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1.发明授权Hydraulically-actuated electronically-controlled unit injector having stroke-controlled piston and methods of operation 失效具有行程控制的活塞和操作方法的液压致动电控单元喷射器
公开(公告)号：US5181494A
公开(公告)日：1993-01-26
申请号：US776502
申请日：1991-10-11
IPC分类号： F02D41/06 , F02B75/18 , F02D41/40 , F02F7/00 , F02M57/02 , F02M59/10 , F02M63/00 , F02M63/02
CPC分类号： F02D41/062 , F02M57/025 , F02M63/00 , F02B2075/1832 , F02B2275/14 , F02D2200/0606 , F02D41/3809 , F02F7/006 , Y02T10/123
摘要： In a hydraulically-actuated electronically-controlled unit injector, the viscosity of the actuating fluid used to actuate the unit injector varies with ambient temperature and affects the magnitude of pressure drops in the actuating fluid circuit. Such variations in viscosity affect the magnitude of the fuel delivery command pulsewidth and/or actuating fluid pressure required for engine startup versus that required for normal engine operation. The present invention provides an improved hydraulically-actuated electronically-controlled unit injector and methods of operation which compensate for variations in the viscosity of the actuating fluid used to hydraulically actuate a piston. The stroke of the piston is controlled electronically and/or mechanically in order to achieve an appropriate amount of fuel injection.
摘要翻译： 在液压致动的电子控制单元喷射器中，用于致动单元喷射器的致动流体的粘度随着环境温度而变化，并且影响致动流体回路中压降的大小。 粘度的这种变化影响发动机起动所需的燃料输送指令脉冲宽度和/或致动流体压力的大小，而与正常的发动机操作相关。 本发明提供一种改进的液压致动电控单元喷射器和操作方法，其补偿用于液压致动活塞的致动流体的粘度变化。 电动和/或机械地控制活塞的冲程以便实现适当量的燃料喷射。
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2.发明申请公开(公告)号：US20140053800A1
公开(公告)日：2014-02-27
申请号：US13590518
申请日：2012-08-21
CPC分类号： F02D19/025 , F02B7/06 , F02D19/10 , F02D41/0025 , F02D41/0027 , F02D2041/224 , F02M21/0215 , F02M21/0221 , F02M21/0245 , F02M21/0287 , Y02T10/32 , Y02T10/36
摘要： A machine includes a machine body and a dual fuel compression ignition engine attached to the machine body. A dual fuel system is operably coupled to supply the engine with liquid diesel fuel and natural gas fuel directly into respective cylinders of the engine. The fuel system includes an insulated tank for storing the natural gas fuel, a pressure sensor positioned to measure fluid pressure within the tank, and a pump for drawing the natural gas fuel from the tank. An electronic controller is in communication with the pressure sensor and has a cryogenic system diagnostics algorithm executable thereon that is configured to receive a pressure signal from the pressure sensor, detect a cryogenic system fault based on the signal, and generate a notification signal based on the fault.
摘要翻译： 机器包括机身和连接到机体的双燃料压缩点火发动机。 双燃料系统可操作地联接以将液体柴油燃料和天然气燃料直接供给发动机的相应气缸。 燃料系统包括用于存储天然气燃料的绝热罐，用于测量罐内的流体压力的压力传感器，以及用于从罐中抽取天然气燃料的泵。 电子控制器与压力传感器通信并且具有可执行的低温系统诊断算法，其被配置为从压力传感器接收压力信号，基于该信号检测低温系统故障，并基于该信号生成通知信号 故障。
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公开(公告)号：US20090159053A1
公开(公告)日：2009-06-25
申请号：US12338335
申请日：2008-12-18
申请人： Alan R. Stockner , Scott F. Shafer
发明人： Alan R. Stockner , Scott F. Shafer
IPC分类号： F02M37/04
CPC分类号： F02M59/442 , F02M59/44 , F02M63/027 , F04B1/0404 , F04B1/0421 , F04B53/16
摘要： A pumping element for pressurizing a fluid within a fluid pump includes a plunger reciprocally disposed within a bore defined in a barrel. The plunger and barrel at least partially define a pressurization chamber into which fluid is pressurized. A flow path is defined between the plunger and the bore, the flow path permitting fluid to pass from the pressurization chamber during pressurization of fluid disposed therein. A collection chamber is formed between the plunger and the bore, the collection chamber being disposed adjacent to the bore and being part of a cooling circuit for the pumping element. A plurality of weep openings is defined in the barrel and is fluidly connected to the collection chamber. A reduced diameter portion of the barrel forms an annular reservoir that receives fluid from the weep openings.
