To provide a service life determination device that can determine the service life of a pressure accumulating tank.SOLUTION: An ECU 4 is configured to determine the service life of a pressure accumulating tank. The pressure accumulating tank has a gas chamber filled with gas, an oil chamber connected to a common passage, and a piston that partitions between the gas chamber and the oil chamber. The pressure accumulating tank is configured to store hydraulic oil in the oil chamber and to discharge the hydraulic oil from the oil chamber. An ECU 4 calculates a movement amount of the piston on the basis of the volumetric change in the gas chamber. The ECU 4 determines that the service life of the pressure accumulating tank has expired when the integrated value of the calculated movement amount exceeds a threshold.SELECTED DRAWING: Figure 4

    【課題】蓄圧タンクの寿命を判定することが可能な寿命判定装置を提供する。【解決手段】ECU4は、蓄圧タンクの寿命を判定するように構成されている。蓄圧タンクは、ガスが充填されたガス室と、共通通路と接続される油室と、ガス室および油室を仕切るピストンとを有する。蓄圧タンクは、油室に作動油を蓄えるとともに、油室の作動油を放出可能に構成されている。ECU4は、ガス室の体積変化に基づいて、ピストンの移動量を算出する。ECU4は、算出された移動量の積算値が閾値を超過した場合に、蓄圧タンクの寿命が到来したと判定する。【選択図】図4


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    Title :

    SERVICE LIFE DETERMINATION DEVICE AND SERVICE LIFE DETERMINATION METHOD


    Additional title:

    寿命判定装置および寿命判定方法


    Contributors:
    TANAKA SHOGO (author) / KANDA AKIRA (author) / KANDA MASASHI (author) / TANAKA RYOKO (author) / ENDO TAKUMA (author)

    Publication date :

    2024-06-27


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60G VEHICLE SUSPENSION ARRANGEMENTS , Radaufhängungen und Federungen für Fahrzeuge



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