METHOD AND APPARATUS FOR DETECTING ABNORMALITY OF

专利名称：METHOD AND APPARATUS FOR DETECTING

ABNORMALITY OF NITROGEN OXIDEPURIFYING CATALYST

发明人：Hisashi SASAKI,Kenji KATO,Koji

SHIOTANI,Takeshi KAWAI

申请号：US12607106申请日：20091028

公开号：US20100101314A1公开日：20100429

专利附图：

摘要：A method and apparatus for detecting an abnormality of a nitrogen oxide

purifying catalyst using an NOx sensor, the method including: calculating a detectionintegrated value by integrating corresponding values corresponding to the NOx sensoroutput signal obtained until a first predetermined detection period has elapsed after theNOx sensor begins to generate an output signal and subtracting a variation integratedvalue. The variation integrated value is calculated by integrating corresponding valuesobtained until a predetermined second detection period has elapsed after the NOxsensor beings to generate an output signal when driven in a gas atmosphere having aconstant nitrogen oxide concentration.

申请人：Hisashi SASAKI,Kenji KATO,Koji SHIOTANI,Takeshi KAWAI

地址：Konan-shi JP,Nagoya-shi JP,Kasugai-shi JP,Komaki-shi JP

国籍：JP,JP,JP,JP

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