公开(公告)号：US20130112767A1

公开(公告)日：2013-05-09

申请号：US13290509

申请日：2011-11-07

申请人： Sana Mahmood ,  Zhenyu Li ,  Michael Curtis Herr ,  Gregory William Hefler ,  Linda Angharad Williams

发明人： Sana Mahmood ,  Zhenyu Li ,  Michael Curtis Herr ,  Gregory William Hefler ,  Linda Angharad Williams

IPC分类号： F02M43/00

CPC分类号： F02M47/027 ,  F02M55/008 ,  F02M2200/28

摘要： A common rail fuel injector includes a needle valve member that moves to open and close nozzle outlets for a fuel injection event responsive to pressure in a needle control chamber. Between injection events, the needle control chamber is fluidly connected to the fuel inlet by a first pathway that includes a Z orifice, and fluidly connected to the fuel inlet by a second pathway that includes an F orifice, an intermediate chamber and an A orifice. During an injection event, the needle control chamber is fluidly connected to a drain outlet by a third pathway that includes the A orifice, the intermediate chamber an E orifice and a buffer chamber, which may assist in avoiding cavitation erosion in a sensitive area associated with a flat control valve seat. Different performance characteristics are achieved by adjusting the sizes of the respective of F, A, Z and E orifices.

摘要翻译： 共轨燃料喷射器包括针阀构件，该针阀构件响应于针控制室中的压力移动以打开和关闭用于燃料喷射事件的喷嘴出口。 在注射事件之间，针控制室通过包括Z孔的第一路径流体地连接到燃料入口，并且通过包括F孔，中间室和A孔的第二路径流体连接到燃料入口。 在注射事件期间，针控制室通过包括A孔，中间室，E孔和缓冲室的第三路径流体地连接到排水口，该孔可有助于避免在与 平面控制阀座。 通过调整F，A，Z和E各孔的大小来实现不同的性能特征。

公开(公告)号：US08690075B2

公开(公告)日：2014-04-08

申请号：US13290509

申请日：2011-11-07

申请人： Sana Mahmood ,  Zhenyu Li ,  Michael Curtis Herr ,  Gregory William Hefler ,  Linda Angharad Williams

发明人： Sana Mahmood ,  Zhenyu Li ,  Michael Curtis Herr ,  Gregory William Hefler ,  Linda Angharad Williams

IPC分类号： F02M47/02 ,  F02M51/06 ,  F02D7/00

CPC分类号： F02M47/027 ,  F02M55/008 ,  F02M2200/28

摘要： A common rail fuel injector includes a needle valve member that moves to open and close nozzle outlets for a fuel injection event responsive to pressure in a needle control chamber. Between injection events, the needle control chamber is fluidly connected to the fuel inlet by a first pathway that includes a Z orifice, and fluidly connected to the fuel inlet by a second pathway that includes an F orifice, an intermediate chamber and an A orifice. During an injection event, the needle control chamber is fluidly connected to a drain outlet by a third pathway that includes the A orifice, the intermediate chamber an E orifice and a buffer chamber, which may assist in avoiding cavitation erosion in a sensitive area associated with a flat control valve seat. Different performance characteristics are achieved by adjusting the sizes of the respective of F, A, Z and E orifices.

摘要翻译： 共轨燃料喷射器包括针阀构件，该针阀构件响应于针控制室中的压力移动以打开和关闭用于燃料喷射事件的喷嘴出口。 在注射事件之间，针控制室通过包括Z孔的第一路径流体地连接到燃料入口，并且通过包括F孔，中间室和A孔的第二路径流体地连接到燃料入口。 在注射事件期间，针控制室通过包括A孔，中间室，E孔和缓冲室的第三路径流体地连接到排水口，该孔可有助于避免在与 平面控制阀座。 通过调整F，A，Z和E各孔的大小来实现不同的性能特征。