公开(公告)号：US5687693A

公开(公告)日：1997-11-18

申请号：US707804

申请日：1996-08-30

申请人： Shikui K. Chen ,  Gregory W. Hefler

发明人： Shikui K. Chen ,  Gregory W. Hefler

IPC分类号： F02G5/00 ,  F02M45/04 ,  F02M47/02 ,  F02M47/04 ,  F02M57/02 ,  F02M59/10 ,  F02M59/36 ,  F02M59/46 ,  F02M63/00 ,  F02M63/02 ,  F02M41/00 ,  F16K31/40

CPC分类号： F02G5/00 ,  F02M45/04 ,  F02M47/027 ,  F02M47/043 ,  F02M57/025 ,  F02M59/105 ,  F02M59/366 ,  F02M59/466 ,  F02M63/0017 ,  F02M63/0029 ,  F02M63/0042 ,  F02M63/0045 ,  F02M63/0049 ,  F02M63/0061 ,  F02B2275/14 ,  F02M2200/21 ,  F02M2200/502 ,  Y02T10/123 ,  Y02T10/166

摘要： A hydraulically actuated fuel injector includes an injector body having an actuation fluid inlet, an actuation fluid cavity, a nozzle chamber open to a nozzle outlet and a needle control chamber. A hydraulic means within the injector pressurizes fuel in the nozzle chamber. The hydraulic means includes an actuation fluid control valve having a solenoid and is moveable between a first position in which the actuation fluid inlet is open to the actuation fluid cavity and a second position in which the actuation fluid inlet is closed to the actuation fluid cavity. A needle valve member is positioned to reciprocate in the nozzle chamber between an open position in which the nozzle outlet is open and a closed position in which the nozzle outlet is closed. The needle valve member includes a closing hydraulic surface exposed to pressure in the needle control chamber. A needle control valve that also utilizes the same solenoid is attached to the injector body and moveable between an off position in which the needle control chamber is opened to a source of high pressure fluid and an on position in which the needle control chamber is opened to a low pressure passage. The slower response time of the actuation fluid control valve allows for direct control of the fast responding needle valve.

摘要翻译： 液压致动的燃料喷射器包括具有致动流体入口，致动流体腔，到喷嘴出口开口的喷嘴室和针控制室的喷射器主体。 注射器内的液压装置对喷嘴室中的燃料加压。 液压装置包括具有螺线管的致动流体控制阀，并且可在致动流体入口与致动流体腔相通的第一位置和致动流体入口关闭到致动流体腔的第二位置之间移动。 针阀构件被定位成在喷嘴室中在喷嘴出口打开的打开位置和喷嘴出口关闭的关闭位置之间往复运动。 针阀构件包括暴露于针控制室内的压力的关闭液压表面。 也使用相同螺线管的针控制阀被附接到喷射器主体，并且可以在针控制室打开的关闭位置与高压流体源之间以及针控制室打开的打开位置之间移动 低压通道。 致动流体控制阀的较慢的响应时间允许直接控制快速响应的针阀。

公开(公告)号：US06575137B2

公开(公告)日：2003-06-10

申请号：US10167140

申请日：2002-06-11

申请人： Gregory W. Hefler ,  Shikui K. Chen

发明人： Gregory W. Hefler ,  Shikui K. Chen

IPC分类号： F02M3704

CPC分类号： F02M57/026 ,  F02B2275/14 ,  F02G5/00 ,  F02M45/04 ,  F02M45/08 ,  F02M47/027 ,  F02M57/025 ,  F02M59/105 ,  F02M59/366 ,  F02M59/466 ,  F02M59/468 ,  F02M63/0049 ,  Y02T10/123 ,  Y02T10/166

