Endless belt power transmission systems or components – Pulley with belt-receiving groove formed by drive faces on... – Fluid pressure actuator for adjustment of member
Patent
1987-02-18
1988-08-30
Bui, Thuy M.
Endless belt power transmission systems or components
Pulley with belt-receiving groove formed by drive faces on...
Fluid pressure actuator for adjustment of member
74866, 3644241, F16H 1102, B60K 4112
Patent
active
047673826
ABSTRACT:
A control system for a continuously variable transmission has a transmission ratio control valve having a spool for controlling oil supplied to a cylinder of a drive pulley to change the transmission ratio. The control system operates to control the transmission ratio in accordance with a desired ratio including a desired overdrive ratio for providing an overdrive transmission ratio. In a low vehicle speed range, the overdrive transmission ratio is controlled to a value slightly larger than the overdrive transmission ratio.
REFERENCES:
patent: 4672864 (1987-06-01), Morimoto
Tanaka Hiroshi
Tezuka Kazunari
Bui Thuy M.
Farber Martin A.
Fuji Jukogyo Kabushiki Kaisha
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