Title:
WORK MACHINE PROVIDED WITH ENGINE
Document Type and Number:
WIPO Patent Application WO/2019/181160
Kind Code:
A1
Abstract:
Provided is a work machine (M) capable of detecting an abnormality in the amount of soot in exhaust gas further upstream in an exhaust pipe than an exhaust gas aftertreatment device. The work machine (M) comprises: an exhaust gas sensor (14) which detects the amount of soot contained in exhaust gas (11g) between an engine (11) and an exhaust gas aftertreatment device (13), and generates a soot amount detection signal; and a controller (50) into which said detection signal is input. The controller (50) has an abnormality determination unit which performs abnormality determination for determining whether or not the detected soot amount is abnormal, and a threshold setting unit which sets a soot amount threshold as the threshold for the abnormality determination. The abnormality determination unit is configured so as to determine an abnormality when the value of the soot amount corresponding to the soot amount detection signal is larger than the soot amount threshold.
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Inventors:
HIROZAWA MITSUNORI
KAGOSHIMA MASAYUKI
KAGOSHIMA MASAYUKI
Application Number:
PCT/JP2019/001130
Publication Date:
September 26, 2019
Filing Date:
January 16, 2019
Export Citation:
Assignee:
KOBELCO CONSTR MACH CO LTD (JP)
International Classes:
F01N3/023; F01N3/00; E02F9/00
Foreign References:
| US20100101409A1 | 2010-04-29 | |||
| JP2013024097A | 2013-02-04 | |||
| JP2010223158A | 2010-10-07 | |||
| JP2017096215A | 2017-06-01 | |||
| JP2013234642A | 2013-11-21 |
Other References:
See also references of EP 3739177A4
Attorney, Agent or Firm:
KOTANI, Etsuji et al. (JP)
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