摘要： A hydraulically actuated fuel injector has an injector body including a barrel and defining a nozzle chamber, a needle control chamber, and a nozzle outlet that opens to the nozzle chamber. The injector body further includes an actuation fluid inlet and an actuation fluid drain. A barrel defines an actuation fluid cavity and a piston bore, which includes an upper bore and a lower bore. Fuel is hydraulically pressurized in the nozzle chamber. A piston with a stepped top slides in the piston bore and moves in between a retracted position and an advanced position. A needle valve member in the nozzle chamber moves between an open position and a closed position. The needle valve member includes a closing hydraulic surface exposed to pressure in the needle control chamber. A needle control valve including an actuator is attached to the injector body and moves between an off position in which the needle control chamber is opened to a source of high pressure fluid and an on position in which the needle control chamber is opened to a low pressure passage. An actuation fluid control valve opens and closes the actuation fluid cavity.

公开(公告)号：US06425375B1

公开(公告)日：2002-07-30

申请号：US09562126

申请日：2000-05-01

申请人： Gregory W. Hefler ,  Shikui K. Chen

发明人： Gregory W. Hefler ,  Shikui K. Chen

IPC分类号： F02M3704

CPC分类号： F02M57/026 ,  F02M47/04 ,  F02M57/025 ,  F02M59/105 ,  F02M59/466

摘要： A hydraulically actuated fuel injector has an injector body including a barrel and defining a nozzle chamber, a needle control chamber, and a nozzle outlet that opens to the nozzle chamber. The injector body further includes an actuation fluid inlet and an actuation fluid drain. A barrel defines an actuation fluid cavity and a piston bore, which includes an upper bore and a lower bore. Fuel is hydraulically pressurized in the nozzle chamber. A piston with a stepped top slides in the piston bore and moves in between a retracted position and an advanced position. A needle valve member in the nozzle chamber moves between an open position and a closed position. The needle valve member includes a closing hydraulic surface exposed to pressure in the needle control chamber. A needle control valve including an actuator is attached to the injector body and moves between an off position in which the needle control chamber is opened to a source of high pressure fluid and an on position in which the needle control chamber is opened to a low pressure passage. An actuation fluid control valve opens and closes the actuation fluid cavity.

公开(公告)号：US6065450A

公开(公告)日：2000-05-23

申请号：US53959

申请日：1998-04-02

申请人： Shikui K. Chen ,  Gregory W. Hefler

发明人： Shikui K. Chen ,  Gregory W. Hefler

IPC分类号： F02G5/00 ,  F02M45/04 ,  F02M47/02 ,  F02M47/04 ,  F02M57/02 ,  F02M59/10 ,  F02M59/36 ,  F02M59/46 ,  F02M63/00 ,  F02M63/02 ,  F02M37/04

CPC分类号： F02G5/00 ,  F02M45/04 ,  F02M47/027 ,  F02M47/043 ,  F02M57/025 ,  F02M59/105 ,  F02M59/366 ,  F02M59/466 ,  F02M63/0017 ,  F02M63/0029 ,  F02M63/0042 ,  F02M63/0045 ,  F02M63/0049 ,  F02M63/0061 ,  F02B2275/14 ,  F02M2200/21 ,  F02M2200/502 ,  Y02T10/123 ,  Y02T10/166

摘要： A fuel injection system includes a plurality of hydraulically actuated fuel injectors with direct control needle valves. Each injector has an injector body that defines an actuation fluid inlet, a fuel supply passage and a needle control chamber. A needle valve member is movably mounted in the injector body and has a closing hydraulic surface exposed to pressure in the needle control chamber. Each injector also includes a relatively slow moving actuation fluid control valve member and a relatively fast moving needle control valve member. A source of low pressure fluid is connected to the fuel supply passage, and a source of high pressure fluid is connected to the actuation fluid inlet.

