公开(公告)号：US06976638B2

公开(公告)日：2005-12-20

申请号：US10467379

申请日：2002-11-02

申请人： Katja Matz ,  Uwe Schmidt ,  Hubert Greif

发明人： Katja Matz ,  Uwe Schmidt ,  Hubert Greif

IPC分类号： F02M57/02 ,  F02M45/02 ,  F02M45/04 ,  F02M47/02 ,  F02M59/36 ,  F02M63/00 ,  B05B9/00

CPC分类号： F02M47/027 ,  F02M45/02 ,  F02M45/04 ,  F02M57/023 ,  F02M59/366 ,  F02M2200/16 ,  F02M2200/21 ,  F02M2200/28

摘要： A fuel injection system having one high-pressure fuel pump and one fuel injection valve communicating therewith for each engine cylinder. A piston of the fuel pump defines a work chamber which communicates with a pressure chamber of the fuel injection valve, which valve has an injection valve member by which injection openings are controlled, and which valve is movable in an opening direction counter to a closing force by the pressure prevailing in the pressure chamber. A first control valve controls, a connection of the pump work chamber to a relief chamber and a second control valve controls, a connection of a control pressure chamber, communicating with the pump work chamber and defined by a control piston, to a relief chamber. The control piston, controls a flow cross section of the connection of the control pressure chamber to the relief chamber as a function of the stroke of the control piston in such a way that when the injection valve member is in a closing direction, a larger flow cross section is uncovered than when the injection valve member is disposed in an open position.

摘要翻译： 一种燃料喷射系统，具有一个高压燃料泵和一个与每个发动机气缸连通的燃料喷射阀。 燃料泵的活塞限定了与燃料喷射阀的压力室连通的工作室，该工作室具有喷射阀构件，通过该喷射阀构件控制喷射开口，并且该阀可以在打开方向上相对于关闭力移动 通过压力室中的压力。 第一控制阀控制，泵工作室与释放室的连接和第二控制阀控制与泵工作室连通并由控制活塞限定的控制压力室的连接到释放室。 控制活塞根据控制活塞的行程来控制控制压力室与释放室的连接的流动横截面，使得当喷射阀构件处于闭合方向时，较大的流量 与将喷射阀构件设置在打开位置时相比，横截面未被覆盖。