ELECTROMAGNETIC VALVE DRIVE DEVICE

An electromagnetic valve drive device which supplies a hold current with a prescribed fluctuation range to an electromagnetic coil of an electromagnetic valve after a current peak when a supply of electricity starts has passed includes: a power supplier which intermittently applies a drive voltage t...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	KATO, Motoaki, KURODA, Keisuke, NOMURA, Kengo, KAWAJIRI, Makoto, OGAWA, Atsushi
Format:	Patent
Sprache:	eng
Schlagworte:	ACTUATING-FLOATS BLASTING COCKS COMBUSTION ENGINES CONTROLLING COMBUSTION ENGINES DEVICES FOR VENTING OR AERATING ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MECHANICAL ENGINEERING SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF TAPS THERMAL INSULATION IN GENERAL VALVES WEAPONS
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Beschreibung
Zusammenfassung:	An electromagnetic valve drive device which supplies a hold current with a prescribed fluctuation range to an electromagnetic coil of an electromagnetic valve after a current peak when a supply of electricity starts has passed includes: a power supplier which intermittently applies a drive voltage to the electromagnetic coil; a detector which detects the hold current; a first comparator which compares a detected current by the detector with a first threshold value; a filter which performs integration processing on an output of the first comparator; a second comparator which compares an output of the filter with a second threshold value to generate an output signal used for generating a control signal for controlling the power supplier; and a control signal generator which generates the control signal for controlling the power supplier based on the output signal of the second comparator, wherein the filter is a count-up/down type digital filter.