摘要翻译： 燃料喷射系统包括具有直接控制针阀的多个液压致动燃料喷射器。 每个喷射器具有限定致动流体入口，燃料供应通道和针控制室的喷射器主体。 针阀构件可移动地安装在喷射器主体中并且具有暴露于针控制室内的压力的关闭液压表面。 每个喷射器还包括相对缓慢移动的致动流体控制阀构件和相对快速移动的针控制阀构件。 低压流体源连接到燃料供应通道，并且高压流体源连接到致动流体入口。

公开(公告)号：US5826562A

公开(公告)日：1998-10-27

申请号：US768014

申请日：1996-12-13

申请人： Shikui K. Chen ,  Gregory W. Hefler

发明人： Shikui K. Chen ,  Gregory W. Hefler

IPC分类号： F02G5/00 ,  F02M45/04 ,  F02M47/02 ,  F02M57/02 ,  F02M59/10 ,  F02M59/36 ,  F02M59/46 ,  F02M63/00 ,  F02M7/00 ,  F15B15/22

CPC分类号： F02G5/00 ,  F02M45/04 ,  F02M47/027 ,  F02M47/043 ,  F02M57/025 ,  F02M59/105 ,  F02M59/366 ,  F02M59/466 ,  F02M63/0017 ,  F02M63/0029 ,  F02M63/0042 ,  F02M63/0045 ,  F02M63/0049 ,  F02M63/0061 ,  F02B2275/14 ,  F02M2200/21 ,  F02M2200/502 ,  Y02T10/123 ,  Y02T10/166

摘要： A hydraulically-actuated piston and barrel assembly includes a barrel defining an actuation fluid cavity and a piston bore, which includes an upper bore and a lower bore. A stepped piston is slidably received in the piston bore and moveable between a retracted position and an advanced position. The stepped top of the piston includes a first area that is separate from a second area. The first area and the upper bore define an upper cavity connected to the actuation fluid cavity through a relatively unrestricted flow area, when the piston is in its retracted position. The second area and the lower bore define a lower cavity connected to the actuation fluid cavity through a relatively restricted flow area when the piston is in its retracted position. The first area is exposed to fluid pressure in the upper cavity and the second area is exposed to fluid pressure in the lower cavity over a portion of the piston's movement from its retracted position toward its advanced position. One of the piston or the barrel, or both, further define a restricted passage that includes a restricted flow area connecting the actuation fluid cavity to the lower cavity. The disclosure also includes a description of a hydraulically-actuated fuel injector that incorporates the piston and barrel assembly described above.

摘要翻译： 液压致动的活塞和桶组件包括限定致动流体腔和活塞孔的筒，其包括上孔和下孔。 阶梯式活塞可滑动地容纳在活塞孔中并可在缩回位置和前进位置之间移动。 活塞的台阶顶部包括与第二区域分开的第一区域。 当活塞处于其缩回位置时，第一区域和上部孔通过相对不受限制的流动区域限定连接到致动流体腔的上腔体。 当活塞处于其缩回位置时，第二区域和下部孔口通过相对受限的流动区域限定连接到致动流体腔体的下腔体。 第一区域暴露于上腔体中的流体压力，并且第二区域在活塞的运动的一部分从其缩回位置向其前进位置暴露于下腔中的流体压力。 活塞或筒体中的一个或两者进一步限定限制通道，该通道包括将致动流体腔连接到下部空腔的限制流动区域。 本公开还包括结合上述活塞和筒组件的液压致动燃料喷射器的描述。

公开(公告)号：US5738075A

公开(公告)日：1998-04-14

申请号：US864606

申请日：1997-05-28

申请人： Shikui K. Chen ,  Gregory W. Hefler

发明人： Shikui K. Chen ,  Gregory W. Hefler

IPC分类号： F02G5/00 ,  F02M45/04 ,  F02M47/02 ,  F02M47/04 ,  F02M57/02 ,  F02M59/10 ,  F02M59/36 ,  F02M59/46 ,  F02M63/00 ,  F02M63/02 ,  F02M7/00 ,  F02M37/04

CPC分类号： F02G5/00 ,  F02M45/04 ,  F02M47/027 ,  F02M47/043 ,  F02M57/025 ,  F02M59/105 ,  F02M59/366 ,  F02M59/466 ,  F02M63/0017 ,  F02M63/0029 ,  F02M63/0042 ,  F02M63/0045 ,  F02M63/0049 ,  F02M63/0061 ,  F02B2275/14 ,  F02M2200/21 ,  F02M2200/502 ,  Y02T10/123 ,  Y02T10/166

