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    Variable spray hole fuel injector with dual actuators
    3.
    发明授权
    Variable spray hole fuel injector with dual actuators 有权

    公开(公告)号：US06557779B2

    公开(公告)日：2003-05-06

    申请号：US09796823

    申请日：2001-03-02

    申请人： Julius P. Perr ,  J. Victor Perr ,  Lester L. Peters ,  Donald J. Benson ,  John T. Carroll, III

    发明人： Julius P. Perr ,  J. Victor Perr ,  Lester L. Peters ,  Donald J. Benson ,  John T. Carroll, III

    IPC分类号： F02M4116

    CPC分类号： F02M47/027 ,  F02M45/04 ,  F02M45/086 ,  F02M45/12 ,  F02M63/0017 ,  F02M63/0064 ,  F02M2200/21 ,  F02M2547/003

    摘要： An improved closed nozzle injector assembly for injecting high pressure fuel into the combustion chamber of an engine is provided which includes a first needle valve element associated with a first set of injector orifices, a first needle valve control device for controlling the opening and closing of the first needle valve, a second needle valve associated with a second set of injector orifices and a second needle valve control device for controlling the opening and closing of the second needle valve. Each needle valve control device includes a control volume positioned at one end of the respective needle valve, a control volume charge circuit for supplying high pressure fuel to the respective control volume and the respective injection control valve for controlling the flow of high pressure fuel from the respective control volume to a low pressure drain thereby controlling the movement of the respective needle valve. Using a dedicated control volume and injection control valve for each needle valve element permits effective control over the duration of pilot and post fuel injection events while also providing variable rate shaping capability for optimized emissions and fuel economy. The present dual needle valve element injector includes various components such as biasing springs which are positioned and interconnected to other components in a manner which creates a simple, compact fuel injector package providing independent control of two sets of spray orifices in one injector.

    Injection rate shaping nozzle assembly for a fuel injector
    4.
    发明授权
    Injection rate shaping nozzle assembly for a fuel injector 失效
    用于燃料喷射器的喷射成形喷嘴组件

    公开(公告)号：US5765755A

    公开(公告)日：1998-06-16

    申请号：US787963

    申请日：1997-01-23

    申请人： Lester L. Peters ,  Julius P. Perr ,  A. S. Ghuman ,  Benjamin M. Yen ,  Chad L. Buchanan ,  Robert Samuel ,  Kevin L. Vogt ,  John T. Carroll, III ,  James E. Denton ,  David E. Schisler

    发明人： Lester L. Peters ,  Julius P. Perr ,  A. S. Ghuman ,  Benjamin M. Yen ,  Chad L. Buchanan ,  Robert Samuel ,  Kevin L. Vogt ,  John T. Carroll, III ,  James E. Denton ,  David E. Schisler

    IPC分类号： F02M45/10 ,  F02M61/04 ,  F02M61/16 ,  F02M61/18 ,  B05B9/00 ,  F02M47/02

    CPC分类号： F02M61/18 ,  F02M45/10 ,  F02M61/042 ,  F02M61/168

    摘要： An injection rate shaping nozzle assembly for a fuel injector is provided which includes a closed nozzle valve element and a rate shaping control device including an injection spill circuit for spilling a portion of the fuel to be injected to produce a predetermined time varying change in the flow rate of fuel injected into a combustion chamber. The spill circuit includes a spill passage integrally formed in the nozzle valve element. The rate shaping control device may include a spill accelerating chamber in formed in the nozzle valve element for creating a rapid increase in the spill flow rate. A spill circuit purge device is provided to remove fuel from the spill circuit and accelerating chamber between each of the injection events thereby ensuring an unimpeded, effective spill fuel flow during the next spill event. The purge device includes a purge passage formed of a predetermined size for restricting the flow of purge gas to ensure sufficient fuel removal from the injection spill circuit while avoiding excessive purge gas flow. The purge passage may include an annular clearance gap formed between the nozzle valve element and the nozzle housing wall, or alternatively, may include an orifice passage formed in the inner portion of the nozzle valve element. An improved method for forming a nozzle valve element having an axial center passage is also disclosed.

