Injection rate shaping nozzle assembly for a fuel injector
    21.
    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

    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。

    Needle controlled fuel system with cyclic pressure generation
    22.
    发明授权
    Needle controlled fuel system with cyclic pressure generation 失效
    具有循环压力发生的针控制燃料系统

    公开(公告)号:US5676114A

    公开(公告)日:1997-10-14

    申请号:US686491

    申请日:1996-07-25

    摘要: The improved needle controlled common rail fuel system of the present invention includes split common rails serving respective sets of injectors and a respective high pressure pump associated with each rail. The high pressure pumps reciprocate to cyclically create gradual periods of increasing pressure in the common rail during the advancement stroke of the plunger followed by respective periods of decreasing pressure during the plunger's retraction stroke. The fuel injectors include an injection control valve and a needle control device for creating an injection event during a pumping event by controlling the fuel flow to drain so as to control the fuel pressure forces acting on an injector needle valve element. A flow limiting device is provided to limit the fuel flow from a control volume to drain during an injection event thus reducing parasitic losses while maintaining quick valve closing. The system also includes an improved fuel injector design including an intensification plunger assembly. In addition, a pressure energy recuperation means is provided which utilizes the pressure of the fuel in the common rail and the fuel injectors as a result of the pressure energy stored in the fuel to assist in retraction of the high pressure pump plunger during each pumping event. In addition, a wiring connection harness is provided which permits the connection of an electrically operated fuel delivery device, i.e. injector, to an electrical source simultaneously with the mounting of the fuel delivery device on the engine.

    摘要翻译: 本发明的改进的针控共轨燃料系统包括用于各组喷射器的分开的公共轨道和与每个轨道相关联的相应的高压泵。 高压泵在柱塞的推进行程期间循环地循环地在共轨中产生逐渐增加的压力周期,随后在柱塞的回缩冲程期间各自减小压力周期。 燃料喷射器包括喷射控制阀和针控制装置,用于在泵送事件期间通过控制排出的燃料流来产生喷射事件,以便控制作用在喷射器针阀元件上的燃料压力。 提供流动限制装置以在喷射事件期间将燃料流从控制体积限制到排放,从而在保持快速关阀的同时减少寄生损失。 该系统还包括改进的燃料喷射器设计,包括增强柱塞组件。 此外,提供了一种压力能量回收装置,其利用储存在燃料中的压力能量在共轨和燃料喷射器中的燃料的压力,以帮助每次泵送事件期间高压泵柱塞的收回 。 此外,提供了一种布线连接线束,其允许电动燃料输送装置即喷射器连接到电源,同时将燃料输送装置安装在发动机上。

    Apparatus, system, and method for using a fraction of engine exhaust to deliver a dosant
    23.
    发明授权
    Apparatus, system, and method for using a fraction of engine exhaust to deliver a dosant 有权
    用于使用一部分发动机排气来递送剂量的装置,系统和方法

    公开(公告)号:US08069655B2

    公开(公告)日:2011-12-06

    申请号:US11838081

    申请日:2007-08-13

    IPC分类号: F01N3/00

    摘要: An apparatus, system, and method are disclosed for delivering a dosant with engine exhaust. The apparatus includes a flow-rate regulator disposed downstream from an engine exhaust manifold that operates to control a fraction of exhaust from the engine exhaust manifold. The apparatus also includes a doser disposed downstream of the flow-rate regulator that provisions a supply of dosant to the path of the controlled fraction of exhaust, which atomizes, vaporizes, disperses, mixes with, and/or delivers the dosant.

    摘要翻译: 公开了用于递送具有发动机排气的剂量的装置,系统和方法。 该设备包括设置在发动机排气歧管的下游的流量调节器,其用于控制​​来自发动机排气歧管的排气的一部分。 该设备还包括设置在流量调节器下游的配量器,该配量器将排放剂的供应量提供给排放物的受控部分的路径,该排放物的雾化,蒸发,分散,混合和/或递送剂量。

    SYSTEM AND APPARATUS FOR CONTROLLING REVERSE FLOW IN A FLUID CONDUIT
    24.
    发明申请
    SYSTEM AND APPARATUS FOR CONTROLLING REVERSE FLOW IN A FLUID CONDUIT 失效
    用于控制流体流中逆向流动的系统和装置

