In an aspect, a tensioner for tensioning an endless drive member on an engine, is provided, comprising a base that mounts to the engine, a tensioner arm that is pivotally connected to the base for pivotal movement about a tensioner arm axis, a pulley rotatably mounted to the tensioner arm for rotation about a pulley axis that is spaced from the tensioner arm axis, a tensioner spring and a damping member. The tensioner spring is positioned to urge the tensioner arm into an endless drive member. The spring has a first helical end and a second helical end. The first helical end is positioned to transfer force with a first spring end force transfer surface on the base and the second helical end is positioned to transfer force with a second spring end force transfer surface on the tensioner arm. The damping member is positioned in a surrounding relationship with the tensioner spring. The damping member includes a spring force adjustment member having a first end face and a second end face spaced from the first end face by a selected angular spacing. The damping member includes a first portion that contains the spring force adjustment member and that is generally rigid, and at least one second portion that is adjacent the first member and that is flexibly joined to the first member. The spring force adjustment member is positioned between one of the spring ends and one of the spring end force transfer surfaces on one of the base and the tensioner arm. The damping member is frictionally engaged with the other of the base and the tensioner arm during pivotal movement of the tensioner arm relative to the base.


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    Titel :

    Tensioner with improved damping


    Beteiligte:
    MA WEI (Autor:in) / JOSEPH KACY E (Autor:in)

    Erscheinungsdatum :

    2018-05-29


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    F16H Getriebe , GEARING / 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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