Title:
内燃機関の排気浄化装置
Document Type and Number:
Japanese Patent JP5880731
Kind Code:
B2
Abstract:
It is possible to decrease the amount of NOx emitted into the air. The amount of ammonia adsorbed on an SCR catalyst is calculated by subtracting the amount of ammonium nitrate produced on the SCR catalyst from the amount of ammonia adsorbed on the SCR catalyst at the time of starting of an internal combustion engine, and the amount of NO 2 flowing into the SCR catalyst is decreased when an NOx purification rate estimated from the amount of ammonia adsorbed on the SCR catalyst is less than a threshold value compared to when the NOx purification rate is equal to or greater than the threshold value.
Inventors:
Bungo Kawaguchi
Ken Shirasawa
Tomihisa Oda
Ken Shirasawa
Tomihisa Oda
Application Number:
JP2014545652A
Publication Date:
March 09, 2016
Filing Date:
October 28, 2013
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
F01N3/08; B01D53/94; F01N3/20; F01N3/28; F01N3/36
Domestic Patent References:
| JP2006320854A | 2006-11-30 | |||
| JP2004346794A | 2004-12-09 | |||
| JP2011102573A | 2011-05-26 | |||
| JP2011226402A | 2011-11-10 | |||
| JP2005256727A | 2005-09-22 |
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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