Title:
排気浄化装置および車両
Document Type and Number:
Japanese Patent JP7063088
Kind Code:
B2
Abstract:
To provide an exhaust emission control device and a vehicle capable of preventing NOx from being discharged to atmospheric air at 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 an exhausting direction with respect to the turbine and a region between the turbine and the NOx selective reduction type catalyst in the exhaust direction in the exhaust pipe, 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 in a case when a temperature of the exhaust gas is a temperature to desorb NOx adsorbed to the NOx adsorption catalyst, or more.SELECTED DRAWING: Figure 1
Inventors:
Yudai Kageyama
Kazuki Oishi
Kazuki Oishi
Application Number:
JP2018085999A
Publication Date:
May 09, 2022
Filing Date:
April 27, 2018
Export Citation:
Assignee:
Isuzu Motors Limited
International Classes:
F01N3/24; F01N3/20; F01N3/28; F02D23/00
Domestic Patent References:
JP2009270535A | ||||
JP2013002355A | ||||
JP2001107722A | ||||
JP2013124610A |
Foreign References:
US20110088373 |
Attorney, Agent or Firm:
Washeda International Patent Office
Previous Patent: Supply / discharge device and tire vulcanizer
Next Patent: Exhaust purification equipment and vehicles
Next Patent: Exhaust purification equipment and vehicles