REFERENCES:
patent: 3600961 (1970-12-01), Rattunde
patent: 4519790 (1985-05-01), Yamamuro et al.
patent: 4522086 (1985-06-01), Haley
patent: 4533340 (1985-08-01), Abo et al.
patent: 4560369 (1985-12-01), Hattori
patent: 4579208 (1986-04-01), Nishikawa et al.
patent: 4619157 (1986-10-01), Sakai

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