Title:
内燃機関の排気浄化装置
Document Type and Number:
Japanese Patent JP4385593
Kind Code:
B2
Abstract:
In an exhaust emission control apparatus having an NOx catalyst (9) disposed in an exhaust passage (8) of an internal combustion engine, the present invention is intended to suppress deterioration in exhaust emissions when the temperature of the NOx catalyst is raised. In case where the temperature of the NOx catalyst (9) need be raised, an amount of nitrogen oxides occluded in the NOx catalyst is decreased in advance to the raising of the temperature of the NOx catalyst, whereby the amount of nitrogen oxides to be discharged from the NOx catalyst upon raising the temperature of the NOx catalyst can be decreased.
Inventors:
Kohei Yoshida
Shinichi Takeshima
Shinichi Takeshima
Application Number:
JP2002358555A
Publication Date:
December 16, 2009
Filing Date:
December 10, 2002
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
F01N3/20; F02D43/00; B01D53/86; B01D53/94; F01N3/02; F01N3/08; F01N3/18; F01N3/28; F02D41/02; F02D41/04; F02D45/00; F02D41/40
Domestic Patent References:
| JP2002339730A | ||||
| JP2002180817A | ||||
| JP2002213229A | ||||
| JP2722987B2 |
Attorney, Agent or Firm:
Tsutomu Toyama
Hidemi Matsukura
Yutaka Nagata
Yoshiyuki Kawaguchi
Hidemi Matsukura
Yutaka Nagata
Yoshiyuki Kawaguchi