To provide a drive force transmission device of a four-wheel drive vehicle which can improve a problem which may occur when a temperature of a working fluid is out of a proper temperature range.SOLUTION: A drive force transmission device 1 which can adjust a drive force transmitted to an auxiliary drive wheel of a four-wheel drive vehicle 100 comprises: a friction clutch 53; a piston 50 for pressing the friction clutch 53 by the hydraulic pressure of a cylinder chamber 220; a hydraulic unit 8 for supplying a working fluid to the cylinder chamber 220; and a control part 9 for controlling the hydraulic unit 8. In the hydraulic unit 8, a hydraulic pump 81 has an electric motor 82 for operating the hydraulic pump 81 by a motor current from the control part 9, a control valve 83 for pressure-regulating the working fluid supplied to the cylinder chamber 220 according to a control current of the control part 9, and a communication passage 85 for returning the working fluid to a reservoir 80 from a clearance between the hydraulic pump 80 and the control valve 83. When it is determined that a temperature of the working fluid is out of a proper temperature range, the control part 9 rotates the electric motor 82 in a state that the control valve 83 is valve-closed.SELECTED DRAWING: Figure 4

    【課題】作動油の温度が適正な温度範囲外であることにより生じ得る問題を改善することが可能な四輪駆動車の駆動力伝達装置を提供する。【解決手段】四輪駆動車100の補助駆動輪へ伝達される駆動力を調節可能な駆動力伝達装置1は、摩擦クラッチ53と、シリンダ室220の油圧によって摩擦クラッチ53を押圧するピストン50と、シリンダ室220に作動油を供給する油圧ユニット8と、油圧ユニット8を制御する制御部9とを備える。油圧ユニット8は、油圧ポンプ81、制御部9からのモータ電流によって油圧ポンプ81を作動させる電動モータ82、制御部9の制御電流に応じてシリンダ室220に供給される作動油を調圧する制御弁83、及び油圧ポンプ80と制御弁83との間からリザーバ80に作動油を戻す連通路85を有する。制御部9は、作動油の温度が適正な温度範囲外であると判定されたとき、制御弁83を閉弁した状態で電動モータ82を回転させる。【選択図】図4


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    Titel :

    DRIVE FORCE TRANSMISSION DEVICE


    Weitere Titelangaben:

    駆動力伝達装置


    Beteiligte:
    TAKEUCHI YUTA (Autor:in)

    Erscheinungsdatum :

    27.12.2018


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Japanisch


    Klassifikation :

    IPC:    F16D COUPLINGS FOR TRANSMITTING ROTATION , Nicht schaltbare Kupplungen / 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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