Hydraulic control device of belt-type continuously variable transmission

In a hydraulic control device of a belt-type continuously variable transmission that includes: a first hydraulic actuator 4c that is provided in a primary pulley 4 and reduces a width of a belt groove when hydraulic pressure is applied thereto; and a first control valve 15 that regulates predetermin...

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Main Authors TOKUNAGA JUNICH, HAYASHI TOSHIAKI, MIZUNO YOSHIHIRO, WATANABE YASUYUKI, HATTORI MASASHI, OGATA YUSUKE
Format Patent
LanguageEnglish
Published 06.01.2016
Subjects
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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Summary:In a hydraulic control device of a belt-type continuously variable transmission that includes: a first hydraulic actuator 4c that is provided in a primary pulley 4 and reduces a width of a belt groove when hydraulic pressure is applied thereto; and a first control valve 15 that regulates predetermined source pressure to be gear-change hydraulic pressure for setting or changing a gear change ratio and outputs the gear-change hydraulic pressure to the first hydraulic actuator 4c, gear change equipment is included that regulates the source pressure to be the gear-change hydraulic pressure so as to regulate the hydraulic pressure of the first hydraulic actuator when the hydraulic pressure of the first hydraulic actuator 4c is rapidly changed to change the width of the belt groove.
Bibliography:Application Number: CN201480021591