Title:
DETERMINATION DEVICE AND DETERMINATION METHOD
Document Type and Number:
WIPO Patent Application WO/2024/004082
Kind Code:
A1
Abstract:
A determination device and a determination method of the present invention allow a user to recognize the malfunction of a pressure differential sensor or the removal of an exhaust gas purifier component. The determination device includes: an input unit for acquiring pressure differential information indicating the pressure differential between the upstream and the downstream of an exhaust gas purifier component in an exhaust pipe, and acquiring particulate matter amount information indicating the amount of particulate matter in the exhaust gas flowing on the downstream side of the exhaust gas purifier component; and a determination unit for determining whether the pressure differential is less than a first threshold, and if the pressure differential is less than the first threshold, determining whether the amount of particulate matter is less than a second threshold. The determination unit determines that the pressure differential sensor is malfunctioning if the amount of particulate matter is less than the second threshold, and determines that the exhaust gas purifier component has been removed from the exhaust pipe if the amount of particulate matter is not less than the second threshold.
Inventors:
MATSUO MEGUMU (JP)
KAKEI YUKIHISA (JP)
MATSUMOTO TOSHIO (JP)
KAKEI YUKIHISA (JP)
MATSUMOTO TOSHIO (JP)
Application Number:
PCT/JP2022/025981
Publication Date:
January 04, 2024
Filing Date:
June 29, 2022
Export Citation:
Assignee:
ISUZU MOTORS LTD (JP)
International Classes:
F01N3/18; F02D45/00
Domestic Patent References:
| WO2015093603A1 | 2015-06-25 |
Foreign References:
| JP2016196835A | 2016-11-24 | |||
| JP2008215535A | 2008-09-18 |
Attorney, Agent or Firm:
WASHIDA & ASSOCIATES (JP)
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