Title:
EXHAUST EMISSION CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2006/038480
Kind Code:
A1
Abstract:
An exhaust emission control device capable of efficiently regenerate an NOx storage/reduction type catalyst storing NOx by post-injecting sufficient amount of a fuel without diluting an engine oil on the inner wall surface of a cylinder. An NOx absorber and an activated metal are carried on the NOx storage/reduction type catalyst (16) installed in the exhaust passage (14) of an engine (11), and a fuel adding means (17) adds the fuel into an exhaust gas inside the exhaust passage (14) to supply the fuel to the NOx storage/reduction type catalyst (16). The fuel adding means (17) is an accumulator fuel injection device post-injecting the fuel after a main injection to the cylinder (22) of the engine (11) at such a timing that the fuel is not ignited in the cylinder (22). The post-injection by the accumulator fuel injection device (17) is performed in three to twenty times in the latter period of the expansion stroke of the engine (11).
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Inventors:
YOKOTA HARUYUKI (JP)
Application Number:
PCT/JP2005/017580
Publication Date:
April 13, 2006
Filing Date:
September 26, 2005
Export Citation:
Assignee:
HINO MOTORS LTD (JP)
YOKOTA HARUYUKI (JP)
YOKOTA HARUYUKI (JP)
International Classes:
F01N3/20; B01D53/94; F01N3/24; F01N3/36; F02D41/38; F02M45/02
Foreign References:
| JP2001159363A | 2001-06-12 | |||
| JP2001020781A | 2001-01-23 | |||
| JPH0932619A | 1997-02-04 | |||
| JPH1061466A | 1998-03-03 | |||
| JP2004183525A | 2004-07-02 |
Attorney, Agent or Firm:
Suda, Masayoshi (21-11 Higashi-Ikebukuro 1-chom, Toshima-ku Tokyo, JP)
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