Valve device

The invention relates to a valve device. A control device (3) executes a feedback control operation of an electric motor (8) such that a sensed opening degree of a valve (5) approaches a target opening degree (theta b), which is set for a time of fully closing the valve (5). The control device (3) s...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	KAZUSHI SASAKI, OSAMU SHIMANE
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING COMBUSTION ENGINES HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MECHANICAL ENGINEERING SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF WEAPONS
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Beschreibung
Zusammenfassung:	The invention relates to a valve device. A control device (3) executes a feedback control operation of an electric motor (8) such that a sensed opening degree of a valve (5) approaches a target opening degree (theta b), which is set for a time of fully closing the valve (5). The control device (3) stops the energization of the electric motor (8) after reaching of the sensed opening degree of the valve (5) to an energization stop opening degree (theta a), which is set on a valve opening side of a full closing degree (theta 0) of the valve (5) in a valve opening direction of the valve (5). A return spring (10) urges the valve (5) in a valve closing direction of the valve (5). The target opening degree (theta b) is set on a valve closing side of the energization stop opening degree (theta a) in the valve closing direction.