Title:
EXHAUST EMISSION CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE
Document Type and Number:
Japanese Patent JP2013087653
Kind Code:
A
Abstract:
To suppress degradation in detection precision of a PM (particulate matter) sensor.
In an exhaust emission control device for an internal combustion engine, a selective reduction type NOx catalyst is provided downstream from a filter in an exhaust passage of the internal combustion engine, and a PM sensor is provided downstream from the selective reduction type NOx catalyst. When detecting the quantity of PM by means of the PM sensor, the flow rate of exhaust gas passing through the selective reduction type NOx catalyst is decreased rather than a case where the quantity of PM is not detected by means of the PM sensor.
Inventors:
OGISO MASATO
SHIMODE KAZUMASA
SHIMODE KAZUMASA
Application Number:
JP2011226941A
Publication Date:
May 13, 2013
Filing Date:
October 14, 2011
Export Citation:
Assignee:
TOYOTA MOTOR CORP
International Classes:
F01N3/00; B01D53/94; F01N3/02; F01N3/08; F01N3/24
Attorney, Agent or Firm:
Yoshiyuki Kawaguchi
Kazunobu Sera
Akira Hirakawa
Takehiko Sekine
Katsuhiko Imahori
Fuminori Miyashita
Kazunobu Sera
Akira Hirakawa
Takehiko Sekine
Katsuhiko Imahori
Fuminori Miyashita
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