摘要： A hydraulically actuated fuel injector includes an injector body having an actuation fluid inlet and a needle control chamber. A hydraulic means within the injector pressurizes fuel in the injector body. The hydraulic means includes an actuation fluid control valve having a solenoid and is movable to open and close the actuation fluid inlet. A needle valve member includes a closing hydraulic surface exposed to pressure in the needle control chamber. A needle control valve, which utilizes the same solenoid, is mounted in the injector body and movable to open and close the needle control chamber to a source of high pressure fluid. The slower response time of the actuation fluid control valve allows for direct control of the fast responding needle valve by a single fast acting solenoid.

摘要翻译： 液压致动燃料喷射器包括具有致动流体入口和针控制室的喷射器主体。 注射器内的液压装置对喷射器主体中的燃料加压。 液压装置包括具有螺线管的致动流体控制阀，并可移动以打开和关闭致动流体入口。 针阀构件包括暴露于针控制室内的压力的关闭液压表面。 使用相同螺线管的针控制阀安装在喷射器主体中并且可移动以将针控制室打开和关闭到高压流体源。 致动流体控制阀的较慢的响应时间允许通过单个快速作用螺线管直接控制快速响应的针阀。

公开(公告)号：US6082332A

公开(公告)日：2000-07-04

申请号：US186852

申请日：1998-11-05

申请人： Gregory W. Hefler ,  Shikui K. Chen

发明人： Gregory W. Hefler ,  Shikui K. Chen

IPC分类号： F02G5/00 ,  F02M45/04 ,  F02M45/08 ,  F02M47/02 ,  F02M57/02 ,  F02M59/10 ,  F02M59/36 ,  F02M59/46 ,  F02M63/00 ,  F02M63/02 ,  F02M37/04

CPC分类号： F02M59/466 ,  F02G5/00 ,  F02M45/04 ,  F02M45/08 ,  F02M47/027 ,  F02M57/025 ,  F02M59/105 ,  F02M63/0017 ,  F02M63/0026 ,  F02M63/0029 ,  F02M63/0036 ,  F02M63/004 ,  F02M63/0042 ,  F02M63/0045 ,  F02M63/0049 ,  F02B2275/14 ,  F02M2200/502 ,  Y02T10/123 ,  Y02T10/166

摘要： A hydraulically actuated fuel injector is disclosed having an injector body defining an actuation fluid inlet, an actuation fluid cavity, a nozzle outlet, and a needle control chamber. An actuator is attached to the injector body and a first valve member is disposed in the injector body and is moveable in response to the actuator between a first position in which the actuation fluid inlet is open to the actuation fluid cavity and a second position in which the actuation fluid inlet is closed to the actuation fluid cavity. A needle valve member is disposed in the injector body and is moveable between an open position in which the nozzle outlet is open and a closed position in which the nozzle outlet is blocked. The needle valve member has a closing hydraulic surface exposed to pressure in the needle control chamber. A second valve member is disposed in the injector body and is moveable in response to the actuator, while the actuation inlet is open to the actuation fluid cavity, between an off position in which the needle control chamber is open to a source of high pressure fluid and an on position in which the needle control chamber is open to a low pressure passage. A fuel injection system including a plurality of such hydraulically actuated fuel injectors is also disclosed.

