Title:
SUPERCHARGER ABNORMALITY DETERMINATION DEVICE AND SUPERCHARGER ABNORMALITY DETERMINATION METHOD
Document Type and Number:
WIPO Patent Application WO/2022/202431
Kind Code:
A1
Abstract:
A supercharger abnormality determination device (24) for determining an abnormal state of a supercharger, the supercharger abnormality determination device comprising: a supercharger rotational speed acquisition unit (28) configured to acquire time series data on the rotational speed of the supercharger in a state in which an engine load is within a certain range; a rotational speed temporal change rate calculation unit (30) for calculating, on the basis of the time series data on the rotational speed of the supercharger acquired by the supercharger rotational speed acquisition unit, time series data on a temporal change rate of the rotational speed of the supercharger; and an abnormality determination unit (40) configured to determine occurrence of an abnormality inside the supercharger if the time series data on the temporal change rate of the rotational speed of the supercharger calculated by the rotational speed temporal change rate calculation unit includes a predetermined number of times or more of switching of positive and negative values within a first unit time.
Inventors:
TATSUMI KATSUHIKO (JP)
MATSUO TETSUYA (JP)
KANAZAWA SHINGO (JP)
TOMITA ISAO (JP)
MATSUO TETSUYA (JP)
KANAZAWA SHINGO (JP)
TOMITA ISAO (JP)
Application Number:
PCT/JP2022/011199
Publication Date:
September 29, 2022
Filing Date:
March 14, 2022
Export Citation:
Assignee:
MITSUBISHI HEAVY IND MARINE MACHINERY & EQUIPMENT CO LTD (JP)
International Classes:
F02B39/16; F02D43/00; F02D45/00
Domestic Patent References:
| WO2017154105A1 | 2017-09-14 | |||
| WO2007145021A1 | 2007-12-21 | |||
| WO2018146827A1 | 2018-08-16 |
Foreign References:
| JP2015190413A | 2015-11-02 | |||
| JPS6415749U | 1989-01-26 | |||
| JP2016020672A | 2016-02-04 | |||
| JP2013019319A | 2013-01-31 |
Attorney, Agent or Firm:
SSIP PATENT ATTORNEY CORPORATION (JP)
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