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公开(公告)号：US06964270B2
公开(公告)日：2005-11-15
申请号：US10637361
申请日：2003-08-08
申请人： John M. Janssen , Bruce A. Watson , Charles R. Schenk , Josh S. Shao , Lester L. Peters , David L. Buchanan , Wayne A. Eckerle , Julius P. Perr
发明人： John M. Janssen , Bruce A. Watson , Charles R. Schenk , Josh S. Shao , Lester L. Peters , David L. Buchanan , Wayne A. Eckerle , Julius P. Perr
IPC分类号： F02M25/07
摘要： A preferred embodiment EGR valve permits exhaust gas to be induced into the intake line downstream of the compressor, while minimizing the need to reduce the size of the turbocharger. The preferred embodiment EGR valve exploits variations around the mean pressure in the EGR passage created by the engine cycle by selectively opening when the pressure in the EGR valve exceeds the pressure in the intake line. Thus, exhaust gas is recirculated even when the engine is running near torque peak. The preferred embodiment EGR valve also exploits the higher mean pressure in the exhaust line relative to the intake line at higher engine speeds by remaining open, in order to minimize the energy consumed in opening and closing the EGR valve.
摘要翻译： 优选的实施方案EGR阀允许排气被吸入到压缩机下游的进气管路中，同时最小化减小涡轮增压器尺寸的需要。 EGR阀利用在发动机循环所产生的EGR通路中的平均压力周围的变化，当EGR阀中的压力超过进气管线中的压力时，选择性地打开EGR阀。 因此，即使当发动机在扭矩峰值附近运行时，废气也被再循环。 在优选实施例中，EGR阀还通过保持打开来利用在较高发动机转速下相对于进气管线的排气管线中较高的平均压力，以便最小化打开和关闭EGR阀时消耗的能量。
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公开(公告)号：US5713335A
公开(公告)日：1998-02-03
申请号：US659619
申请日：1996-06-06
申请人： Julius P. Perr , Lester L. Peters , Amarjit S. Ghuman , Benjamin M. Yen , Edward D. Smith , David L. Buchanan , Yul J. Tarr , Laszlo D. Tikk , Andrew G. Stiles
发明人： Julius P. Perr , Lester L. Peters , Amarjit S. Ghuman , Benjamin M. Yen , Edward D. Smith , David L. Buchanan , Yul J. Tarr , Laszlo D. Tikk , Andrew G. Stiles
CPC分类号： F02D1/16 , F01L13/0063 , F02D1/183 , F02M57/023 , F02M59/102
摘要： In accordance with preferred embodiments of the invention a timing adjustment device includes a cam follower that is engaged between an overhead cam and an injector rocker arm, and is mounted on a rotatable eccentric shaft. The geometry of the eccentric shaft and cam follower is designed so that, as timing is varied by rotation of the eccentric shaft, no change is produced in the vertical height of the rocker arm when the cam shaft is on the outer base circle and the injector is bottomed, in order to assure that the "mechanical crush" of the PT type injector is constant despite changes in timing. In a first application of the timing arrangement, it is used together with a simple injector, which does not utilize a multi-plunger arrangement to form a hydraulic link, to achieve lower parasitic losses. To obtain independent control over injection pressure and timing, a fuel injector in which a hydraulic link is formed between plungers of a multi-plunger arrangement is used with the timing arrangement in order to allow the injection pressure to be maintained constant over a wide range of engine speeds without interfering with engine timing.
