Title:
DETECTION DEVICE AND DETECTION METHOD
Document Type and Number:
WIPO Patent Application WO/2021/193431
Kind Code:
A1
Abstract:
A control device 100 is a detection device for detecting cavitation occurring in a fluid in a fluid circulation device 20 provided with fluid passages 21-25 through which a fluid is circulated and a pump 30 that pressure-feeds the fluid through the fluid passages 21-25. This control device is provided with: rotational speed acquisition units 90, 110 that acquire the driving rotational speed of the pump 30; a pressure acquisition unit 91 that acquires the pressure value of the fluid pressure-fed by the pump 30; and a determination unit 120 that determines the occurrence of cavitation when the pressure value acquired by the pressure acquisition unit 91 becomes lower than, by a prescribed threshold value or more, a preset reference discharge pressure value in accordance with the driving rotational speed of the pump 30.
Inventors:
GOTO YASUNOBU (JP)
Application Number:
PCT/JP2021/011375
Publication Date:
September 30, 2021
Filing Date:
March 19, 2021
Export Citation:
Assignee:
ISUZU MOTORS LTD (JP)
International Classes:
F01P11/18; F02D45/00
Foreign References:
| JP2005248854A | 2005-09-15 | |||
| JPS6429299U | 1989-02-21 | |||
| JP2004144042A | 2004-05-20 | |||
| JPH11132041A | 1999-05-18 | |||
| JP2019082157A | 2019-05-30 | |||
| JPH0726953A | 1995-01-27 |
Attorney, Agent or Firm:
IZUMI Michihiro (JP)
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