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    • 3. 发明申请
    • EXHAUST GAS RETURN VALVE
    • 废气再循环阀
    • WO1997032125A1
    • 1997-09-04
    • PCT/DE1996001775
    • 1996-09-19
    • ROBERT BOSCH GMBHKRIMMER, ErwinHEZEL, BrunoWIZGALL, EberhardMIEHLE, TilmanJAUERNIG, Peter
    • ROBERT BOSCH GMBH
    • F02M25/07
    • F02M26/61F02M26/53F02M26/67F02M26/68
    • The invention concerns an exhaust gas return valve whose valve member (15) cooperates with a valve seat (13) of a muff (8) of an exhaust gas return pipe (6), the muff (8) projecting into a pipe (1) of the intake system of an internal combustion engine, and the valve seat facing towards the inlet end of the exhaust gas return pipe (6). In this way, a valve member (15) of the exhaust gas return valve is acted upon by exhaust gas pressure in the closure direction, additionally to a pressure spring (29) against which an armature (25) of an electromagnet (20) acts in the opening direction. In order to equalize the forces acting in the closure direction, the exhaust gas is guided via a duct (42) in the valve stem (17) into a control space (41) which is sealed with respect to the pressure in the pipe (1) by a movable wall (36) with an operating surface which corresponds substantially to the operating surface of the valve member (15). In this way, the forces are equalized such that the control of the exhaust gas return valve depends only on the electromagnetic forces and the force of the pressure spring (29).
    • 它提出了一种排气再循环阀,具有颈部的阀座(13)(8)的排气再循环管线(6)协同操作所述阀构件(15),其中,所述连接件(8)在管(1)的内燃机上升的进气系统,并且所述阀座的 所述排气再循环管路的入口侧(6)具有。 排气再循环阀的阀件(15)通过在关闭方向上的排气压力从而采取行动,除了压缩弹簧(29)相对的电磁铁(20)作用在打开方向上的一个电枢(25)。 为了补偿在闭合方向上作用的力通过阀杆(17)的通道(42)转换成控制腔迫使废气(41)通过可动壁被引导(36)相对于压力在管(1)被关闭用 有效面积,其基本上对应于所述阀构件(15)的有源表面。 一个从而获得力,使得所述排气再循环阀的控制只取决于电磁力和压缩弹簧(29)的力的平衡。