To improve practicality of a vehicular suspension device mounted with a hydraulic damper and an electromagnetic actuator.SOLUTION: A vehicular suspension device: estimates hydraulic pressure P inside a hydraulic damper on the basis of a stroke speed vS which is a relative movement speed between an upper section and a lower section of a spring (S3); and controls actuator force FA in a manner that makes the stroke speed when the estimated hydraulic pressure is equal to or higher than set pressure P0 lower than the stroke speed when the estimated hydraulic pressure is less than the set pressure (S9). Even when a vehicle has a high risk that a significant increase in the hydraulic pressure inside the hydraulic damper causes hydraulic liquid to leak through a sealing section as is the case in traveling on an undulating road, the vehicular suspension device can control the actuator force so as to reduce the stroke speed, thereby curbing the increase in the hydraulic pressure inside the hydraulic damper and preventing the hydraulic liquid from leaking.SELECTED DRAWING: Figure 3

    【課題】 液圧式ダンパと電磁式アクチュエータとを備えた車両用サスペンション装置の実用性を向上させる。【解決手段】 ばね上部とばね下部との相対動作速度であるストローク速度vSに基づいて、液圧式ダンパの内部の液圧Pを推定し(S3)、その推定した液圧が設定圧P0以上となる場合に、その設定圧未満である場合に比較して、ストローク速度がより低くなるなるようにアクチュエータ力FAを制御する(S9)。車両が起伏の大きな路面を走行する場合等、液圧式ダンパ内の液圧が相当に高くなってシール部からの作動液の漏れ出し等が引き起こされる可能性が高い場合に、そのストローク速度をより低くするようにアクチュエータ力が制御されるため、液圧式ダンパ内部の液圧の上昇が抑制され、作動液の漏れ等を防止することが可能となる。【選択図】 図3


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    Title :

    VEHICULAR SUSPENSION DEVICE


    Additional title:

    車両用サスペンション装置


    Contributors:

    Publication date :

    2020-09-10


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60G VEHICLE SUSPENSION ARRANGEMENTS , Radaufhängungen und Federungen für Fahrzeuge / F16F SPRINGS , Federn



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