Title:
内燃機関の排気浄化装置
Document Type and Number:
Japanese Patent JP4170935
Kind Code:
B2
Abstract:
An exhaust purifying apparatus estimates an accumulation amount of particulate matter trapped about a catalyst in an exhaust system. When the estimated accumulation amount is equal to or more than a permissible value, the apparatus executes PM elimination control for supplying unburned fuel component to the catalyst. The apparatus sets the estimated accumulation amount to zero at the completion of the PM elimination control. When execution of the PM elimination control becomes possible after suspension of the control, the apparatus resumes the PM elimination control even if the accumulation amount is less than the permissible value. Therefore, The estimated accumulation amount is prevented from being significantly deviated from the actual accumulation amount due to suspension.
Inventors:
Yasuhiko Otsubo
Tatsuhisa Yokoi
Shigehiro Matsuno
Hiroki Matsuoka
Takayoshi Inaba
Tatsuhisa Yokoi
Shigehiro Matsuno
Hiroki Matsuoka
Takayoshi Inaba
Application Number:
JP2004068995A
Publication Date:
October 22, 2008
Filing Date:
March 11, 2004
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:
F01N3/02; B01D46/42; F02D45/00; B01D53/94; F01N3/023; F01N3/025; F01N3/029; F01N3/08; F01N3/36; F01N9/00; F01N3/035; F01N13/02; F02B37/00
Domestic Patent References:
| JP2002349237A | ||||
| JP2003286878A | ||||
| JP6101447A | ||||
| JP7145722A | ||||
| JP2004019523A | ||||
| JP2004183525A |
Attorney, Agent or Firm:
Hironobu Onda
Makoto Onda
Makoto Onda