Title:
EXHAUST GAS PURIFICATION DEVICE AND EXHAUST GAS PURIFICATION METHOD
Document Type and Number:
WIPO Patent Application WO/2006/090513
Kind Code:
A1
Abstract:
An exhaust gas purification system (10) of a vehicle provided with an exhaust gas treatment device (3) having, in an exhaust path of an internal combustion engine (1), either or both of an oxidation catalyst (3a) and a diesel particulate filter (3b). The exhaust gas purification system has a control device provided with a HC separation control means for performing HC separation control by which HC that is accumulated in the exhaust gas treatment device is burnt and removed. The HC separation control is performed when an intake air temperature (Tin) detected by a suction air temperature detection means (32A) is not higher than a predetermined determination temperature (T0) and simultaneously the time duration of an idling state exceeds a predetermined determination value. The construction above solves a problem of HC accumulation caused by idling operation for many hours and minimizes deterioration in drivability and worsening of fuel consumption.
Inventors:
IKEDA TAKASHI (JP)
ONODERA TAKAO (JP)
NAKAYA KENICHI (JP)
MASHIKO TATSUO (JP)
ONODERA TAKAO (JP)
NAKAYA KENICHI (JP)
MASHIKO TATSUO (JP)
Application Number:
PCT/JP2005/020580
Publication Date:
August 31, 2006
Filing Date:
November 10, 2005
Export Citation:
Assignee:
ISUZU MOTORS LTD (JP)
IKEDA TAKASHI (JP)
ONODERA TAKAO (JP)
NAKAYA KENICHI (JP)
MASHIKO TATSUO (JP)
IKEDA TAKASHI (JP)
ONODERA TAKAO (JP)
NAKAYA KENICHI (JP)
MASHIKO TATSUO (JP)
International Classes:
F01N3/24; B01D53/94; F01N3/02; F01N3/20; F02D45/00; B01D46/42
Foreign References:
| JP2004132224A | 2004-04-30 | |||
| JP2003286887A | 2003-10-10 |
Attorney, Agent or Firm:
Ogawa, Shin-ichi (Noguchi & Saika International Patent
Office 37 Kowa Building, 4-5, Tsukiji 1-chom, Chuo-ku Tokyo 45, JP)
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