Transmission ratio control system for a continuously variable tr

Details Transmission ratio control system for a continuously variable tr Transmission ratio control system for a continuously variable tr

1986-12-22

1989-02-14

Wright, Dirk

Machine element or mechanism

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

Preselected indexed position

74867, 3644241, B60K 4118

Patent

active

048039004

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. The desired ratio is increased at rapid deceleration of a vehicle to increase actual transmission ratio so that the transmission ratio reaches a maximum ratio before the vehicle stops.

REFERENCES:
patent: 4387608 (1983-06-01), Mohl et al.
patent: 4522086 (1985-06-01), Haley
patent: 4590561 (1986-05-01), Abo et al.
patent: 4612828 (1986-09-01), Ide et al.
patent: 4631043 (1986-12-01), Tokoro et al.
patent: 4638689 (1987-01-01), Sakai
patent: 4641553 (1987-02-01), Kobayashi
patent: 4644827 (1987-02-01), Takano et al.
patent: 4649486 (1987-03-01), Oshiage
patent: 4657522 (1987-04-01), Miyawaki
patent: 4663991 (1987-05-01), Nakamura et al.
patent: 4701853 (1987-10-01), Osanai

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