Speed change control device for belt type continuously variable transmission and control method thereof

A speed change control device for a belt type continuously variable transmission has a speed change control unit (32) which controls an oil pressure for determining a speed ratio of the continuously variable transmission (10) by operating a step motor (40), and detects a rotation speed of a primary...

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Bibliographische Detailangaben
Hauptverfasser:	KIMURA, YUSUKE, OCHIAI, TATSUO
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING ENGINEERING ELEMENTS AND UNITS GEARING GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MECHANICAL ENGINEERING THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	A speed change control device for a belt type continuously variable transmission has a speed change control unit (32) which controls an oil pressure for determining a speed ratio of the continuously variable transmission (10) by operating a step motor (40), and detects a rotation speed of a primary pulley or a secondary pulley. A driving speed of the step motor (40) is limited using two or more of a temperature of a working oil of the speed change control unit (32), the speed ratio of the continuously variable transmission (10), and the detected rotation speed as parameters.