Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Shinichiro Imamura0
Hiroshi Sawada0
Date of Patent
July 10, 2012
0Patent Application Number
126733580
Date Filed
August 11, 2008
0Patent Citations Received
Patent Primary Examiner
Patent abstract
The NOx sensor malfunction diagnostic device includes a control section. The control section performs the supplying of an excess amount of reducing agent, which is more than an amount required to reduce adsorbed NOx in a NOx reduction catalyst when a predetermined amount of NOx has been adsorbed in the NOx catalyst, and detects malfunctions of the NOx sensor based on NOx sensor output signal when the excess amount of reduction agent is supplied.
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