公开(公告)号：US06637670B2

公开(公告)日：2003-10-28

申请号：US10147082

申请日：2002-05-17

申请人： Nestor Rodriguez-Amaya ,  Roger Potschin ,  Jürgen Gruen ,  Ulrich Projahn

发明人： Nestor Rodriguez-Amaya ,  Roger Potschin ,  Jürgen Gruen ,  Ulrich Projahn

IPC分类号： F02M4702

CPC分类号： F02M63/0045 ,  F02M45/00 ,  F02M47/027 ,  F02M59/366

摘要： The fuel injection device has a fuel pump, which has a pump piston that is driven by an engine and delimits a pump working chamber, which is supplied with fuel from a fuel tank and is connected to a fuel injection valve, which has an injection valve member that controls at least one injection opening and can be moved by the pressure generated in the pump working chamber in an opening direction counter to a closing force. A first control valve controls a connection of the pump working chamber to a discharge chamber, and a second control valve controls the pressure prevailing in a control pressure chamber of the fuel injection valve. The connection of the pump working chamber further contains a pressure-holding valve, which maintains a pressure that is higher than the pressure prevailing in the discharge chamber.

摘要翻译： 燃料喷射装置具有燃料泵，该燃料泵具有由发动机驱动的泵活塞，并且限定了从燃料箱供给燃料并连接到燃料喷射阀的泵工作室，该燃料喷射阀具有喷射阀 控制至少一个喷射开口的部件，并且可以通过与打开方向相反的关闭力在泵工作室中产生的压力移动。 第一控制阀控制泵工作室与排出室的连接，第二控制阀控制燃料喷射阀的控制压力室中的压力。 泵工作室的连接还包括压力保持阀，其保持比排出室中的压力高的压力。