公开(公告)号：US06328222B1

公开(公告)日：2001-12-11

申请号：US09557975

申请日：2000-04-25

申请人： Vernon R. Warner ,  Harry R. Brooks ,  Jeff B. Pace ,  James Cohen

发明人： Vernon R. Warner ,  Harry R. Brooks ,  Jeff B. Pace ,  James Cohen

IPC分类号： F02D106

CPC分类号： F02M51/0671 ,  F02M61/20 ,  F02M67/12 ,  F02M69/08 ,  Y10T137/86928 ,  Y10T137/87668 ,  Y10T137/87692 ,  Y10T137/87772

摘要： A fuel injector for use in a internal combustion engine is disclosed. The fuel injector includes a body having a discharge end and a longitudinal axis extending therethrough, and an electromagnetic coil located within the body. The fuel injector further includes a fuel metering valve operable between an open position and a closed position and an air metering valve operable between an open position and a closed position. The fuel injector also includes a valve seat located within the body proximate to the discharge end and includes an orifice extending therethrough along the longitudinal axis. A needle is reciprocally mounted along the longitudinal axis between an open position and a closed position. The needle has an upstream end, a downstream end, and a needle channel extending therethrough along the longitudinal axis. The needle engages the valve seat in the closed position. A guide is disposed along the longitudinal axis such that the upstream end of the needle is reciprocable within the guide. A seal having a seal opening therethrough is located within the guide. A bellows fluidly connects the seal opening and the needle channel. The bellows and the guide form a generally annular chamber therebetween. The bellows is movable between a compressed and an extended position. The annular chamber is adapted to receive fuel. The seal prevents the fuel in the annular chamber from entering the needle channel. A method of operating the fuel injector is also disclosed.

摘要翻译： 公开了一种用于内燃机的燃油喷射器。 燃料喷射器包括具有排出端和延伸穿过其的纵向轴线的主体和位于主体内的电磁线圈。 燃料喷射器还包括可在打开位置和关闭位置之间操作的燃料计量阀以及可在打开位置和关闭位置之间操作的空气计量阀。 燃料喷射器还包括位于主体内靠近排出端的阀座，并且包括沿着纵向轴线延伸穿过的孔口。 针在打开位置和关闭位置之间沿着纵向轴线往复地安装。 针具有上游端，下游端和沿着纵向轴线延伸穿过的针通道。 针在关闭位置接合阀座。 引导件沿着纵向轴线设置，使得针的上游端在引导件内往复运动。 具有穿过其中的密封开口的密封件位于引导件内。 波纹管将密封开口和针通道流体连接。 波纹管和引导件在其间形成大致环形的室。 波纹管可在压缩和伸出位置之间移动。 环形室适于接收燃料。 密封件防止环形室中的燃料进入针通道。 还公开了一种操作燃料喷射器的方法。

公开(公告)号：US5765750A

公开(公告)日：1998-06-16

申请号：US686938

申请日：1996-07-26

申请人： Jeffrey B. Pace ,  Vernon R. Warner

发明人： Jeffrey B. Pace ,  Vernon R. Warner

IPC分类号： F02M51/08 ,  F02M61/18 ,  F02M51/06 ,  B05B1/14

CPC分类号： F02M61/1853 ,  F02M2051/08

摘要： A flow straightener and a controlled disturbance element are interposed between the injector needle seat and the discharge orifice disk of a fuel injector. The flow straightener straightens flow eliminating turbulence prior to fuel discharge. The controlled disturbance disturbs the fuel flow providing controlled atomization. A spacer is provided between the flow straightener and the controlled disturbance element as well as between the controlled disturbance element and the discharge orifice disk delimiting flow recovery regions. By varying the diameter and/or height of the spacers, in conjunction with the controlled disturbance element, an adjustable level of flow disturbance can be obtained, leading to variable degrees of atomization. In one arrangement, the flow straightener and the controlled disturbance element are combined into a single flow element performing the functions of both the flow straightener and the controlled disturbance element.

