公开(公告)号：US20100292036A1

公开(公告)日：2010-11-18

申请号：US12864256

申请日：2008-12-09

申请人： Marco Kowalski ,  Roman Kern ,  Andreas Hempfling ,  Sebastian Block

发明人： Marco Kowalski ,  Roman Kern ,  Andreas Hempfling ,  Sebastian Block

IPC分类号： F16H7/08

CPC分类号： F16H7/0836 ,  F16H2007/0817

摘要： A tensioning device for the endless drive in a timing system on a motor vehicle, which has a tensioning piston that can move along a path axis in a housing, within which a pressure chamber is located which houses a working medium which brings about a movement of the tensioning piston in the housing and has a valve seat, connected to the exterior of the tensioning piston by an outlet and accommodating a valve body essentially matching the shape of the valve seat. The valve body is tapered along the axial path axis to the outlet, which allows for a large chamber between the valve body and the valve seat. The path that the working medium, on bleeding gas bubbles from the same, takes from the pressure chamber to the outlet is longer, which increases the hydraulic resistance and restricts and limits emptying of working medium from the tensioning piston.

摘要翻译： 一种用于在机动车辆上的定时系统中的无级驱动的张紧装置，其具有能够沿着壳体中的路径轴线移动的张紧活塞，在该壳体内设置有压力室，所述压力室容纳工作介质， 壳体中的张紧活塞并具有阀座，通过出口连接到张紧活塞的外部，并且容纳基本上与阀座形状匹配的阀体。 阀体沿着轴向路径轴线到出口是锥形的，这允许阀体和阀座之间的大腔室。 工作介质从压力室到出口的渗出气泡的路径较长，这增加了液压阻力，限制了工作介质从张紧活塞中排空。