METHOD FOR DETERMINING CATALYST DISORDER

PURPOSE: A normal operation of a catalyst is determined by catalyst deterioration index calculated by an areal integration of signal of a thermal oxygen sensor. Misjudgment by abrupt fluid change is prevented. CONSTITUTION: A device for determining catalyst disorder comprises a first oxygen sensor(1...

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Bibliographische Detailangaben
1. Verfasser:	HAN, SEUNG GUK
Format:	Patent
Sprache:	eng ; kor
Schlagworte:	BLASTING ENGINE PLANTS IN GENERAL GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL HEATING LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING STEAM ENGINES WEAPONS
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Beschreibung
Zusammenfassung:	PURPOSE: A normal operation of a catalyst is determined by catalyst deterioration index calculated by an areal integration of signal of a thermal oxygen sensor. Misjudgment by abrupt fluid change is prevented. CONSTITUTION: A device for determining catalyst disorder comprises a first oxygen sensor(11), a second oxygen sensor(12), and an ECU(20). The first oxygen sensor(11) is installed in a front side of the catalyst. The first oxygen sensor(11) senses the oxygen density in a discharge gas, and outputs a corresponding signal. The second oxygen sensor(12) is installed in a rear side of the catalyst. The second oxygen sensor(12) detects oxygen density in a discharge gas which is filtered by the catalyst, and outputs a corresponding signal. An ECU(20) area-integrates the signal of the first oxygen sensor(11) and the second oxygen sensor(12) to calculate a catalyst deterioration index.