摘要翻译： 公开了一种液压致动的燃料喷射器，其具有限定致动流体入口，致动流体腔，喷嘴出口和针控制室的喷射器主体。 致动器附接到注射器主体，并且第一阀构件设置在喷射器主体中并且可响应于致动器在致动流体入口与致动流体腔相通的第一位置和第二位置之间移动，在第二位置， 致动流体入口关闭到致动流体腔。 针阀构件设置在喷射器主体中，并且能够在喷嘴出口打开的打开位置和喷嘴出口被阻挡的关闭位置之间移动。 针阀构件具有暴露于针控制室内的压力的关闭液压表面。 第二阀构件设置在喷射器主体中，并且响应于致动器可移动，而致动入口在致动流体空腔处打开至关闭位置之间，在该关闭位置中，针控制室与高压流体源 以及针控制室向低压通道打开的打开位置。 还公开了一种包括多个这种液压致动燃料喷射器的燃料喷射系统。

公开(公告)号：US5682858A

公开(公告)日：1997-11-04

申请号：US734940

申请日：1996-10-22

申请人： Shikui K. Chen ,  Gregory W. Hefler

发明人： Shikui K. Chen ,  Gregory W. Hefler

IPC分类号： F02M45/04 ,  F02M45/06 ,  F02M57/02 ,  F02M59/46 ,  F02M41/00

CPC分类号： F02M45/04 ,  F02M45/06 ,  F02M57/025 ,  F02M59/46

摘要： A hydraulically-actuated fuel injector includes an injector body having a nozzle chamber, a nozzle outlet, an actuation fluid inlet, an actuation fluid drain, an actuation fluid cavity and a pressure relief passage extending between the actuation fluid cavity and the actuation fluid drain. A hydraulic means, including an actuation fluid control valve mounted within the injector body, is used for pressurizing fuel in the nozzle chamber. A needle valve member is mounted to reciprocate in the nozzle chamber between an open position in which the nozzle outlet is open and a closed position in which the nozzle outlet is closed. A relief valve is mounted within the injector body and has a first position in which the pressure relief passage is closed and a second position in which the pressure relief passage is open.

摘要翻译： 液压致动燃料喷射器包括具有喷嘴室，喷嘴出口，致动流体入口，致动流体排放器，致动流体腔和在致动流体腔和致动流体排放之间延伸的减压通道的喷射器主体。 包括安装在喷射器主体内的致动流体控制阀的液压装置用于对喷嘴室中的燃料加压。 针阀构件安装成在喷嘴室中在喷嘴出口打开的打开位置和喷嘴出口关闭的关闭位置之间往复运动。 安全阀安装在喷射器主体内，并且具有第一位置，压力释放通道关闭在第一位置和压力​​释放通道打开的第二位置。

公开(公告)号：US5878720A

公开(公告)日：1999-03-09

申请号：US806975

申请日：1997-02-26

申请人： Michael D. Anderson ,  Shikui K. Chen ,  Mark F. Sommars

发明人： Michael D. Anderson ,  Shikui K. Chen ,  Mark F. Sommars

IPC分类号： F02M47/02 ,  F02M57/02 ,  F02M59/46 ,  F02M37/04

CPC分类号： F02M59/466 ,  F02M47/025 ,  F02M57/025

摘要： A hydraulically actuated fuel injector includes an injector body having a nozzle chamber that opens to a nozzle outlet. A control valve is mounted in the injector body and is attached to a solenoid that is moveable between a rest position and a fully energized position. A piston/plunger/barrel assembly is utilized to hydraulically pressurize fuel in the nozzle chamber to a fuel pressure that is substantially proportional to an amount of current being supplied to the solenoid. A needle valve member is positioned in the nozzle chamber and moveable between an open position in which the nozzle outlet is opened and a closed position in which the nozzle outlet is blocked. Finally, a spring is utilized to bias the solenoid toward its rest position.

摘要翻译： 液压致动的燃料喷射器包括具有向喷嘴出口开口的喷嘴室的喷射器主体。 控制阀安装在喷射器主体中并且附接到可在静止位置和完全通电位置之间移动的螺线管。 活塞/柱塞/筒组件用于将喷嘴室中的燃料液压加压到基本上与供应给螺线管的电流量成比例的燃料压力。 针阀构件定位在喷嘴室中，并且可在打开喷嘴出口的打开位置和喷嘴出口被阻塞的关闭位置之间移动。 最后，使用弹簧将螺线管偏压到其静止位置。