Title:
DEGRADATION DIAGNOSIS DEVICE FOR EXHAUST PURIFICATION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2019/182112
Kind Code:
A1
Abstract:
This degradation diagnosis device for an exhaust purification system makes it possible to discover degradation of a constituting component in an exhaust purification system at an early stage. The degradation diagnosis device for an exhaust purification system that purifies exhaust gas discharged from an internal combustion engine into an exhaust pipe is provided with: a degradation degree estimation unit that estimates the degree of degradation due to corrosion of a constituting component in the exhaust purification system on the basis of the temperature of exhaust gas and the amount of a reducing agent injected into the exhaust pipe; a determination unit that determines whether the degradation degree estimated by the degradation degree estimation unit exceeds a predetermined threshold; and an output unit that outputs the result of determination made by the determination unit.
Inventors:
MIZUKAMI NAO (JP)
Application Number:
PCT/JP2019/012085
Publication Date:
September 26, 2019
Filing Date:
March 22, 2019
Export Citation:
Assignee:
ISUZU MOTORS LTD (JP)
International Classes:
F01N3/18; B01D53/94; F01N3/08; F02D45/00
Foreign References:
| JP2018021514A | 2018-02-08 | |||
| JP2011247134A | 2011-12-08 | |||
| JP2012237291A | 2012-12-06 | |||
| JP2000064826A | 2000-02-29 |
Attorney, Agent or Firm:
WASHIDA, Kimihito (JP)
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