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16 条记录 (耗时 0.017 秒)

    Rate shaping plunger/piston assembly for a hydraulically actuated fuel injector
    2.
    发明授权
    Rate shaping plunger/piston assembly for a hydraulically actuated fuel injector 失效
    用于液压致动燃料喷射器的速率成形柱塞/活塞组件

    公开(公告)号：US5655501A

    公开(公告)日：1997-08-12

    申请号：US644023

    申请日：1996-05-09

    申请人： Gregory G. Hafner

    发明人： Gregory G. Hafner

    IPC分类号： F02M47/00 ,  F02M45/00 ,  F02M57/02 ,  F02M59/10 ,  F02M59/44 ,  F02M61/10 ,  F02M61/16 ,  F02M37/04

    CPC分类号： F02M57/026 ,  F02M45/00 ,  F02M57/025 ,  F02M59/102 ,  F02M59/105 ,  F02M59/44

    摘要： In hydraulically actuated fuel injectors, an intensifier piston is utilized with a plunger for raising fuel pressure to initiate an injection event with a VOP type fuel injector. The present invention lowers the mass flow rate of fuel at the beginning of each injection event by slowing the rate of the plunger relative to the intensifier piston by utilizing a spring to separate the two. As the spring compresses, energy from the high pressure actuation fluid is absorbed rather than transferred to raise fuel pressure. A short time into each injection event, the spring becomes fully compressed and the intensifier piston and plunger begin moving in rigid unison for the remaining of the injection event in a manner typical of prior art fuel injectors. The lowering of injection mass flow rate toward the beginning of each injection event results in improved engine performance and a lowering of undesirable exhaust emissions, especially NOx compounds.

    摘要翻译： 在液压致动的燃料喷射器中，增压器活塞与柱塞一起使用以提高燃料压力，以启动具有VOP型燃料喷射器的喷射事件。 本发明通过利用弹簧来分离两者来降低柱塞相对于增压器活塞的速率来降低每次喷射事件开始时燃料的质量流量。 当弹簧压缩时，来自高压致动流体的能量被吸收而不是转移以提高燃料压力。 在每次喷射事件中短时间内，弹簧变得完全压缩，并且增压器活塞和柱塞以现有技术的燃料喷射器典型的方式开始刚性地一致地移动用于剩余的喷射事件。 每次注射事件开始时注射质量流量的降低导致发动机性能的提高和不希望的废气排放量的降低，特别是NOx化合物。

    Tuned actuating fluid inlet manifold for a hydraulically-actuated fuel injection system
    3.
    发明授权
    Tuned actuating fluid inlet manifold for a hydraulically-actuated fuel injection system 失效
    调节用于液压致动燃料喷射系统的致动流体入口歧管

    公开(公告)号：US5297523A

    公开(公告)日：1994-03-29

    申请号：US23770

    申请日：1993-02-26

    申请人： Gregory G. Hafner ,  Jeffrey C. Huang ,  Xiangying Liu

    发明人： Gregory G. Hafner ,  Jeffrey C. Huang ,  Xiangying Liu

    IPC分类号： F02M47/00 ,  F02M55/00 ,  F02M55/02 ,  F02M57/02 ,  F02M59/10 ,  F02M63/02

    CPC分类号： F02M47/00 ,  F02M57/025 ,  F02B2275/14 ,  F02M2200/28 ,  Y02T10/123

    摘要： An improved actuating fluid inlet manifold for a plurality of hydraulically-actuated fuel injectors. The manifold includes fluid dynamic tuning apparatus for controlling the flow of relatively high pressure actuating fluid between the common rail passage of the manifold and the injectors. The fluid dynamic tuning apparatus includes a predetermined flow restriction defined in each of the rail branch passages of the manifold. Advantages of the fluid dynamic tuning apparatus include improved injector performance and/or a reduction in structural stresses of various engine components.

