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Title:
CONTROL DEVICE OF CONTINUOUSLY VARIABLE TRANSMISSION
Document Type and Number:
Japanese Patent JP2018173153
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a control device of a continuously variable transmission capable of suppressing the turning of lock-up due to the lack of hydraulic pressure supplied to a lock-up mechanism.SOLUTION: Lock-up pressure which is hydraulic pressure supplied to a lock-up mechanism is obtained (S1). Also, necessary lock-up pressure which is hydraulic pressure necessary for turning on the lock-up of the lock-up mechanism is obtained (S2). Then, if it is determined whether or not the lock-up pressure is a threshold value or less by adding a predetermined value to the necessary lock-up pressure (S3). If the lock-up pressure is the threshold value or less (S3: YES), based on the estimation that the lock-up pressure enters a lock-up deviation area lowering the necessary lock-up pressure, so as to prevent the lock-up pressure from entering the lock-up deviation area, a transmission ratio of a continuously variable transmission 4 is forcibly shifted to a low side (S4).SELECTED DRAWING: Figure 3

Inventors:
KAWARADA HARUKA
KAWAKAMI TATSUYOSHI
UTO RYOTA
Application Number:
JP2017073309A
Publication Date:
November 08, 2018
Filing Date:
March 31, 2017
Export Citation:
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Assignee:
DAIHATSU MOTOR CO LTD
International Classes:
F16H61/12; F16H59/68; F16H61/662
Attorney, Agent or Firm:
Yuichi Minagawa



 
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