摘要翻译： 用于对流体泵内的流体加压的泵送元件包括往复地设置在限定在桶中的孔内的柱塞。 柱塞和桶至少部分地限定了加压室，流体被加压到该加压室中。 在柱塞和孔之间限定流动路径，允许流体在加压设置在其中的流体的加压期间允许流体从加压室通过。 收集室形成在柱塞和孔之间，收集室邻近孔并且是泵送元件的冷却回路的一部分。 在桶中限定了多个流出开口，并且流体地连接到收集室。 桶的直径减小部分形成一个环形储存器，其接收来自漏水开口的流体。
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公开(公告)号：US07543567B2
公开(公告)日：2009-06-09
申请号：US11976797
申请日：2007-10-29
申请人： Dennis H. Gibson , Alan R. Stockner
发明人： Dennis H. Gibson , Alan R. Stockner
CPC分类号： F02M55/02 , F02M55/005 , F02M61/14 , F02M63/0225
摘要： A fuel system for an engine including a cylinder head having a first bore and a second bore intersecting the first bore is disclosed. The fuel system includes a common rail and a fuel injector coupled to the cylinder head and at least partially received within the first bore. The fuel system also includes a one-piece hollow tube, extending linearly from the common rail to the fuel injector through the second bore. The one-piece hollow tube is configured to communicate high pressure fuel from the common rail to the fuel injector.
摘要翻译： 公开了一种用于发动机的燃料系统，其包括具有与第一孔相交的第一孔和第二孔的气缸盖。 燃料系统包括共轨和联接到气缸盖并且至少部分地容纳在第一孔内的燃料喷射器。 燃料系统还包括一体式中空管，其通过第二孔从共轨直线延伸到燃料喷射器。 一体式中空管构造成将来自共轨的高压燃料与燃料喷射器相通。
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公开(公告)号：US07059301B2
公开(公告)日：2006-06-13
申请号：US10370000
申请日：2003-02-20
CPC分类号： F02M63/028 , F02M45/00 , F02M45/12 , F02M47/027 , F02M57/025 , F02M59/466 , F02M63/0015 , F02M63/004 , F02M63/0045
摘要： Fuel injectors equipped with direct control needle valves can add new capabilities to a fuel injection system, but can sometimes have difficulty in achieving low hydrocarbon emissions at levels comparable to ancestor fuel injectors that utilize a simple spring biased needle. The present invention seeks lower hydrocarbon emissions by reducing fuel pressure before the direct control needle valve member has reached its closed position toward the end of an injection event. Reducing fuel pressure can be accomplished in a number of ways depending upon the particular fuel injection system, including spilling fuel pressure in a cam system or possibly relieving pressure on an intensifier piston. By employing this strategy, fuel spray from the fuel injector can effectively end before the direct control needle valve member reaches its closed position, thus avoiding hydrocarbon production that could be caused by a small amount of fuel pushed into the combustion space as the needle moves over the last portion of its movement toward its closed position.
摘要翻译： 装备有直接控制针阀的燃油喷射器可以为燃料喷射系统增加新的功能，但是有时难以实现与使用简单弹簧偏压针的祖先燃料喷射器相当的低碳氢化合物排放。 本发明通过在直接控制针阀构件已经到达其关闭位置之前通过降低燃料压力来寻求更低的碳氢化合物排放，从而朝向喷射事件结束。 取决于特定的燃料喷射系统，包括在凸轮系统中溢出燃料压力或可能减轻增压器活塞上的压力，可以以多种方式实现降低燃料压力。 通过采用这种策略，在直接控制针阀构件到达其关闭位置之前，来自燃料喷射器的燃料喷射可以有效地结束，从而避免了由于当针移动时被少量的燃料推入燃烧空间而引起的碳氢化合物产生 其运动的最后部分朝向其关闭位置。
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公开(公告)号：US06955114B2
公开(公告)日：2005-10-18
申请号：US10729539
申请日：2003-12-05
申请人： Alan R. Stockner , Norval J. Wiemken , Scott F. Shafer , Gene R. Slinkard , Mark S. Cavanagh , Ye Tian
发明人： Alan R. Stockner , Norval J. Wiemken , Scott F. Shafer , Gene R. Slinkard , Mark S. Cavanagh , Ye Tian
IPC分类号： F02M47/00 , F02M47/02 , F02M51/00 , F02M63/00 , F15B13/02 , F15B13/044 , F16K11/00 , G05D16/00
CPC分类号： F02M47/027 , F02M63/0045 , F02M2200/28 , Y10T137/86622
摘要： The present invention relates to high speed control valves which are especially applicable for use in fuel injection systems. Producing a valve with a quick response time within acceptable packaging constraints and with a structure that allows the valve to be mass produced with consistent performance between valves is extremely problematic. By moving flow restrictions within the valve away from the valve seats, flow forces on the valve member can be reduced, while possibly also permitting a reduction in the necessary travel distance of the valve member to improve response time and other performance characteristics. The valve is particularly applicable in controlling hydraulic pressure applied to the closing hydraulic surface of a direct control needle valve in a fuel injector.
