Title:
EXHAUST EMISSION CONTROL DEVICE
Document Type and Number:
Japanese Patent JP2018128006
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an exhaust emission control device and the like capable of reducing NOx emissions generated at cold start.SOLUTION: An urea injection valve 83, a metal honeycomb 91, a temperature sensor S3 and an SCR catalyst 73 are provided in an exhaust passage 51 of an exhaust emission control device 100. An exhaust gas temperature of exhaust gas passing through the metal honeycomb 91 can be raised by the metal honeycomb 91 that can be electrically heated through control of a control section ECU, and is detected by the temperature sensor S3. Based on a temperature-ammonia adsorption quantity profile stored beforehand in a storage section of the control section ECU, ammonia is adsorbed beforehand to the metal honeycomb 91 and the SCR catalyst 73, and the metal honeycomb 91 is electrically heated at cold start after a temperature detected by the temperature sensor S3 becomes below 150°C.SELECTED DRAWING: Figure 1
Inventors:
OKAJIMA TOSHINORI
NAGATA MAKOTO
OKUI NOBUYASU
YAMAGUCHI KYOHEI
NAGATA MAKOTO
OKUI NOBUYASU
YAMAGUCHI KYOHEI
Application Number:
JP2017066063A
Publication Date:
August 16, 2018
Filing Date:
March 29, 2017
Export Citation:
Assignee:
NE CHEMCAT CORP
NATIONAL AGENCY FOR AUTOMOBILE & LAND TRANSP TECHNOLOGY
NATIONAL AGENCY FOR AUTOMOBILE & LAND TRANSP TECHNOLOGY
International Classes:
F01N3/20; B01D53/94; B01J35/02; B01J35/04; F01N3/08; F01N3/28; F01N13/14
Domestic Patent References:
| JP2016217301A | 2016-12-22 |
Foreign References:
| WO2013183153A1 | 2013-12-12 |
Attorney, Agent or Firm:
Yu Sanada
Satojiro Okano
Satojiro Okano