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Patent Searching and Data


Title:
FAULT DIAGNOSIS DEVICE, PUMP UNIT PROVIDED WITH SAME, AND FAULT DIAGNOSIS METHOD
Document Type and Number:
WIPO Patent Application WO/2019/022252
Kind Code:
A1
Abstract:
A fault diagnosis device, which diagnoses faults in a swash plate pump, comprises: a history acquisition unit that, on the basis of an intake flow rate detected by a flow rate calculation unit, acquires actual history data indicating the change over time in the intake flow rate or the intake pressure within a prescribed time period; and a fault detection unit that, on the basis of the actual history data acquired by the history acquisition unit, detects occurrences of anomalies between a piston and a shoe.

Inventors:
KURODA, Tadahiko
MASUDA, Takayuki
MATSUURA, Takeshi
KATO, Yuki
Application Number:
JP2018/028345
Publication Date:
January 31, 2019
Filing Date:
July 27, 2018
Export Citation:
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Assignee:
KAWASAKI JUKOGYO KABUSHIKI KAISHA (1-1 Higashikawasaki-cho 3-chome, Chuo-ku Kobe-sh, Hyogo 70, 〒6508670, JP)
International Classes:
F04B51/00; F04B1/22; F04B1/30; F04B49/10
Foreign References:
JP2016053308A2016-04-14
JP3014560B22000-02-28
JP2002242849A2002-08-28
JPH10196550A1998-07-31
JPH1054371A1998-02-24
Attorney, Agent or Firm:
PATENT CORPORATE BODY ARCO PATENT OFFICE (3rd Fl, Bo-eki Bldg. 123-1, Higashimachi, Chuo-ku, Kobe-sh, Hyogo 31, 〒6500031, JP)
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