Title:
排気浄化装置および車両
Document Type and Number:
Japanese Patent JP7063089
Kind Code:
B2
Abstract:
To provide an exhaust emission control device and a vehicle capable of preventing NOx from being discharged to atmospheric air in a low temperature region of an exhaust gas.SOLUTION: An exhaust emission control device includes a NOx selective reduction type catalyst disposed at a downstream side in an exhausting direction with respect to a turbine in an exhaust pipe, an upstream-side bypass passage portion connecting a region at an upstream side in the exhausting direction with respect to the turbine and a region between the turbine and a NOx selective reduction type catalyst in the exhausting direction, a downstream-side bypass passage portion connecting a region between the turbine and the NOx selective reduction type catalyst in the exhausting direction and a downstream side in the exhausting direction with respect to the NOx selective reduction type catalyst in the exhaust pipe, a NOx adsorption catalyst disposed in the downstream-side bypass passage portion to adsorb nitrogen oxide in the exhaust gas and then reduce the same, and a control portion for controlling an upstream-side adjustment portion and a downstream-side adjustment portion so that the exhaust gas flows to the downstream-side bypass passage portion through the upstream-side bypass passage portion when necessity of desorbing the nitrogen oxide is determined.SELECTED DRAWING: Figure 1
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Inventors:
Yudai Kageyama
Kazuki Oishi
Kazuki Oishi
Application Number:
JP2018086001A
Publication Date:
May 09, 2022
Filing Date:
April 27, 2018
Export Citation:
Assignee:
Isuzu Motors Limited
International Classes:
F01N3/20; F01N3/08; F01N3/24; F01N3/28; F02D23/00
Domestic Patent References:
| JP2009270535A | ||||
| JP2006009637A | ||||
| JP2013245606A |
Attorney, Agent or Firm:
Washeda International Patent Office