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1. (WO2017154033) CONTROL DEVICE FOR TOROIDAL CONTINUOUSLY VARIABLE TRANSMISSION

Pub. No.:    WO/2017/154033    International Application No.:    PCT/JP2016/001221
Publication Date: Fri Sep 15 01:59:59 CEST 2017 International Filing Date: Tue Mar 08 00:59:59 CET 2016
IPC: F16H 61/02
F16H 15/38
F16H 61/664
Applicants: KAWASAKI JUKOGYO KABUSHIKI KAISHA
川崎重工業株式会社
Inventors: NAKASHIMA, Kenichi
中島 健一
GOI, Tatsuhiko
五井 龍彦
WATANABE, Koji
渡辺 浩二
Title: CONTROL DEVICE FOR TOROIDAL CONTINUOUSLY VARIABLE TRANSMISSION
Abstract:
This control device for a toroidal continuously variable transmission is equipped with a position controller for controlling a roller position by outputting a drive signal to a hydraulic actuator. The hydraulic actuator is equipped with a biasing mechanism for forcibly holding the roller position in a prescribed position when the drive signal satisfies a prescribed condition. The position controller is configured so as to execute a startup control during startup of the toroidal continuously variable transmission. During the startup control, the position controller outputs a drive signal so as to cause a hydraulic actuator spool to move back and forth when the temperature of the working fluid supplied to the hydraulic actuator is below a reference temperature, and thereafter, outputs a drive signal which satisfies the prescribed condition when the working fluid temperature reaches or exceeds the reference temperature.