摘要翻译： 在喷射器针座和燃料喷射器的排放孔盘之间插入流动矫直机和受控扰动元件。 流量矫直机在燃油排放之前矫直流动消除湍流。 控制的干扰扰乱了燃料流动，从而提供受控的雾化。 在流动矫直机和受控制的扰动元件之间以及控制的扰动元件和排出孔盘之间设有间隔件限定流动恢复区域。 通过改变间隔件的直径和/或高度，与可控制的扰动元件相结合，可以获得可调节的流量扰动水平，从而导致可变程度的雾化。 在一种布置中，流动矫直机和受控扰动元件组合成执行流动矫直机和受控扰动元件的功能的单个流动元件。

公开(公告)号：US5747684A

公开(公告)日：1998-05-05

申请号：US686935

申请日：1996-07-26

申请人： Jeffrey B. Pace ,  Vernon R. Warner ,  Danny O. Wright

发明人： Jeffrey B. Pace ,  Vernon R. Warner ,  Danny O. Wright

IPC分类号： F02M65/00 ,  G01M15/00 ,  G01L3/26

CPC分类号： F02M65/00 ,  F02D2041/2055

摘要： Opening and closing times of a fuel injector are accurately determined in accordance with the energy content of an accelerometer trace. The energy content of an accelerometer trace is determined in accordance with a predetermined relation. A line is defined between known points prior to and after the opening or closing time. The normal distance between the line connecting known points and the accelerometer trace energy content is maximum at the inflection point, which corresponds to the opening or closing time. With this data, an ECU can be properly programmed to more accurately control an injector stroke, thereby improving engine performance.

摘要翻译： 燃料喷射器的打开和关闭时间根据加速度计迹线的能量含量被准确地确定。 根据预定关系来确定加速度计迹线的能量含量。 在打开或关闭时间之前和之后的已知点之间定义一条线。 连接已知点的线与加速度计跟踪能量含量之间的正常距离在拐点处最大，这对应于打开或关闭时间。 利用这些数据，可以对ECU进行适当的编程，以更精确地控制喷油器行程，从而提高发动机性能。

公开(公告)号：US5437413A

公开(公告)日：1995-08-01

申请号：US217589

申请日：1994-03-24

申请人： Jingming J. Shen ,  Vernon R. Warner

发明人： Jingming J. Shen ,  Vernon R. Warner

IPC分类号： F02M51/08 ,  F02M51/06 ,  F02M61/18 ,  F02M69/04 ,  F02M61/00

CPC分类号： F02M61/1853 ,  F02M69/047 ,  F02M51/06

摘要： The atomizer is a cap-shaped shroud that contains a stack of flat stamped metal inserts. When assembled onto the nozzle of a fuel injector, the atomizer causes the inserts to be axially sandwiched between the shroud's end wall and the exterior end of the nozzle. In the zone of sandwiching, the inserts have circumferential discontinuities that in cooperation with the nozzle end and the shroud's end wall define air assist openings for the assist air to flow radially inwardly toward the injected fuel that has just been injected from the nozzle. An air assist opening in one insert is thereby both circumferentially and axially offset from an air assist opening in another insert.

摘要翻译： 雾化器是一个盖形的护罩，其中包含一叠平的冲压金属插件。 当组装到燃料喷射器的喷嘴上时，雾化器使插入件轴向地夹在护罩的端壁和喷嘴的外端之间。 在夹层区域中，插入件具有圆周不连续性，其与喷嘴端部协作并且护罩的端壁限定空气辅助开口，用于辅助空气径向向内流向刚从喷嘴喷射的喷射燃料。 因此，一个插入件中的空气辅助开口沿着另一个插入件的空气辅助开口的周向和轴向偏移。

公开(公告)号：US5865371A

公开(公告)日：1999-02-02

申请号：US686936

申请日：1996-07-26

申请人： Jeffrey B. Pace ,  Vernon R. Warner ,  James A. Nitkiewicz

发明人： Jeffrey B. Pace ,  Vernon R. Warner ,  James A. Nitkiewicz

IPC分类号： F02M51/08 ,  F02D41/20 ,  F02M63/00 ,  F16K31/08

CPC分类号： F02D41/20 ,  F02D19/024 ,  F02D2041/2027 ,  F02D2041/2031 ,  F02D2041/2034 ,  F02D2041/2037 ,  F02D2200/063

摘要： An injector needle/armature assembly stroke is controlled so as to minimize opening and closing impact forces. The controlled motion eliminates or significantly reduces the problems associated with valve bounce, providing less acoustic emission, reduced wear, improved spray characteristics and better flow regulation. The current applied to the electromagnetic coil of the injector in accordance with a modified injector timing pulse waveform serves to reduce impact velocities at each end of the armature stroke. The waveform can be optimized for a class of injectors with a pulse width modulated waveform, repeatedly re-energizing and de-energizing the electromagnetic coil in accordance with an optimized on/off pulse train.

