公开(公告)号：US06520143B2

公开(公告)日：2003-02-18

申请号：US09849620

申请日：2001-05-07

申请人： Andreas Wengert

发明人： Andreas Wengert

IPC分类号： F02M4504

CPC分类号： F02M45/08 ,  F02M45/04 ,  F02M55/02 ,  Y10T137/7928

摘要： A preinjection valve with a valve body, in which an inlet conduit is embodied which can be filled with fuel at high pressure via a high-pressure pump. An outlet conduit is embodied in the valve body and discharges laterally into the inlet conduit and communicates with a fuel injection valve via a high-pressure line. A preinjection valve member is guided sealingly in the inlet conduit and is moved counter to a closing force by the fuel pressure in the inlet conduit and after executing a preinjection stroke (hv) comes to rest on a deflection valve member guided, likewise sealingly, in the inlet conduit. By the motion of the preinjection valve member, a preinjection quantity is pumped into the outlet conduit and delivered to the fuel injection valve. When a main injection pressure in the inlet conduit is attained, the deflection valve member is moved by the fuel pressure until, on traversing an opening stroke (h0), the communication from the inlet conduit into the outlet conduit is opened, and fuel can flow to the fuel injection valve.

公开(公告)号：US06520153B1

公开(公告)日：2003-02-18

申请号：US09807921

申请日：2001-07-27

申请人： Bernd Mahr ,  Martin Kropp

发明人： Bernd Mahr ,  Martin Kropp

IPC分类号： F02M4504

CPC分类号： F02M63/0225 ,  F02M41/16 ,  F02M45/02 ,  F02M45/04 ,  F02M63/0007 ,  F02M2200/40

摘要： In a fuel injection system for an internal combustion engine, in which fuel can be injected at at least two differently high fuel pressures via injectors into the combustion chamber of the engine, having a central distributor device for distributing the fuel to the individual injectors and having a central pressure reservoir for the lower fuel pressure, one valve unit for switchover between the two fuel pressures is provided locally for each injector individually. Furthermore, the central distributor device for the higher fuel pressure is disposed parallel to the central pressure reservoir for the lower fuel pressure. To enlarge the injection window for the pre-injection and the post-injection, the lower fuel pressure is metered from the central pressure reservoir, without going by way of the distributor device.

摘要翻译： 在用于内燃机的燃料喷射系统中，其中燃料可以通过喷射器以至少两个不同高的燃料压力喷射到发动机的燃烧室中，其具有用于将燃料分配到各个喷射器的中心分配器装置，并具有 为每个喷射器单独地设置用于较低燃料压力的中央压力储存器，用于在两个燃料压力之间切换的一个阀单元。 此外，用于较高燃料压力的中央分配器装置平行于用于较低燃料压力的中央压力储存器设置。 为了扩大预注射和后注射的注射窗口，较低的燃料压力从中央压力储存器计量，而不经由分配器装置。

公开(公告)号：US06308689B1

公开(公告)日：2001-10-30

申请号：US09523374

申请日：2000-03-10

申请人： Ulrich Augustin

发明人： Ulrich Augustin

IPC分类号： F02M4504

CPC分类号： F02M63/0005 ,  F02M45/12 ,  F02M63/0003 ,  F02M63/0029

摘要： An injection valve for an internal combustion engine, including a servo valve having a movable valve element providing a constriction in the fuel path to the injection nozzle during an initial phase of the injection. The movable valve element includes a piston-like projection above a groove that, during the main phase of the injection period, emerges from a bore and thereby opens a direct path for the fuel that bypasses the constriction.

摘要翻译： 一种用于内燃机的喷射阀，包括具有可动阀元件的伺服阀，该可动阀元件在喷射的初始阶段期间在喷射喷嘴的燃料路径中提供收缩。 可移动阀元件包括在凹槽上方的活塞状突起，其在喷射周期的主相期间从孔中排出，从而打开绕过收缩部的燃料的直接路径。