APPARATUS AND METHOD FOR REMOVING POISON OF LAMDA SENSOR

A poisoning removal apparatus of a lambda sensor according to an embodiment of the present invention includes: a lambda sensor detecting concentration of oxygen contained in exhaust gas; and a control unit differentiating a heating temperature and a heating time for poisoning removal of the lambda s...

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Bibliographische Detailangaben
Hauptverfasser:	SEO, MOO SEOCK, SEO, SEUNG WOO, JIN, JEONG SIK, YOO, JIN SEUNG, KANG, KI HONG, KIM, SHIN GEOL, YOU, SUNG IL, JANG, HWA YONG, PARK, SEONG MIN
Format:	Patent
Sprache:	eng ; kor
Schlagworte:	BLASTING COMBUSTION ENGINES CONTROLLING COMBUSTION ENGINES 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 HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MACHINES OR ENGINES IN GENERAL MEASURING MECHANICAL ENGINEERING PHYSICS STEAM ENGINES TESTING TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR WEAPONS
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Beschreibung
Zusammenfassung:	A poisoning removal apparatus of a lambda sensor according to an embodiment of the present invention includes: a lambda sensor detecting concentration of oxygen contained in exhaust gas; and a control unit differentiating a heating temperature and a heating time for poisoning removal of the lambda sensor according to a lambda signal output from the lambda sensor in an overrun section of an engine. An apparatus and a method for poisoning removal of a lambda sensor according to an embodiment of the present invention heat the lambda sensor according to a magnitude of a lambda signal outputted from the lambda sensor, thereby burning a poisoned substance in an electrode of the lambda sensor to prevent the lambda sensor from being depleted and to accurately determine whether or not the lambda sensor has failed. 본 발명의 실시예에 따른 람다 센서의 피독 제거 장치는 배기 가스에 포함된 산소 농도를 검출하는 람다 센서; 및 엔진의 오버런 구간에서 상기 람다 센서에서 출력되는 람다 신호에 따라 람다 센서의 피독 제거을 위한 가열 온도 및 가열 시간을 차별화하는 제어부;를 포함할 수 있다. 본 발명의 실시예에 의한 람다 센서의 피독 제거 장치 및 방법에 의하면, 람다 센서에서 출력되는 람다 신호의 크기에 따라 람다 센서를 가열함으로써, 람다 센서의 전극에 피독된 물질을 연소시켜 람다 센서가 열화되는 것을 방지할 수 있고, 람다 센서의 고장 여부를 정확히 판단할 수 있다.