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

Filed on

1989-10-06

Date issued

1991-04-23

Examiner

Herrmann, Allan D.

Patent Class

Machine element or mechanism

SubClass

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

SubSubClass

Preselected indexed position

Other Related Categories

3644241, 474 18, 74867, B60K 4114

Type

Patent

Status

active

Patent number

050091298

Description

ABSTRACT:
A control system for a continuously variable transmission for a motor vehicle has a transmission ratio control valve for controlling the transmission ratio. The transmission ratio is controlled in accordance with a transmission ratio changing rate. At acceleration during low vehicle speed driving, the transmission ratio changing rate is set to a large value so as to quickly increase the transmission ratio.

REFERENCES:
patent: 4782934 (1988-11-01), Takano et al.
patent: 4784021 (1988-11-01), Morimoto
patent: 4794819 (1989-01-01), Tanaka et al.
patent: 4827803 (1989-05-01), Miyawaki
patent: 4843913 (1989-07-01), Miyawaki
patent: 4850935 (1989-07-01), Morimoto
patent: 4909103 (1990-03-01), Morimoto

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