HYDRAULIC CONTROL APPARATUS FOR SPEED RATIO CHANGE

The present invention provides a hydraulic control apparatus for controlling the speed ratio change of a transmission system. The apparatus, disposed on a carrier, comprises a first pulley unit, a second pulley unit, a first hydraulic drive circuit, a second hydraulic drive circuit, and a hydraulic...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: HUNG YI-HSUAN, LU CHUN-HSIEN, HSU SHIH-HSIN, WEI TSENG-TE
Format: Patent
Sprache:eng
Schlagworte:
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Beschreibung
Zusammenfassung:The present invention provides a hydraulic control apparatus for controlling the speed ratio change of a transmission system. The apparatus, disposed on a carrier, comprises a first pulley unit, a second pulley unit, a first hydraulic drive circuit, a second hydraulic drive circuit, and a hydraulic control circuit and a controller. The first pulley unit coupled to the second pulley unit by a transmission belt, and the first pulley unit and the second pulley unit are fluidly connected to the first and the second hydraulic drive circuit respectively. The hydraulic control circuit fluidly connected to the independent first and second hydraulic drive circuit. The controller functions to switch the series or parallel connection status between the first and second hydraulic drive circuit according to the moving status of the carrier through the hydraulic control circuit so that the speed ratio change is capable of being adjusted continuously and synchronously.