    摘要翻译： 用于多个液压致动燃料喷射器的改进的致动流体入口歧管。 歧管包括用于控制歧管的共轨通道和喷射器之间的相对高压致动流体的流动的流体动力调节装置。 流体动力调节装置包括限定在歧管的每个轨道支路通道中的预定流量限制。 流体动力调节装置的优点包括改进的喷射器性能和/或各种发动机部件的结构应力的减小。

    Method and apparatus for delivering multiple fuel injections to the cylinder of an internal combustion engine
    4.
    再颁专利
    Method and apparatus for delivering multiple fuel injections to the cylinder of an internal combustion engine 失效
    用于向内燃机的气缸输送多次燃料喷射的方法和装置

    公开(公告)号：USRE40144E1

    公开(公告)日：2008-03-11

    申请号：US11356424

    申请日：2006-02-16

    申请人： Kevin P. Duffy ,  Eric C. Fluga ,  Brian G. McGee ,  Matthew R. Roth ,  Gregory G. Hafner

    发明人： Kevin P. Duffy ,  Eric C. Fluga ,  Brian G. McGee ,  Matthew R. Roth ,  Gregory G. Hafner

    IPC分类号： F02B3/00 ,  F02B3/02

    CPC分类号： F02D41/3035 ,  F02B3/06 ,  F02D41/402 ,  F02D41/403 ,  F02D41/405 ,  Y02T10/128 ,  Y02T10/44

    摘要： A fuel injection control system and method for delivering multiple fuel injections to a cylinder of an engine during a fuel injection event based upon engine operating conditions, the control system including an electronic controller coupled to an electrically controlled fuel injector, and a plurality of sensors coupled to the controller for inputting certain signals representative of certain engine operating conditions of the engine, the controller being operable to output a fuel injection signal to the fuel injector to deliver a first, a second, and a third fuel shot to the cylinder during a fuel injection event based upon the sensor signals. The controller also delivers each of the multiple fuel injection shots within defined cylinder piston displacement parameters during a particular piston stroke, within defined fuel apportionment limits, and within defined delay limits between each respective fuel shot so as to control exhaust emissions.

    摘要翻译： 一种燃料喷射控制系统和方法，用于在燃料喷射事件期间基于发动机操作条件将多个燃料喷射传递到发动机的气缸，所述控制系统包括耦合到电控燃料喷射器的电子控制器和耦合到 控制器用于输入表示发动机的某些发动机工作条件的某些信号，所述控制器可操作地将燃料喷射信号输出到燃料喷射器，以在燃料期间将第一，第二和第三燃料喷射到气缸中 基于传感器信号的注入事件。 控制器还在特定的活塞冲程内，在确定的燃料分配限度内，并且在每个相应的燃料喷射之间的限定的延迟限度内，将定义的气缸活塞位移参数内的多个燃料喷射射击中的每一个传送到控制废气排放。

    Accurate deliver of total fuel when two injection events are closely coupled
    6.
    发明授权
    Accurate deliver of total fuel when two injection events are closely coupled 失效
    当两个注射事件紧密耦合时，准确地输送总燃料

    公开(公告)号：US06415762B1

    公开(公告)日：2002-07-09

    申请号：US09616004

    申请日：2000-07-13

    申请人： Gregory G. Hafner ,  Brian G. McGee

    发明人： Gregory G. Hafner ,  Brian G. McGee

    IPC分类号： F02B300

    CPC分类号： F02D41/3827 ,  F02B3/06 ,  F02D41/403 ,  F02D41/405 ,  Y02T10/44

    摘要： When two fuel shots such as the main and anchor fuel shots are closely coupled, the controller is operable to determine a total main and anchor fuel quantity, a main shot duration, and anchor delay. The total main and anchor fuel quantity is determined by subtracting a pilot shot fuel amount from the governor fuel output, and a sensor senses a rail pressure. If a triggering condition is met, preferably a main shot fuel amount being less than or equal to a minimum main shot fuel amount, the anchor duration is determined from a map using the main shot duration, anchor delay, rail pressure, and total main and anchor fuel quantity as factors for setting the anchor duration.

