Invention Grant
- Patent Title: Hydraulic pressure controller for continuously variable transmission
- Patent Title (中): 液压控制器,用于无级变速器
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Application No.: US13581936Application Date: 2010-04-26
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Publication No.: US09303762B2Publication Date: 2016-04-05
- Inventor: Naofumi Nishida
- Applicant: Naofumi Nishida
- Applicant Address: JP Toyota-shi
- Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
- Current Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
- Current Assignee Address: JP Toyota-shi
- Agency: Oblon, McClelland, Maier & Neustadt, L.L.P.
- International Application: PCT/JP2010/057391 WO 20100426
- International Announcement: WO2011/135659 WO 20111103
- Main IPC: F16H61/662
- IPC: F16H61/662

Abstract:
Disclosed is a hydraulic control device for a continuously variable transmission which changes the transmission gear ratio by changing the hydraulic pressure supplied to hydraulic pressure chambers for pulleys in the continuously variable transmission via control valves is changed. In this hydraulic control device, line pressure regulation hydraulic pressure which corresponds to the magnitudes of the oil pressure supplied to the hydraulic pressure chambers is introduced into a regulator valve, and line pressure which is input into the control valves according to the magnitudes of the oil pressure is subjected to feedback regulation. In the hydraulic control device for the continuously variable transmission, after the valve element of the control valve is driven in the valve opening direction, a vibration restriction control operation which temporarily restricts the displacement of the valve element is executed.
Public/Granted literature
- US20120317969A1 HYDRAULIC PRESSURE CONTROLLER FOR CONTINUOUSLY VARIABLE TRANSMISSION Public/Granted day:2012-12-20
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