Title:
内燃機関の排気浄化装置
Document Type and Number:
Japanese Patent JP4069044
Kind Code:
B2
Abstract:
An exhaust filter 38 includes a filter for trapping particulate matter contained in exhaust gas and a NOx storage reduction catalyst coated on the filter. As an S release control of the exhaust filter 38, a fuel adding valve 68 intermittently adds fuel to exhaust gas. While fuel is added to exhaust gas, the degree of a temperature increase due to the fuel addition is monitored after the first addition of fuel. Based on the results of monitoring, whether the second and subsequent additions of fuel need to be performed is determined. Accordingly, sulfur oxides occluded by the NOx storage reduction catalyst are adequately reduced.
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Inventors:
Shigehiro Matsuno
Kobayashi
Takayoshi Inaba
Kobayashi
Takayoshi Inaba
Application Number:
JP2003320030A
Publication Date:
March 26, 2008
Filing Date:
September 11, 2003
Export Citation:
Assignee:
トヨタ自動車株式会社
株式会社デンソー
株式会社デンソー
International Classes:
F01N3/20; F02D43/00; F01N3/02; F01N3/021; F01N3/023; F01N3/025; F01N3/035; F01N3/08; F01N3/24; F01N3/28; F01N3/36; F01N9/00; F02D41/02; F02D41/04; F02D41/38; F01N13/02; F02B37/00; F02M25/07; F02M63/02
Domestic Patent References:
| JP2003166415A | ||||
| JP11257053A | ||||
| JP2000034943A | ||||
| JP2003148142A | ||||
| JP2002213286A |
Attorney, Agent or Firm:
Hironobu Onda
Makoto Onda
Makoto Onda