Title:
CONTROL DEVICE OF POWER TRANSMISSION DEVICE
Document Type and Number:
Japanese Patent JP2019039444
Kind Code:
A
Abstract:
To maintain a gear change ratio of a belted continuously variable transmission when operating a selector valve in a hydraulic control circuit.SOLUTION: In a control device including a hydraulic control circuit having a control valve for regulating secondary pressure with a power transmission device in which a belted continuously variable transmission and a gear row are arranged in parallel with each other as an object, an electromagnetic valve for outputting control hydraulic pressure for operating the control valve, and a selector valve for switching supply destinations of hydraulic pressure to a plurality of engagement devices on the basis of the control hydraulic pressure inputted from an electromagnetic valve, when there arises a changeover requirement of the selector valve (step S1: YES), the control device estimates obtainable secondary pressure on the basis of a sensor value from a hydraulic sensor for detecting the secondary pressure, and an engine rotation number (step S4), and decides primary pressure to a value which can maintain a gear change ratio of the belted continuously variable transmission on the basis of the estimated obtainable secondary pressure (steps S6, S7).SELECTED DRAWING: Figure 6
More Like This:
| JPH0681931 | SHIFT CONTROL DEVICE FOR CONTINUOUSLY VARIABLE TRANSMISSION |
| WO/2000/046527 | CONTINUOUSLY VARIABLE TRANSMISSION |
Inventors:
SUZUMURA KYOHEI
TOYODA SHINYA
TOYODA SHINYA
Application Number:
JP2017159418A
Publication Date:
March 14, 2019
Filing Date:
August 22, 2017
Export Citation:
Assignee:
TOYOTA MOTOR CORP
International Classes:
F16H61/00; F16H61/12; F16H61/66
Attorney, Agent or Firm:
Sakai International Patent Office