To increase the accuracy of determining an abnormality in an oil machine.SOLUTION: A controller (60) calculates a Hersey number on the basis of an oil pressure detected by a pressure detector (41), an operational rate detected by an operational rate detector (43), and a kinetic viscosity acquired by a kinetic viscosity acquisition unit (45). The controller 60 calculates the functional value f (HerseyNum) corresponding to the calculated Hersey number on the basis of the relation (R). The controller (60) determines whether an oil machine (20) is abnormal on the basis of comparison in size between the amount of abrasive powder dNFe/dt detected by an abrasion powder amount detector (47) and the function value f (HerseyNum) (step S22).SELECTED DRAWING: Figure 5

    【課題】油機の異常判定の精度を向上させる。【解決手段】コントローラ(60)は、圧力検出部(41)に検出された油圧、作動速度検出部(43)に検出された作動速度、および動粘度取得部(45)に取得された動粘度に基づいて、ハージー数を算出する。コントローラ60は、関係(R)に基づいて、算出したハージー数に対応する関数値f(HerseyNum)を算出する。コントローラ(60)は、摩耗粉量検出部(47)に検出された摩耗粉量dNFe/dtと、関数値f(HerseyNum)と、の大きさの比較(ステップS22)に基づいて、油機(20)が異常であるか否かを判定する。【選択図】図5


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    Title :

    OIL MACHINE ABNORMALITY DETERMINATION DEVICE, METHOD FOR DETERMINING ABNORMALITY IN OIL MACHINE, AND OIL MACHINE ABNORMALITY DETERMINATION PROGRAM


    Additional title:

    油機異常判定装置、油機異常判定方法、および油機異常判定プログラム


    Contributors:

    Publication date :

    2020-09-10


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    G01M TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES , Prüfen der statischen oder dynamischen Massenverteilung rotierender Teile von Maschinen oder Konstruktionen / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES



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