    摘要翻译： 当主燃料喷射和主燃料喷射两个燃料喷射紧密耦合时，控制器可操作地确定总主燃料量，主喷射持续时间和锚延迟。 通过从调速器燃料输出中减去先导喷射燃料量来确定总主燃料量和主燃料量，并且传感器感测轨道压力。 如果满足触发条件，优选主喷射燃料量小于或等于最小主喷燃料量，则使用主喷射持续时间，锚延迟，轨道压力和总主要的地图确定锚固持续时间，并且 锚定燃料量作为锚定持续时间的因素。

    Method and apparatus for controlling the current level of a fuel injector signal during sudden acceleration
    7.
    发明授权
    Method and apparatus for controlling the current level of a fuel injector signal during sudden acceleration 失效
    用于在突然加速期间控制燃料喷射器信号的当前水平的方法和装置

    公开(公告)号：US06390082B1

    公开(公告)日：2002-05-21

    申请号：US09616002

    申请日：2000-07-13

    申请人： Kevin P. Duffy ,  Gregory G. Hafner ,  Brian G. McGee ,  Matthew R. Roth

    发明人： Kevin P. Duffy ,  Gregory G. Hafner ,  Brian G. McGee ,  Matthew R. Roth

    IPC分类号： F02D4110

    CPC分类号： F02D41/10 ,  F02D41/20 ,  F02D41/3809 ,  F02D41/402 ,  F02D2200/1012 ,  Y02T10/44

    摘要： An apparatus and method for controlling fuel injection signals to an engine during a sudden acceleration event. The present apparatus and method includes an electronic controller coupled to the electronically controlled fuel injectors of the engine and operable to recognize a sudden acceleration condition based upon certain sensed conditions associated with the acceleration of the engine. The controller is further operable to increase the pull-in current level and/or the hold-in current level of the fuel injection signals to improve fuel injector performance, fuel consumption, and emissions when a sudden acceleration event is recognized. Shortening the duration of the fuel shots associated with the fuel injection signal helps offset additional electrical power requirements associated with the higher current levels.

    摘要翻译： 一种用于在突然加速事件期间控制向发动机的燃料喷射信号的装置和方法。 本装置和方法包括耦合到发动机的电子控制燃料喷射器的电子控制器，并且可操作以基于与发动机的加速度相关联的某些感测到的条件来识别突然的加速条件。 控制器还可操作以增加燃油喷射信号的吸入电流电平和/或保持电流电平，以在识别突发加速事件时提高燃料喷射器性能，燃料消耗和排放。 缩短与燃料喷射信号相关联的燃料喷射的持续时间有助于抵消与较高电流水平相关联的附加电力需求。

    Pressure control system for a variable displacement hydraulic pump
    9.
    发明授权
    Pressure control system for a variable displacement hydraulic pump 失效
    变量液压泵的压力控制系统

    公开(公告)号：US5800130A

    公开(公告)日：1998-09-01

    申请号：US769872

    申请日：1996-12-19

    申请人： James R. Blass ,  Gregory G. Hafner

    发明人： James R. Blass ,  Gregory G. Hafner

    IPC分类号： F04B49/00 ,  F04B1/26 ,  F16D31/02

    CPC分类号： F04B49/002

    摘要： A displacement control valve includes a valve element having a first operative position communicating a displacement controller of a variable displacement hydraulic pump with a tank for increasing the pump displacement and a second operative position communicating a discharge passage of the pump with the control port for decreasing pump displacement. The discharge passage communicates with a first end of the valve element to generate a force biasing the valve element toward the second position. An opposing biasing force is exerted on the valve element in opposition to the pressure generated force acting on the first end of the valve element so that a predetermined pressure level is established in the discharge passage when the forces acting on the valve element are equalized. The opposing biasing force is generated by a spring disposed to exert a substantially constant biasing force on the valve element and an orifice device for generating a fluid pressure at the second end of the valve element commensurate with the pressure in the discharge passage. A variable mechanical biasing force can be exerted on the valve element in concert with the opposing biasing force to change the pressure level in the discharge passage proportional to the level of the mechanical biasing force.