    摘要翻译： 提供了一种用于燃料喷射器的喷射率成形喷嘴组件，其包括封闭的喷嘴阀元件和速率整形控制装置，该速率整形控制装置包括用于溢出待喷射的燃料的一部分以产生流量的预定时变变化的喷射泄漏电路 喷入燃烧室的燃料的速率。 泄漏回路包括一体形成在喷嘴阀元件中的溢流通路。 速率整形控制装置可以包括形成在喷嘴阀元件中的溢流加速室，用于产生溢流量的快速增加。 提供溢流回路吹扫装置以在每次喷射事件之间从泄漏回路和加速室中除去燃料，从而确保在下一个溢出事件期间不受阻碍地有效地溢出燃料流。 净化装置包括由预定尺寸形成的吹扫通道，用于限制净化气体的流动，以确保足够的燃料从喷射泄漏电路中移除，同时避免过多的吹扫气体流动。 净化通道可以包括形成在喷嘴阀元件和喷嘴壳体壁之间的环形间隙，或者可以包括形成在喷嘴阀元件的内部中的孔口通道。 还公开了一种用于形成具有轴向中心通道的喷嘴阀元件的改进方法。

    High pressure unit fuel injector with timing chamber pressure control
    5.
    发明授权
    High pressure unit fuel injector with timing chamber pressure control 失效
    高压单元燃油喷射器，具有定时室压力控制

    公开(公告)号：US4986472A

    公开(公告)日：1991-01-22

    申请号：US402893

    申请日：1989-09-05

    申请人： Timothy A. Warlick ,  Jeffrey L. Campbell ,  Lester L. Peters ,  Michael E. Lucas ,  Julius P. Perr ,  Kuang-Wen T. Wan

    发明人： Timothy A. Warlick ,  Jeffrey L. Campbell ,  Lester L. Peters ,  Michael E. Lucas ,  Julius P. Perr ,  Kuang-Wen T. Wan

    IPC分类号： F02M57/02 ,  F02M59/30

    CPC分类号： F02M57/021 ,  F02M57/023 ,  F02M57/024 ,  F02M59/30

    摘要： A fuel injector includes an injector housing having a plunger assembly disposed within a central axial bore and including a lower plunger, an intermediate plunger, and an upper plunger. The lower plunger reciprocates within the central bore to meter a variable quantity of fuel during downward portions of the reciprocating motion. A timing spring is wound around the upper portion of the lower plunger to bias the lower plunger upwardly. A timing chamber formed between the upper and intermediate plungers receives timing fluid to create a hydraulic link between the plungers. Timing fluid exits the timing chamber through a central passage, which may have a reduced area regulating orifice, formed through the intermediate plunger, which is ordinarily closed by a valve mechanism. The valve mechanism is acted upon in part by the timing spring. To improve the pressure regulation using a higher spring load and to accommodate a larger area drainage passage, a valve spring biases closed the passage. The force provided by the valve spring is predetermined to open the valve mechanism and drain timing fluid when the timing fluid pressure exceeds the maximum pressure during injection. After injection is completed, timing fluid exits from the timing chamber either through the central passage or through a spillport which is closable by the nonbeveled lower portion of the upper plunger.

    Fuel injector having a cooled lower nozzle body
    6.
    发明授权
    Fuel injector having a cooled lower nozzle body 有权
    燃料喷射器具有冷却的下喷嘴体

    公开(公告)号：US07021558B2

    公开(公告)日：2006-04-04

    申请号：US10423010

    申请日：2003-04-25

    申请人： Cariappa M. Chenanda ,  David L. Buchanan ,  Lester L. Peters

    发明人： Cariappa M. Chenanda ,  David L. Buchanan ,  Lester L. Peters

    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。

    Fuel injector with pressure balanced needle valve
    9.
    发明授权
    Fuel injector with pressure balanced needle valve 失效
    带压力平衡针阀的燃油喷射器

    公开(公告)号：US5979803A

    公开(公告)日：1999-11-09

    申请号：US939007

    申请日：1997-09-26

    申请人： Lester L. Peters ,  Julius P. Perr ,  Benjamin M. Yen ,  George L. Muntean ,  J. Victor Perr ,  John D. Crofts

    发明人： Lester L. Peters ,  Julius P. Perr ,  Benjamin M. Yen ,  George L. Muntean ,  J. Victor Perr ,  John D. Crofts

