Control system for an infinitely variable transmission

Details Control system for an infinitely variable transmission Control system for an infinitely variable transmission

1986-03-25

1988-05-31

Leppink, James A.

Endless belt power transmission systems or components

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

Fluid pressure actuator for adjustment of member

474 70, 74864, 74868, 74869, B60K 4116

Patent

active

047478071

ABSTRACT:
A control system for an infinitely 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. Acceleration of depression of an accelerator pedal is detected to produce an acceleration signal. By controlling the pressure of oil supplied to the transmission ratio control valve in accordance with engine operating conditions and the acceleration signal, the spool is shifted, so that the speed of changing the transmission ratio is controlled.

REFERENCES:
patent: 4369675 (1983-01-01), van Deursen
patent: 4480504 (1984-11-01), Oguma
patent: 4519790 (1985-05-01), Yamamura et al.
patent: 4534243 (1985-08-01), Yokoyama et al.
patent: 4579021 (1986-04-01), Yamamura et al.
patent: 4589071 (1986-05-01), Yamamura et al.
patent: 4597308 (1986-07-01), Tanaka et al.
patent: 4657522 (1987-04-01), Miyawaki
patent: 4663991 (1987-05-01), Nakamura et al.

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