    摘要翻译： 排量控制阀包括具有第一操作位置的阀元件，该第一操作位置将可变排量液压泵的位移控制器与用于增加泵排量的罐连通，以及将泵的排出通道与控制端口连通的第二操作位置，以减少泵 移位。 排出通道与阀元件的第一端连通以产生朝向第二位置偏压阀元件的力。 与作用在阀元件的第一端上的压力产生力相对的阀元件上施加相反的偏置力，使得当作用在阀元件上的力相等时在排出通道中建立预定的压力水平。 相反的偏压力由设置成对阀元件施加基本上恒定的偏压力的弹簧产生，以及孔装置，用于在阀元件的第二端产生与排放通道中的压力相称的流体压力。 可以与相对的偏压力一起在阀元件上施加可变的机械偏置力，以改变排放通道中的压力水平与机械偏置力的水平成比例。

    Injection rate shaping device for a fill metered hydraulically-actuated fuel injection system
    10.
    发明授权
    Injection rate shaping device for a fill metered hydraulically-actuated fuel injection system 失效
    用于填充计量液压致动燃料喷射系统的喷射率成形装置

    公开(公告)号：US5730104A

    公开(公告)日：1998-03-24

    申请号：US801378

    申请日：1997-02-19

    申请人： Gregory G. Hafner

    发明人： Gregory G. Hafner

    IPC分类号： F02M45/06 ,  F02M45/12 ,  F02M57/02 ,  F02M59/10 ,  F02M37/04

    CPC分类号： F02M57/026 ,  F02M45/066 ,  F02M45/12 ,  F02M57/025 ,  F02M59/105

    摘要： A hydraulically-actuated fuel injector comprises an injector body that defines a nozzle chamber that opens to a nozzle outlet and a plunger bore, and a spill port that opens into the plunger bore. A hydraulic means within the injector body pressurizes fuel in the nozzle chamber, and includes a plunger with an end face, a side surface and a centerline. The plunger is positioned in the plunger bore and moveable a stroke distance between a retracted position and an advanced position. A needle valve member is positioned in the nozzle chamber and moveable between an open position in which the nozzle outlet is open and a closed position in which the nozzle outlet is blocked. The plunger includes a groove in its side surface that is arranged in a helical pattern about the centerline and further includes a spill passage extending between the end face and the groove. A pin and guide slot assembly, within the injector body, are provided for rotating the plunger about the centerline when the plunger is moving a portion of the stroke distance between its advanced position and its retracted position. Finally, the injector includes a control valve for stopping the plunger at a metered position between its retracted position and its advanced position when the plunger is retracting from its advanced position.

    摘要翻译： 液压致动的燃料喷射器包括喷射器主体，其限定向喷嘴出口和柱塞孔打开的喷嘴室以及通向柱塞孔的溢出口。 喷射器主体内的液压装置对喷嘴室中的燃料加压，并且包括具有端面，侧面和中心线的柱塞。 柱塞定位在柱塞孔中并且可在缩回位置和前进位置之间移动行程距离。 针阀构件定位在喷嘴室中，并且可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。 柱塞在其侧表面中包括围绕中心线以螺旋形图案布置的凹槽，并且还包括在端面和凹槽之间延伸的溢流通道。 在喷射器主体内设有一个销和导槽组件，用于当柱塞将其行程距离的一部分移动到其前进位置与其缩回位置之间时，围绕中心线旋转柱塞。 最后，喷射器包括控制阀，用于当柱塞从其前进位置缩回时，将柱塞停止在其缩回位置和其前进位置之间的计量位置。