Title:
異常診断装置及び内燃機関の排気浄化装置
Document Type and Number:
Japanese Patent JP5837197
Kind Code:
B2
Abstract:
An abnormal diagnosis device capable of specifying abnormality of an ammonia slip catalyst provided on a downstream side of a selection reduction catalyst, and an exhaust gas purification device of an internal combustion engine including the abnormal diagnosis device are provided. A purification rate diagnosis unit which diagnoses an NO x purification rate in the exhaust gas purification device, and an abnormality determination unit which specifies abnormality of the ammonia slip catalyst based on a diagnostic result of the NO x purification rate obtained at the time of a high load operation of the internal combustion engine and a diagnostic result of the NO x purification rate obtained at the time of a low load operation of the internal combustion engine are provided.
Inventors:
Kenichi Tanioka
Application Number:
JP2014522577A
Publication Date:
December 24, 2015
Filing Date:
June 20, 2013
Export Citation:
Assignee:
ROBERT BOSCH GMBH
International Classes:
F01N3/20; B01D53/90; B01D53/94; F01N3/08; F01N3/24
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