摘要翻译： 根据本发明的优选实施例，定时调节装置包括凸轮从动件，其接合在顶置凸轮和喷射器摇臂之间，并安装在可旋转的偏心轴上。 偏心轴和凸轮从动件的几何形状被设计成使得当定时通过偏心轴的旋转而变化时，当凸轮轴在外基圆上时，在摇臂的垂直高度上不产生变化，并且喷射器 是为了确保PT型喷射器的“机械挤压”在时间上有变化时是恒定的。 在定时装置的第一应用中，它与简单的喷射器一起使用，其不利用多柱塞装置来形成液压连杆，以实现更低的寄生损耗。 为了获得对喷射压力和时间的独立控制，在定时装置中使用其中在多柱塞装置的柱塞之间形成液压连杆的燃料喷射器，以便允许喷射压力在宽范围内保持恒定 发动机转速，而不会干扰发动机定时。
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公开(公告)号：US07021558B2
公开(公告)日：2006-04-04
申请号：US10423010
申请日：2003-04-25
IPC分类号： B05B9/00
CPC分类号： F02M53/043 , F02M55/002 , F02M55/004 , F02M59/466 , F02M59/468 , F02M61/042 , F02M63/0225
摘要： A fuel injector is provided with a lower nozzle body which is cooled with a small amount of metered fuel. In one embodiment, a blind passage is formed to extend from the upper portion to the lower end of the injector nozzle valve element. A transverse passage is formed in the nozzle valve element connecting the blind passage and the nozzle bore. Rail pressure causes a metered amount of fuel to flow through the nozzle bore, the transverse passage and upwardly along the blind passage to the drain passage. Inward cooling occurs by providing more surface area over which the fuel flows. In another embodiment, a sleeve is formed to fit over an existing nozzle to form a passage surrounding the injector tip. An orifice is located in the nozzle housing to connect the nozzle cavity with the annular passage thereby providing a small amount of fuel to drain.
摘要翻译： 燃料喷射器设置有用少量计量燃料冷却的下喷嘴体。 在一个实施例中，盲通道形成为从喷射器喷嘴阀元件的上部延伸到下端。 在连接盲通道和喷嘴孔的喷嘴阀元件中形成横向通道。 轨道压力导致计量的燃料流过喷嘴孔，横向通道并沿着盲通道向上流到排水通道。 通过提供更多的燃料流过的表面积来进行向内冷却。 在另一个实施例中，套筒形成为装配在现有喷嘴上方以形成围绕喷射器尖端的通道。 孔口位于喷嘴壳体中，以将喷嘴腔与环形通道连接，从而提供少量燃料排出。
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公开(公告)号：US07028918B2
公开(公告)日：2006-04-18
申请号：US09777953
申请日：2001-02-07
IPC分类号： B05B15/00
CPC分类号： F02M61/14 , F02M53/043 , F02M2200/858
摘要： A fuel injector having a nozzle with improved cooling including a retainer and a nozzle housing received therein. The nozzle housing includes a nozzle shank, an outer peripheral surface and at least one injection hole at a tip of the nozzle shank. The nozzle shank is positioned in a nozzle support portion of the retainer. In one embodiment, the outer peripheral surface of the nozzle shank is tapered, and the inner peripheral surface of the nozzle support portion is correspondingly tapered and sized to engage the outer peripheral surface of the nozzle shank along a tapered interface. In another embodiment, the inner peripheral surface of the nozzle support portion has a diameter smaller than a diameter of the outer peripheral surface of the nozzle shank so that an interference fit exists at a seal interface. In yet another embodiment, a nozzle seal seals an interface between the inner peripheral surface of the retainer and the outer peripheral surface of the nozzle shank to thereby prevent entry of hot gases into the interface. In another embodiment, the nozzle support portion is provided on a nozzle sleeve.
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公开(公告)号：US09903329B2
公开(公告)日：2018-02-27
申请号：US13448098
申请日：2012-04-16
申请人： Lester L. Peters , Jeffrey C. Huang , David L. Buchanan , Corydon Edward Morris , Gary Gant , Denis Gill , Heribert Kammerstetter , Ernst Winklhofer
发明人： Lester L. Peters , Jeffrey C. Huang , David L. Buchanan , Corydon Edward Morris , Gary Gant , Denis Gill , Heribert Kammerstetter , Ernst Winklhofer
CPC分类号： F02M61/10 , F02M61/1866
摘要： A fuel injector is provided that includes various precise configuration parameters, including dimensions, shape and/or relative positioning of fuel injector features, resulting in improved efficiency of fuel flow through the fuel injector.