摘要翻译： 本发明涉及特别适用于燃料喷射系统的高速控制阀。 在可接受的包装限制内产生具有快速响应时间的阀门，并且具有允许阀门在阀门之间具有一致性能的批量生产的结构是非常有问题的。 通过将阀内的流动限制移动离开阀座，可以减小阀构件上的流动力，同时还可以减小阀构件的必要的行进距离以改善响应时间和其他性能特征。 该阀特别适用于控制施加到燃料喷射器中的直接控制针阀的关闭液压表面的液压。
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7.发明授权Hydraulic fuel injection system with independently operable direct control needle valve 失效液压燃油喷射系统，具有可独立操作的直接控制针阀公开(公告)号：US06951204B2
公开(公告)日：2005-10-04
申请号：US10637452
申请日：2003-08-08
申请人： Scott F. Shafer , Alan R. Stockner , Norval J. Wiemken , Ye Tian
发明人： Scott F. Shafer , Alan R. Stockner , Norval J. Wiemken , Ye Tian
CPC分类号： F02D41/2096 , F02D41/403 , F02M45/08 , F02M47/027 , F02M57/023 , F02M57/025
摘要： A common rail fuel injection system addresses three basic issues involving all common rail fuel injection systems. These include high performance, low variability and high efficiency. These issues are addressed by combining pressure intensification with a three way needle control valve, which exhibits substantial leakage only durring a brief instant when the valve is moving between seats. A quick acting needle control valve tightly coupled to a responsive direct control needle valve, as modified by relative timing with a flow control valve, can produce a wide variety of fuel injection rate shapes, including up to five or more discrete injections per engine cycle.
摘要翻译： 共轨燃油喷射系统涉及涉及所有共轨燃油喷射系统的三个基本问题。 这些包括高性能，低变异性和高效率。 这些问题通过将压力增强与三通针阀控制阀组合来解决，该阀在阀门在座椅之间移动时短时间内显示出实质性的泄漏。 紧密耦合到响应式直接控制针阀的快速作用针控制阀，通过与流量控制阀的相对定时进行修改，可以产生各种各样的燃料喷射速率形状，包括每个发动机循环多达五次或更多次离散喷射。
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公开(公告)号：US06178950B2
公开(公告)日：2001-01-30
申请号：US08896796
申请日：1997-07-18
申请人： Alan R. Stockner , Mike Youakim
发明人： Alan R. Stockner , Mike Youakim
IPC分类号： F02M5502
CPC分类号： F02M61/14 , F02M55/025 , F02M2200/858
摘要： A noise reducing fuel injection system includes an engine having a head with an injector bore. A fuel injector is suspended in the injector bore via a noise reducing mounting bracket. The mounting bracket has a clamping portion that clamps to the fuel injector, a support that is attached to the engine and an arm portion extending between the clamping portion and the support. The fuel injector is allowed to slide a slight distance in and out of the injector bore when the engine is running by either making the arm portions slightly flexible, by including resilient members between the support and the engine, or both.
