Title:
排気浄化装置
Document Type and Number:
Japanese Patent JP6665523
Kind Code:
B2
Abstract:
An exhaust purification apparatus includes: a urea water supplier that is configured to supply urea water into an exhaust passage in which exhaust discharged from an internal-combustion engine flows; a nitrogen oxide trapping catalyst that is disposed on an exhaust upstream side of the urea water supplier, the nitrogen oxide trapping catalyst that is configured to occlude nitrogen oxide contained in the exhaust under an oxidizing atmosphere, and is configured to reduce the nitrogen oxide under a reducing atmosphere; a selective reduction catalyst that is disposed on an exhaust downstream side of the urea water supplier, the selective reduction catalyst that is configured to reduce the nitrogen oxide contained in the exhaust by using as a reducing agent the urea water supplied from the urea water supplier; and a controller that is configured to control an amount of supply of the urea water supplied from the urea water supplier, and that has a normal mode and a decrease mode in which the amount of supply of the urea water supplied from the urea water supplier is suppressed compared with in the normal mode.
Inventors:
Kazuhito Kawashima
Hiroshi Anoda
Ryoji Kato
Takahashi Akira
Daisuke Sato
Hiroshi Anoda
Ryoji Kato
Takahashi Akira
Daisuke Sato
Application Number:
JP2015250382A
Publication Date:
March 13, 2020
Filing Date:
December 22, 2015
Export Citation:
Assignee:
MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA
International Classes:
F01N3/08; B01D53/94; F01N3/20
Domestic Patent References:
| JP2010116784A | ||||
| JP2008121629A |
Foreign References:
| US20150275730 |
Attorney, Agent or Firm:
Shuichi Kudo
Toru Kabayama
Shogo Honda
Toru Kabayama
Shogo Honda