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公开(公告)号：US09062642B2
公开(公告)日：2015-06-23
申请号：US13052950
申请日：2011-03-21
CPC分类号： F02M61/1806 , F02M45/08 , F02M45/12 , F02M51/0603 , F02M61/045 , F02M61/08 , F02M61/161 , F02M2200/703 , Y02T10/123
摘要： A fuel injector is provided that creates variable spray characteristics to effectively reduce emissions, such as NOx emissions and particulate matter. The injector includes a nozzle valve element of the outwardly opening type including a fuel delivery passage and spray holes. The nozzle valve element is operable to move to a low lift position to cause fuel flowing from the spray holes to impinge on the injector body and to deflect toward the combustion chamber, and to move to a high lift position to cause fuel flowing from the spray holes to avoid impingement on injector body and flow in an obstructed manner directly into the combustion chamber. An annular chamber may be formed in the nozzle valve element adjacent the spray holes to receive fuel.
摘要翻译： 提供了一种燃料喷射器，其产生可变喷射特性以有效地减少诸如NOx排放物和颗粒物质的排放。 喷射器包括一个包括燃料输送通道和喷射孔的向外开口类型的喷嘴阀元件。 喷嘴阀元件可操作以移动到较低的提升位置，以使来自喷孔的燃料流入喷射器主体并且朝向燃烧室偏转，并且移动到高升程位置以使燃料从喷雾流出 孔，以避免冲击喷射器主体并以阻碍的方式直接流入燃烧室。 可以在喷嘴阀元件中邻近喷射孔形成环形室，以接收燃料。
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公开(公告)号：US5277162A
公开(公告)日：1994-01-11
申请号：US7973
申请日：1993-01-22
CPC分类号： F02D7/002 , F02D1/12 , F02D7/007 , F02M57/024
摘要： A fuel system for fuel injectors of an internal combustion engine is provided with a hydromechanical timing valve having a valve body assembly with a barrel and plunger arrangement. The plunger is displaceable within the barrel under the counterbalancing forces of rail fuel pressure (load) and one or more timing valve springs. The relative position of the barrel and plunger determines the effective size of the port through which timing fluid can flow. In accordance a first embodiment, the plunger has a tapered head which covers and uncovers ports in the barrel to a greater or lesser extent, thereby creating a variable flow-through cross section. Alternatively, in accordance with other embodiments, the barrel has ports with slot-like orifices of progressively changing widths which coact with a metering groove on the spool to define a variable flow cross section through which the timing fluid must pass. Optionally, for highway motor vehicle applications, to increase fuel economy, a delayed timing advance feature can be incorporated into the timing valve. More specifically, by a controlled leakage effect, the valve plunger can be caused to shift in a direction causing timing to be advanced (timing fluid supply increased) only after a predetermined period of time has elapsed. This delayed timing advance can be produced, in accordance with the invention, via a second, internal plunger, or via a second, diaphragm-operated external plunger.
摘要翻译： 一种用于内燃机的燃料喷射器的燃料系统设置有具有带有筒体和柱塞装置的阀体组件的液压机械正时阀。 柱塞在轨道燃料压力（负载）和一个或多个定时阀弹簧的平衡力下在筒内可移动。 筒和柱塞的相对位置决定了定时流体可以流过的端口的有效尺寸。 根据第一实施例，柱塞具有锥形头部，该锥形头部可以或多或少地覆盖和暴露筒体中的端口，从而形成可变的流过横截面。 或者，根据其它实施例，筒体具有端口，其具有逐渐变化的宽度的槽状孔口，其与阀芯上的计量槽共同定义可变流量横截面，正时流体必须通过该横截面通过。 可选地，对于公路机动车辆应用，为了提高燃料经济性，可以将延时定时提前特征结合到定时阀中。 更具体地，通过受控的泄漏效应，只有在经过了预定时间段之后，才能使阀柱塞在导致正在提前定时的方向上移动（定时流体供应增加）。 根据本发明，可以经由第二内部柱塞或经由第二隔膜操作的外部柱塞来产生该延迟定时提前。
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公开(公告)号：US07140353B1
公开(公告)日：2006-11-28
申请号：US11167556
申请日：2005-06-28
CPC分类号： F02M47/027 , F02M61/167 , F02M63/0026 , F02M63/0031
摘要： An piezoelectric actuated injector is provided which includes a nozzle valve element, a control volume, and an injection control valve including a control valve member for controlling fuel flow from the control volume so as to control nozzle valve movement. Importantly, the injector includes a preload chamber positioned along an injection control valve member for receiving high pressure fuel. The high pressure fuel acts on the injection control valve member to apply a preload force to supply a preload force to the stack of piezoelectric elements thereby ensuring more accurate control over fuel injection timing and metering.
