Title:
EXHAUST GAS PURIFICATION SYSTEM, AND NOx PURIFICATION CAPACITY RESTORATION METHOD
Document Type and Number:
WIPO Patent Application WO/2016/117573
Kind Code:
A1
Abstract:
The present invention is provided with: a NOx adsorption/reduction catalyst 32 that reduces and purifies NOx in exhaust gas and is provided in an exhaust gas system in an internal combustion engine 10; a deterioration degree estimation unit 120 that estimates the degree of deterioration of the NOx adsorption/reduction catalyst 32; a regeneration control unit 100 that implements a regeneration process for restoring the NOx adsorption capacity of the NOx adsorption/reduction catalyst 32 by enriching the exhaust gas; an interval setting unit 118 that sets the target interval from the completion of the regeneration process by the regeneration control means 100 to the start of the next regeneration process; and an interval target value correction unit 119 that corrects the target interval on the basis of the degree of deterioration estimated by the deterioration degree estimation unit 120.
Inventors:
NAKADA TERUO (JP)
SAKAMOTO TAKAYUKI (JP)
NAGAOKA DAIJI (JP)
SAKAMOTO TAKAYUKI (JP)
NAGAOKA DAIJI (JP)
Application Number:
PCT/JP2016/051474
Publication Date:
July 28, 2016
Filing Date:
January 19, 2016
Export Citation:
Assignee:
ISUZU MOTORS LTD (JP)
International Classes:
F01N3/20; B01D53/94; B01D53/96; F01N3/08; F01N3/36; F01N11/00; F02D41/04
Foreign References:
| JP2006336518A | 2006-12-14 | |||
| JPH08261041A | 1996-10-08 | |||
| JP2008202425A | 2008-09-04 | |||
| JP2007239581A | 2007-09-20 |
Other References:
See also references of EP 3249188A4
Attorney, Agent or Firm:
HIBIYA Yukihiko et al. (JP)
Hibiya Masahiko (JP)
Hibiya Masahiko (JP)
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