Title:
EXHAUST PURIFICATION DEVICE FOR INTERNAL COMBUSTION ENGINE
Document Type and Number:
WIPO Patent Application WO/2013/005292
Kind Code:
A1
Abstract:
The objective of the present invention is to suppress the deterioration of an oxidizer or reducer addition device provided to an exhaust pathway in order to supply an oxidizer or reducer to a selective reduction NOx catalyst. In the exhaust pathway (2) of an internal combustion engine (1), a first selective reduction NOx catalyst (3) and a second selective reduction NOx catalyst (4) are provided in sequence from the upstream side along the flow of exhaust. Also, the addition device (5) is provided between the first selective reduction NOx catalyst (3) and the second selective reduction NOx catalyst (4).
Inventors:
ITOH KAZUHIRO (JP)
Application Number:
PCT/JP2011/065279
Publication Date:
January 10, 2013
Filing Date:
July 04, 2011
Export Citation:
Assignee:
TOYOTA MOTOR CO LTD (JP)
ITOH KAZUHIRO (JP)
ITOH KAZUHIRO (JP)
International Classes:
F01N3/08; B01D53/56; B01D53/74; B01D53/94
Foreign References:
| JP2002221024A | 2002-08-09 | |||
| JP2008045559A | 2008-02-28 | |||
| JP2006336588A | 2006-12-14 |
Attorney, Agent or Firm:
KAWAGUCHI, Yoshiyuki et al. (JP)
Yoshiyuki Kawaguchi (JP)
Yoshiyuki Kawaguchi (JP)
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