Title:
EXHAUST EMISSION CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE
Document Type and Number:
Japanese Patent JP2019112973
Kind Code:
A
Abstract:
To provide technique capable of improving exhaust emission control capacity in an exhaust emission control device.SOLUTION: An exhaust emission control device for an internal combustion engine includes an upstream side catalyst arranged relatively on an upstream side in an exhaust flow passage through which exhaust gas discharged from the internal combustion engine flows, and a downstream side catalyst provided on a downstream side of the upstream side catalyst in the exhaust flow passage and having oxygen storage capacity. The oxygen storage capacity of the upstream side catalyst is lower than that of the downstream side catalyst, and at least one of the upstream side catalyst and the downstream side catalyst has a NOx storage reduction function.SELECTED DRAWING: Figure 1
Inventors:
UEDA MATSUE
WAKIZAKA YOSHIFUMI
HOTTA YOSHIHIRO
MIYAGAWA HIROSHI
NOZAKI YUSUKE
KAWAI KENJI
WAKIZAKA YOSHIFUMI
HOTTA YOSHIHIRO
MIYAGAWA HIROSHI
NOZAKI YUSUKE
KAWAI KENJI
Application Number:
JP2017245467A
Publication Date:
July 11, 2019
Filing Date:
December 21, 2017
Export Citation:
Assignee:
TOYOTA CENTRAL RES & DEV
TOYOTA MOTOR CORP
TOYOTA IND CORP
TOYOTA MOTOR CORP
TOYOTA IND CORP
International Classes:
F01N3/08; B01D53/94; F01N3/10; F01N3/28
Domestic Patent References:
| JP2005214071A | 2005-08-11 | |||
| JP2005120909A | 2005-05-12 | |||
| JP2000045751A | 2000-02-15 | |||
| JP2004076681A | 2004-03-11 | |||
| JP2008062156A | 2008-03-21 | |||
| JP2008240622A | 2008-10-09 |
Foreign References:
| WO2014123232A1 | 2014-08-14 |
Attorney, Agent or Firm:
Junya Tanabe
Itaekura Yukie
Itaekura Yukie