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
MASUDA TAKAYUKI
MATSUURA TAKESHI
KATO YUKI
Application Number:
PCT/JP2018/028345
Publication Date:
January 31, 2019
Filing Date:
July 27, 2018
Export Citation:
Assignee:
KAWASAKI HEAVY IND LTD (JP)
International Classes:
F04B51/00; F04B1/22; F04B1/30; F04B49/10
Foreign References:
| JP2016053308A | 2016-04-14 | |||
| JP3014560B2 | 2000-02-28 | |||
| JP2002242849A | 2002-08-28 | |||
| JPH10196550A | 1998-07-31 | |||
| JPH1054371A | 1998-02-24 |
Attorney, Agent or Firm:
PATENT CORPORATE BODY ARCO PATENT OFFICE (JP)
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