PROBLEM TO BE SOLVED: To further enhance torque rod noise/vibration reduction performance for reducing transmission of the torque fluctuation of an engine to a vehicle body.SOLUTION: To a torque rod coupled between an engine and a cabin-side frame of a vehicle body, a cylindrical magnetorheological body surrounding the torque rod is fixedly attached, a coil and a mass member covering the coil being fixedly attached to an outer circumferential surface of the magnetorheological body. The elastic modulus of the magnetorheological body increases by applying a magnetic field generated by a current carried across the coil to the magnetorheological body. A controller supplying the current to the coil controls the current to be carried across the coil on the basis of an input of an engine rotational speed. The magnetic field applied to the magnetorheological body is controlled to regulate the elastic modulus of the magnetorheological body, whereby the mass member is allowed to make a reciprocating motion in a phase cancelling vibration input to the torque rod. It is, therefore, possible to suppress the transmission of the vibration input to the torque rod to a support body.

    【課題】エンジンのトルク変動が車体へ伝達することを低減するトルクロッドの騒音振動低減性能をより一層向上する。【解決手段】エンジンと車体の車室側のフレームとの間に連結されたトルクロッドに、そのロッドを外囲する円筒状の磁気粘弾性体を固着し、磁気粘弾性体の外周面に、コイル、及びコイルを覆うマス部材を固着する。磁気粘弾性体は、コイルに流れる電流により生じる磁場が印加されることにより弾性率が増加するものである。コイルに電流を供給する制御器により、エンジン回転数の入力に基づいてコイルに流す電流を制御する。磁気粘弾性体に印加する磁場を制御して磁気粘弾性体の弾性率を調整することで、マス部材を、トルクロッドに入力される振動を相殺する位相で往復運動させることができるため、トルクロッドに入力される振動が支持体に伝達されるのを抑制することができる。【選択図】図3


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    Title :

    TORQUE ROD VIBRATION REDUCER


    Additional title:

    トルクロッドの振動低減装置


    Contributors:

    Publication date :

    2015-07-02


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    F16F SPRINGS , Federn / 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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