Title:
内燃機関の排気浄化装置
Document Type and Number:
Japanese Patent JP4103813
Kind Code:
B2
Abstract:
An exhaust emission control system for an internal combustion engine includes a filter that traps particulate matters and ash and a controller that starts a filter recovery process by controlling a temperature of the filter to a target temperature to bring an inside of the filter into an oxidizing atmosphere such that the particulate matter trapped and accumulated on the filter is removed through oxidization when an estimated amount of the particulate matters trapped and accumulated on the filter exceeds a predetermined amount. The target temperature is set based on the estimated amount of the ash trapped and accumulated on the filter. Even if the amount of the accumulated particulate matter per unit volume is increased owing to accumulation of the ash on the filter, and oxidization reaction speed of the particulate matter may be reduced, thus preventing excessive temperature increase in the filter.
Inventors:
Goto Isamu
Application Number:
JP2004025811A
Publication Date:
June 18, 2008
Filing Date:
February 02, 2004
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
F01N3/02; F02D45/00; B01D46/42; F01N3/023; F01N3/025; F01N9/00; F02D41/02; F01N3/035; F01N3/08; F01N3/36; F02B29/04; F02B37/00; F02M63/02
Domestic Patent References:
| JP6173638A | ||||
| JP2003083036A | ||||
| JP2004036454A |
Attorney, Agent or Firm:
Yoshiyuki Kawaguchi
Hidemi Matsukura
Yutaka Nagata
Kazunobu Sera
Tsutomu Toyama
Hidemi Matsukura
Yutaka Nagata
Kazunobu Sera
Tsutomu Toyama
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