摘要翻译： 控制喷射器针/电枢组件行程以最小化打开和关闭冲击力。 控制运动消除或显着减少与阀弹跳相关的问题，提供更少的声发射，减少的磨损，改进的喷雾特性和更好的流量调节。 根据修改的喷射器定时脉冲波形施加到喷射器的电磁线圈的电流用于减小在电枢行程的每个端部处的冲击速度。 该波形可针对具有脉冲宽度调制波形的一类喷射器进行优化，根据优化的开/关脉冲序列反复重新激励和断开电磁线圈。

公开(公告)号：US5666927A

公开(公告)日：1997-09-16

申请号：US686937

申请日：1996-07-26

申请人： Jeffrey B. Pace ,  Vernon R. Warner

发明人： Jeffrey B. Pace ,  Vernon R. Warner

IPC分类号： F02M51/06 ,  F02M61/00 ,  F02M63/00 ,  F02M69/00 ,  F02M69/04 ,  F02M71/00 ,  F02M71/04 ,  F02M23/00

CPC分类号： F02M69/00 ,  F02M51/0671 ,  F02M61/00 ,  F02M63/00 ,  F02M69/04 ,  F02M71/00 ,  F02M71/04

摘要： The fuel and air supply system of the present invention provides fuel from a fuel pump at a first pressure upstream of a pressure reducer, fuel being provided directly to the fuel injector at a reduced pressure on the downstream side of the pressure reducer. A bypass line in communication with the fuel line upstream of the pressure reducer provides fuel to an air reservoir at the first pressure. The air reservoir lies in communication with a porous member(s) in the fuel injector in an air inlet to a fuel volume within the injector upstream of the pressure reducer. Upon flow of fuel into the air reservoir and closure of normally open fuel and air valves in the reservoir, air at the first pressure is supplied the porous member(s), creating a pressure differential across the member(s), causing air to flow through the porous member(s) to form air bubbles in the fuel volume for two-phase flow through the fuel injector orifice. The air flows for a predetermined time until the reservoir fills with fuel which precludes further air flow into the injector. Upon shutdown of the engine, the valves in the air reservoir open, draining the fuel from the air reservoir and enabling air at atmospheric pressure to enter the reservoir, returning the system for reuse upon engine startup.

摘要翻译： 本发明的燃料和空气供应系统在减压器上游的第一压力下从燃料泵提供燃料，在减压器的下游侧以减压的方式直接向燃料喷射器提供燃料。 与减压器上游的燃料管路连通的旁路管线在第一压力下向燃气储存器提供燃料。 空气储存器与燃料喷射器中的多孔构件连通，该空气入口到减压器上游的喷射器内的燃料体积。 当燃料流入空气储存器并关闭储存器中常开的燃料和空气阀时，在第一压力下的空气被供给多孔构件，从而在该构件上产生压力差，导致空气流动 通过多孔构件在燃料体积中形成气泡，用于通过燃料喷射器孔的两相流动。 空气流动预定时间，直到储存器充满燃料，排除进一步气流进入喷射器的燃料。 在发动机关闭时，储气罐中的阀打开，从空气储存器排出燃料并使大气压力的空气进入储存器，在发动机起动时将系统返回以重新使用。

公开(公告)号：US06209806B1

公开(公告)日：2001-04-03

申请号：US09228171

申请日：1999-01-11

申请人： Jeff B. Pace ,  Vernon R. Warner

发明人： Jeff B. Pace ,  Vernon R. Warner

IPC分类号： F02M5100

CPC分类号： F02M69/047 ,  F02M51/0671 ,  F02M61/162 ,  F02M67/02

摘要： A fuel injector having a pulsed air assist atomizer to provide improved atomization and fuel spray targeting. The fuel injector provides a pulsed air supply, rather than a continuous air supply at the discharge of the fuel injector. The fuel injector includes an air inlet, a fuel inlet, mixing chamber and controller for controlling the simultaneous introduction of air and fuel into the mixing chamber. The controller controls an air jet to impact fuel flowing into the mixing chamber to atomize the fuel before discharge of the air-fuel mixture from the fuel injector.

