Title:
DIAGNOSTIC DEVICE FOR EXHAUST GAS AFTERTREATMENT DEVICE, DIAGNOSTIC METHOD FOR EXHAUST GAS AFTERTREATMENT DEVICE, AND DIAGNOSTIC PROGRAM FOR EXHAUST GAS AFTERTREATMENT DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/149285
Kind Code:
A1
Abstract:
A diagnostic device (1) for an exhaust gas aftertreatment device comprises: temperature detection devices (2) that detect filter inlet–side temperature and filter outlet–side temperature; a differential pressure detection device (3) that detects the differential pressure between filter inlet–side pressure and filter outlet–side pressure; an intake air pressure detection device (4) that detects the intake air pressure of an engine (51); and a controller (71) that determines whether there is a malfunction in an exhaust gas aftertreatment device (10) on the basis of values detected by the temperature detection devices (2), the differential pressure detection device (3), and the intake air pressure detection device (4).
Inventors:
HAMAMOTO RYO
NAKAGAWA TOMOHIRO
ENDO KAZUOMI
TOGO HIROSHI
NAKAGAWA TOMOHIRO
ENDO KAZUOMI
TOGO HIROSHI
Application Number:
PCT/JP2023/002124
Publication Date:
August 10, 2023
Filing Date:
January 24, 2023
Export Citation:
Assignee:
KOBELCO CONSTR MACH CO LTD (JP)
International Classes:
F01N3/00; F01N3/023; F02D45/00; G06F21/64
Domestic Patent References:
| WO2018062363A1 | 2018-04-05 |
Foreign References:
| JP2016079811A | 2016-05-16 | |||
| JP2007292013A | 2007-11-08 | |||
| JP2015148182A | 2015-08-20 | |||
| JP2017153082A | 2017-08-31 |
Attorney, Agent or Firm:
KOTANI, Masataka et al. (JP)
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