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    BREMSKRAFTVERSTÄRKER
    1.
    发明公开
    BREMSKRAFTVERSTÄRKER 有权

    公开(公告)号：EP2531387A1

    公开(公告)日：2012-12-12

    申请号：EP11702970.2

    申请日：2011-02-01

    申请人： Continental Teves AG & Co. oHG

    发明人： BECKER, Stephan ,  JAKOBI, Ralf ,  KLEY, Uwe ,  KRÄMER, Horst ,  LOEW, Albin ,  MAINZ, Sven ,  RÖSSLER, Thomas ,  WAGNER, Wilfried

    IPC分类号： B60T13/569 ,  B60T13/72

    CPC分类号： F15B9/10 ,  B60T13/563 ,  B60T13/569 ,  B60T13/72

    摘要： The invention relates to a pneumatic braking force amplifier for a motor vehicle, having an amplifier housing (1), the interior thereof being divided by at least one axially displaceable wall (2, 39) that can have a pneumatic differential pressure applied thereto into at least one working chamber (3, 41) and at least one vacuum chamber (4), having a control valve (12) disposed in a control housing and controlling the differential pressure for connecting the working chamber (3, 41) to the vacuum chamber (4) or to the atmosphere, wherein the displaceable wall (2, 39) comprises a diaphragm disc (8) and a rolling diaphragm (18, 38), and wherein the working chamber (3, 41) is sealed by means of a sealing ring (13, 47) contacting the control housing (5) and tensioned in the radial direction relative to a longitudinal axis L of the braking force amplifier. In order to prevent stick-slip and dynamic effects that arise in particular at the sealing ring and that cause background noise, according to the invention means are provided for reducing a surface of the displaceable wall (2, 39) that is effectively acted upon by subdividing the working chamber (3, 4) into a prechamber (30, 42) and a main chamber (31, 43) at the beginning of an actuation of the braking force amplifier.

    摘要翻译： 用于机动车辆的气动制动力放大器技术领域本发明涉及一种用于机动车辆的气动制动力放大器，其具有放大器壳体（1），其内部被至少一个可轴向移动的壁（2,39） 至少一个工作室（3,41）和至少一个真空室（4），其具有设置在控制室中的控制阀（12）并且控制差压以将工作室（3,41）连接到真空室 （4）或大气，其中所述可移动壁（2,39）包括隔膜盘（8）和滚动隔膜（18,38），并且其中所述工作室（3,41）借助于 密封环（13,47）接触控制壳体（5）并且相对于制动力放大器的纵向轴线L沿径向方向张紧。 为了防止特别是在密封环处产生的并且引起背景噪声的粘滑和动态效应，根据本发明，提供了用于减小可有效作用于可移动壁（2,39）的表面的装置 在制动力放大器的启动开始时，将工作室（3,4）细分为预燃室（30,42）和主室（31,43）。