Title:
EXHAUST GAS PURIFYING METHOD AND PURIFIER
Document Type and Number:
WIPO Patent Application WO/2006/115158
Kind Code:
A1
Abstract:
An exhaust gas purification system (1) performing regeneration control in a rich state by using control of an intake system for reducing the quantity of intake air together with control of a fuel system for increasing fuel injection amount into a cylinder, wherein the timing (Tn) for injecting fuel into the cylinder is varied in response to the continuous variation (&lgr n) of air fuel ratio in the cylinder during the switching intervals (t1, t2) between lean state and rich state at the time of regeneration control of NOx purification catalyst (12). During a period of transition to rich state or lean state, misfiring, combustion noise, torque variation, deterioration in drivability, and the like, due to undue advance angle or lag angle in the timing for injecting fuel into the cylinder can thereby be prevented.
Inventors:
GABE MASASHI (JP)
NAGAOKA DAIJI (JP)
NAGAOKA DAIJI (JP)
Application Number:
PCT/JP2006/308281
Publication Date:
November 02, 2006
Filing Date:
April 20, 2006
Export Citation:
Assignee:
ISUZU MOTORS LTD (JP)
GABE MASASHI (JP)
NAGAOKA DAIJI (JP)
GABE MASASHI (JP)
NAGAOKA DAIJI (JP)
International Classes:
F02D41/04; F01N3/08; F01N3/20; F01N3/24; F01N3/28
Foreign References:
| JP2000356127A | 2000-12-26 | |||
| JP2005090278A | 2005-04-07 | |||
| JP2002195072A | 2002-07-10 | |||
| JP2001200715A | 2001-07-27 |
Other References:
See also references of EP 1873381A4
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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