    IPC分类号： F02M47/04 ,  F02M51/06 ,  F02M61/04 ,  F02M63/00 ,  F02M45/00

    CPC分类号： F02M47/046 ,  F02M51/0603 ,  F02M51/061 ,  F02M51/0653 ,  F02M51/0657 ,  F02M61/042 ,  F02M2200/702

    摘要： An improved fuel injector for providing precise control over injection timing, quantity and rate shape is provided which includes a fuel pressure balancing device for balancing the fuel pressure forces acting on a needle valve element while the element is in both the closed and open positions thereby permitting an actuator to more precisely and predictably control the movement of the needle valve element. The fuel pressure balancing device includes a cavity formed in the needle valve element and pressure balancing surfaces formed on the needle valve element and positioned in the cavity. The actuator may be a piezoelectric actuator for compressing actuating fluid in an actuating fluid circuit which includes a fluid chamber positioned adjacent a needle valve element and fluidically separate from a fuel supply circuit for supplying high pressure fuel for injection. Actuating fluid pressure in the chamber acts on the needle valve element to initiate injection. In another embodiment, the needle valve element is directly controlled by a solenoid actuator.

    摘要翻译： 提供了一种用于提供对喷射正时，数量和速率形状的精确控制的改进的燃料喷射器，其包括用于平衡作用在针阀元件上的燃料压力的燃料压力平衡装置，同时元件处于关闭位置和打开位置，从而允许 致动器以更精确和可预测地控制针阀元件的运动。 燃料压力平衡装置包括形成在针阀元件中的空腔和形成在针阀元件上并定位在空腔中的压力平衡表面。 致动器可以是用于压缩致动流体回路中的致动流体的压电致动器，该致动流体回路包括邻近针阀元件定位的流体室，并与用于喷射高压燃料的燃料供应回路流体分离。 腔室中的致动流体压力作用在针阀元件上以开始注射。 在另一个实施例中，针阀元件由螺线管致动器直接控制。

    Early exhaust valve opening control system and method
    10.
    发明授权
    Early exhaust valve opening control system and method 失效
    早期排气门开启控制系统及方法

    公开(公告)号：US5937807A

    公开(公告)日：1999-08-17

    申请号：US050033

    申请日：1998-03-30

    申请人： Lester L. Peters ,  David A. Vittorio ,  P. Douglas Free ,  Amarjit S. Ghuman ,  Harold G. Weber ,  Canden R. Nelson

    发明人： Lester L. Peters ,  David A. Vittorio ,  P. Douglas Free ,  Amarjit S. Ghuman ,  Harold G. Weber ,  Canden R. Nelson

    IPC分类号： F01L13/00

    CPC分类号： F01L13/0031 ,  F01L1/181 ,  F01L1/26 ,  F01L13/06

    摘要： An exhaust valve system for an internal combustion engine including a turbocharger is provided for effectively increasing the turbocharged boost pressure at low load engine conditions thereby effectively improving engine transient response. The exhaust valve system includes an exhaust valve control device operable in a normal timing mode for permitting normal opening of one or more exhaust valves at a normal opening crank angle, and in an advanced timing mode for advancing the timing of the opening of the exhaust valve to an advanced opening crank angle prior to the normal opening crank angle while maintaining the timing of normal closing of the exhaust valves at a normal closing crank angle. In one embodiment, the exhaust valve control device includes a tappet and an actuating fluid supply which operate to move the tappet between expanded and collapsed states to advance the opening of the exhaust valve while permitting normal exhaust valve lift to be introduced prior to peak exhaust valve lift thereby maintaining the normal peak lift and the normal timing of exhaust valve closure. In a second embodiment, the exhaust valve control device includes a dedicated advanced timing mode rocker lever capable of selectively actuating one of a pair of exhaust valves to create an early opening exhaust event prior to a normal exhaust event.

    摘要翻译： 提供一种用于包括涡轮增压器的内燃机的排气门系统，用于在低负载发动机条件下有效地增加涡轮增压增压压力，从而有效地改善发动机瞬态响应。 排气门系统包括排气门控制装置，该排气门控制装置可以在正常定时模式下操作，以允许一个或多个排气门以正常的开启曲柄角正常打开，并且在提前定时模式中，用于使排气门的打开时间延长 在正常的开启曲柄角之前达到先进的开启曲柄角，同时保持排气门在正常的关闭曲柄角处的正常关闭的正时。 在一个实施例中，排气门控制装置包括挺杆和致动流体供应器，其操作以在膨胀和收缩状态之间移动挺杆，以推进排气门的打开，同时允许在峰值排气阀之前引入正常的排气门升程 从而保持正常的峰值升程和排气门关闭的正常时间。 在第二实施例中，排气门控制装置包括专用的高级定时模式摇杆杆，其能够选择性地致动一对排气门中的一个，以在正常排气事件之前产生早期打开排气事件。