摘要翻译： 提供一种压电致动的喷射器，其包括喷嘴阀元件，控制体积和喷射控制阀，其包括用于控制来自控制体积的燃料流量以控制喷嘴阀运动的控制阀构件。 重要的是，喷射器包括沿着喷射控制阀构件定位的用于接收高压燃料的预压室。 高压燃料作用在喷射控制阀构件上以施加预载力，以向压电元件堆提供预载力，从而确保对燃料喷射正时和计量的更精确的控制。
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公开(公告)号：US20090024299A1
公开(公告)日：2009-01-22
申请号：US11778397
申请日：2007-07-16
IPC分类号： F02D41/00
CPC分类号： F02D41/3836 , F02D41/20 , F02D41/222 , F02D2041/2055 , F02D2041/223 , F02D2200/0602
摘要： The operation of a fuel injector for an internal combustion engine is controlled, wherein the fuel injector has an on time comprising a pull-in time during which injector current increases to a pull-in current followed by a hold time during which the injector current is limited to a hold current that is less than the pull-in current. A control circuit receives a pressure signal from a pressure sensor that corresponds to a pressure of fuel supplied to the fuel injector for injection into the engine, correlates the pressure signal with fuel pressure, and decreases the pull-in time with increasing fuel pressure.
摘要翻译： 控制用于内燃机的燃料喷射器的操作，其中燃料喷射器具有接通时间，其包括吸入时间，在该时间期间，喷射器电流增加到吸入电流，随后是保持时间，在此期间喷射器电流为 限于小于引入电流的保持电流。 控制电路接收来自压力传感器的压力信号，其对应于供给到用于喷射到发动机的燃料喷射器的燃料的压力，将压力信号与燃料压力相关联，并且随着燃料压力的增加而减小吸入时间。
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公开(公告)号：US08757047B2
公开(公告)日：2014-06-24
申请号：US12048743
申请日：2008-03-14
IPC分类号： F16J9/00
CPC分类号： F02M59/442 , F02M59/02
摘要： A fluid control device for use in a high pressure fluid system, the device including a device body with a cavity and a high pressure circuit, a plunger positioned for reciprocal movement in the cavity, and a leakage reduction cap mounted to the plunger for reducing fluid leakage flow. In one implementation, the leakage reduction cap includes a flexible portion positioned between the device body and the plunger, and defining an annular clearance gap between the leakage reduction cap and the device body. The flexible portion of the leakage reduction cap resiliently flexes radially outwardly in response to fluid pressure forces to reduce the annular clearance gap so as to minimize fluid leakage flow through the annular clearance gap.
摘要翻译： 一种用于高压流体系统的流体控制装置，该装置包括具有空腔和高压回路的装置主体，用于在空腔中往复运动的柱塞，以及安装到柱塞上以减少流体的泄漏减小帽 泄漏流量。 在一个实施方案中，泄漏减小帽包括位于装置主体和柱塞之间的柔性部分，并且在泄漏减小帽和装置主体之间限定环形间隙。 泄漏减小帽的柔性部分响应于流体压力弹性地径向向外弯曲，以减小环形间隙，从而使通过环形间隙的流体泄漏流量最小化。
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