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Title:
EXHAUST PURIFICATION APPARATUS FOR INTERNAL COMBUSTION ENGINE
Document Type and Number:
WIPO Patent Application WO/2021/010299
Kind Code:
A1
Abstract:
This exhaust purification apparatus for an internal combustion engine 1 comprises: a first oxidation catalyst 22 and a second oxidation catalyst 23 provided to an exhaust passage 4 in the stated order from an upstream side; and a control unit 100 configured so as to execute temperature-increasing control for increasing the temperature of exhaust in an outlet of the first oxidation catalyst, and diagnose the first oxidation catalyst on the basis of the temperature of exhaust in an outlet of the second oxidation catalyst while the temperature-increasing control is being executed.

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Inventors:
IKEDA TAKASHI (JP)
YAZAWA TAKEHIRO (JP)
Application Number:
PCT/JP2020/026943
Publication Date:
January 21, 2021
Filing Date:
July 10, 2020
Export Citation:
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Assignee:
ISUZU MOTORS LTD (JP)
International Classes:
F01N3/023; F01N3/035; F01N3/20; F01N3/24; F01N3/36; F02D41/04
Foreign References:
JP2007016617A2007-01-25
JP2004353606A2004-12-16
JP2010112220A2010-05-20
JPH05312025A1993-11-22
JPH0674025A1994-03-15
JP2016003615A2016-01-12
JP2006291742A2006-10-26
Attorney, Agent or Firm:
HIBIYA Yukihiko et al. (JP)
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