摘要翻译： 具有脉冲空气辅助雾化器以提供改进的雾化和燃料喷雾靶向的燃料喷射器。 燃料喷射器提供脉冲空气供应，而不是在燃料喷射器排放处的连续空气供应。 燃料喷射器包括空气入口，燃料入口，混合室和控制器，用于控制同时将空气和燃料引入混合室。 控制器控制空气射流以冲击流入混合室的燃料，以便在从燃料喷射器排出空气 - 燃料混合物之前使燃料雾化。

公开(公告)号：US6102299A

公开(公告)日：2000-08-15

申请号：US216425

申请日：1998-12-18

申请人： Jeff Pace ,  Vernon R. Warner

发明人： Jeff Pace ,  Vernon R. Warner

IPC分类号： F02M61/16 ,  F02M61/18 ,  F02M61/10

CPC分类号： F02M61/162 ,  F02M61/16 ,  F02M61/1853

摘要： An improved atomization fuel injector for an internal combustion engine includes an armature assembly including an injector needle reciprocable between a closed position and an open position; a needle seat for receiving the injector needle in the closed position, the needle seat including a central opening therethrough; an exit orifice disk disposed downstream of the needle seat; and an impinging jet atomizer disposed upstream of the exit orifice disk. A method of improving atomization of fuel in fuel injectors includes providing a fuel injector; adding fuel to the fuel injector; passing the fuel through a central opening in a seat of the fuel injector; separating the fuel into at least two channels; and directing at least two channels of fuel towards one another such that the channels of fuel collide with each other.

摘要翻译： 用于内燃机的改进的雾化燃料喷射器包括电枢组件，其包括可在闭合位置和打开位置之间往复运动的喷射器针; 用于将注射器针接收在关闭位置的针座，所述针座包括穿过其的中心开口; 设置在所述针座下游的出口孔盘; 以及设置在出口孔盘的上游的冲击式喷雾器。 一种改善燃料喷射器中燃料雾化的方法包括提供燃料喷射器; 向燃料喷射器添加燃料; 使燃料通过燃料喷射器的座中的中心开口; 将燃料分成至少两个通道; 并且将至少两个燃料通道彼此引导使得燃料通道彼此碰撞。

公开(公告)号：US6145496A

公开(公告)日：2000-11-14

申请号：US56290

申请日：1998-04-07

申请人： Jeffrey B. Pace ,  Vernon R. Warner

发明人： Jeffrey B. Pace ,  Vernon R. Warner

IPC分类号： F02M51/06 ,  F02M69/04 ,  F02M69/08

CPC分类号： F02M61/1853 ,  F02M51/0671 ,  F02M69/047

摘要： A fuel injector has a shroud surrounding its valve orifice. The shroud carries a porous element spaced from the orifice to define a chamber. Air passages are provided through the shroud for injecting air under pressure into the chamber. The fuel sprayed onto the porous element from the orifice enters the pores of the element and increases the wetted surface area such that the air under pressure passing through the porous element shreds the fuel films and finely atomizes the fuel for egress from the porous element into the internal combustion engine.

摘要翻译： 燃料喷射器具有围绕其阀孔的护罩。 护罩携带与孔口间隔开的多孔元件以限定腔室。 通过护罩提供空气通道，用于在压力下将空气注入腔室。 从孔口喷射到多孔元件上的燃料进入元件的孔隙并增加润湿的表面积，使得通过多孔元件的压力下的空气粉碎燃料膜，并将燃料从多孔元件微粒化到出口 内燃机。

公开(公告)号：US5730367A

公开(公告)日：1998-03-24

申请号：US686939

申请日：1996-07-26

申请人： Jeffrey B. Pace ,  Vernon R. Warner

发明人： Jeffrey B. Pace ,  Vernon R. Warner

IPC分类号： F02M51/06 ,  F02M61/00 ,  F02M63/00 ,  F02M69/00 ,  F02M69/04 ,  F02M71/00 ,  F02M51/00

CPC分类号： F02M71/00 ,  F02M51/0671 ,  F02M61/00 ,  F02M63/00 ,  F02M69/00 ,  F02M69/04

摘要： A fuel injector for an engine includes a fuel volume having an air inlet port having a porous membrane. The membrane is permeable to air and impermeable to fuel whereby air inlet to the fuel volume forms a two-phase air bubble/fuel dispersion within the fuel volume. Upon actuation of the needle valve of the injector, this two-phase air bubble/fuel dispersion flows through the orifice into the engine whereby improved atomization, burn and fuel economy with resultant reduction in emissions are provided.

摘要翻译： 用于发动机的燃料喷射器包括具有具有多孔膜的空气入口的燃料体积。 该膜对于空气是可渗透的，并且对燃料不可渗透，由此燃料体积的空气入口在燃料体积内形成两相气泡/燃料分散体。 在致动注射器的针阀时，这种两相气泡/燃料分散体流过孔口进入发动机，从而提供了改善的雾化，燃烧和燃料经济性，从而减少了排放。