摘要翻译： 降噪燃料喷射系统包括具有具有喷射孔的头部的发动机。 燃料喷射器通过降噪安装支架悬挂在喷射孔中。 安装支架具有夹紧到燃料喷射器的夹紧部分，附接到发动机的支撑件和在夹紧部分和支撑件之间延伸的臂部分。 当发动机运行时，通过在支撑件和发动机之间包括弹性构件，或者两者，通过使臂部分稍微柔性，允许燃料喷射器在喷射器孔内滑出一小段距离。
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公开(公告)号：US5983864A
公开(公告)日：1999-11-16
申请号：US996888
申请日：1997-12-23
申请人： Scott A. Chockley , Dennis H. Gibson , Gregory W. Hefler , Ronald D. Shinogle , Alan R. Stockner
发明人： Scott A. Chockley , Dennis H. Gibson , Gregory W. Hefler , Ronald D. Shinogle , Alan R. Stockner
CPC分类号： F02M57/025 , F02M55/02
摘要： A jumper tube with improved misalignment capability comprising a cylindrically shaped receiver portion having a central bore that receives an electronically controlled hydraulically actuated unit fuel injector, an annular groove disposed adjacent each end of the bore, a resilient seal ring disposed in each annular groove, forming a seal between the injector and the bore and providing three degrees of freedom between the injector and bore, a tubular portion having an elongated passage in fluid communication with the bore and a conduit in fluid communication with an actuating fluid manifold and the elongated passage and a bolt extending through the tubular portion, the conduit portion and a portion of the actuating fluid manifold removably attaching the jumper tube to a head of an internal combustion engine.
摘要翻译： 具有改进的不对准能力的跨接管包括圆柱形接收器部分，该接收器部分具有接收电子控制的液压致动单元燃料喷射器的中心孔，邻近孔的每个端部设置的环形槽，设置在每个环形槽中的弹性密封环， 注射器和孔之间的密封并且在注射器和孔之间提供三个自由度，管状部分具有与孔流体连通的细长通道和与致动流体歧管和细长通道流体连通的导管和 螺栓延伸穿过管状部分，导管部分和致动流体歧管的一部分可拆卸地将跳线连接到内燃机的头部。
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10.发明授权
公开(公告)号：US5871155A
公开(公告)日：1999-02-16
申请号：US872278
申请日：1997-06-10
IPC分类号： F02M61/10 , F02M45/00 , F02M57/02 , F02M59/44 , F02M61/16 , F02M61/20 , F02M63/00 , F02M51/06
CPC分类号： F02M59/44 , F02M45/00 , F02M57/025 , F02M2200/50
摘要： A hydraulically actuated fuel injector includes an injector body defining an actuation fluid chamber that opens to an actuation fluid drain, an actuation fluid inlet and a piston bore, and further defining a nozzle chamber that opens to a plunger bore and a nozzle outlet. A control valve, positioned in the injector body, has a first position that opens the actuation fluid inlet and closes the actuation fluid drain, and a second position that closes the actuation fluid inlet and opens the actuation fluid drain. A piston, positioned in the piston bore. A plunger, positioned in the plunger bore, is moveable between an upper position and a lower position. A needle valve member, positioned in the nozzle chamber, is moveable between an open position in which the nozzle outlet is open and a closed position in which the nozzle outlet is blocked. A portion of the plunger bore and the plunger define a fuel pressurization chamber that opens to the nozzle chamber. A variable rate return spring biases the piston and plunger toward their retracted positions. The variable rate return spring has a relatively low spring rate when the piston is a first distance away from its retracted position and has a relatively high spring rate when the piston is at a second distance away from its retracted position.
摘要翻译： 液压致动的燃料喷射器包括喷射器主体，其限定致动流体室，该致动流体室对致动流体排放口，致动流体入口和活塞孔打开，并进一步限定通向柱塞孔和喷嘴出口的喷嘴室。 定位在喷射器主体中的控制阀具有打开致动流体入口并关闭致动流体排放物的第一位置，以及关闭致动流体入口并打开致动流体排放物的第二位置。 活塞，定位在活塞孔中。 定位在柱塞孔中的柱塞可在上部位置和下部位置之间移动。 定位在喷嘴室中的针阀构件可以在喷嘴出口打开的打开位置和喷嘴出口被封闭的关闭位置之间移动。 柱塞孔和柱塞的一部分限定了通向喷嘴室的燃料加压室。 可变速率复位弹簧将活塞和柱塞偏压回缩位置。 当活塞距离其缩回位置是第一距离时，可变速率复位弹簧具有相对较低的弹簧刚度，并且当活塞距离其缩回位置处于第二距离时具有相对较高的弹簧刚度。
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