    公开(公告)号:US20110232615A1

    公开(公告)日:2011-09-29

    申请号:US12748384

    申请日:2010-03-27

    IPC分类号: F02M25/07

    CPC分类号: F02M26/13

    摘要: A system includes an internal combustion engine receiving intake air from an intake manifold and providing exhaust gases to an exhaust manifold. The system further includes an exhaust gas recirculation (EGR) conduit fluidly coupling the exhaust manifold to the intake manifold. The system includes a conical spring check valve disposed in the EGR conduit, the conical spring check valve having a helically wound spring including a number of turns of decreasing diameter, where each turn progresses axially in a normal flow direction of the EGR from a previous one of the turns. Each of the turns further overlaps a previous one of the turns.

    摘要翻译: 系统包括内燃机,其从进气歧管接收进气并将排气提供给排气歧管。 该系统还包括将排气歧管流体地连接到进气歧管的排气再循环(EGR)导管。 该系统包括设置在EGR导管中的锥形弹簧止回阀,该锥形弹簧止回阀具有包括减小直径的匝数的螺旋缠绕的弹簧,其中每个回转在EGR的正常流动方向上从前一个 的转弯。 每个转弯进一步与先前的一个转弯重叠。

    Apparatus, system, and method for diverting fluid
    25.
    发明申请
    Apparatus, system, and method for diverting fluid 有权
    用于转移流体的装置,系统和方法

    公开(公告)号:US20090235997A1

    公开(公告)日:2009-09-24

    申请号:US12454897

    申请日:2009-05-26

    IPC分类号: B67D5/52 F16L37/107

    摘要: A pump component is removed from a port of a suction-side fluid cavity of a high-pressure fluid pump. The pump component performs a pump function for the high-pressure fluid pump. A primary coupler connects to the port. The pump component connects to the primary coupler. A diverter fluid passage diverts a low-pressure fluid from the primary coupler to an auxiliary fluid delivery system. The primary coupler communicates the low-pressure fluid through the pump component and primary coupler to the port.

    摘要翻译: 泵组件从高压流体泵的吸入侧流体腔的端口移除。 泵组件对高压流体泵执行泵功能。 主耦合器连接到端口。 泵组件连接到主耦合器。 分流器通道将低压流体从主耦合器转移到辅助流体输送系统。 主联接器将低压流体通过泵组件和主耦合器连接到端口。

    Apparatus and method for determining engine static timing errors and overall system bandwidth
    29.
    发明授权
    Apparatus and method for determining engine static timing errors and overall system bandwidth 有权
    用于确定发动机静态定时误差和整个系统带宽的装置和方法

    公开(公告)号:US06353791B1

    公开(公告)日:2002-03-05

    申请号:US09564776

    申请日:2000-05-04

    IPC分类号: F02M4512

    摘要: A strategy for quantifying and compensating for between-engine variations in engine static timing, fuel pump phasing and overall system bandwidth includes a control circuit operable to manage a fuel control system including a high pressure, cyclically operable fuel pump and at least one fuel injector operable to supply fuel to an internal combustion engine from a fuel collection unit. In one embodiment, the strategy of the present invention is operable to determine peak values of the fuel pressure within fuel collection unit and corresponding engine position values for a number of different engine speeds and solve a corresponding model-based system of equations to determine a combined engine static timing and fuel pump phasing error as well as a first overall system bandwidth value. In another embodiment, the strategy of the present invention is operable to determine peak values of the pressure within a combustion chamber of the engine along with associated engine position values for a number of different engine speeds and solve for the engine static timing error alone and/or a second overall system bandwidth value. In yet another embodiment, the two foregoing strategies may be combined to produce separately the first and second bandwidth values as well as the individual engine static timing and fuel pump phasing error values. In any case, the computed error and bandwidth values may be used to improve the accuracy of sampled engine and/or fuel control system parameters as they relate to engine position.

    摘要翻译: 用于量化和补偿发动机静态定时,燃料泵相位和总体系统带宽之间的发动机间变化的策略包括控制电路,其可操作以管理燃料控制系统,该燃料控制系统包括高压循环可操作的燃料泵和至少一个燃料喷射器,其可操作 以从燃料收集单元向内燃机供应燃料。 在一个实施例中,本发明的策略可用于确定燃料收集单元内的燃料压力的峰值以及对于多个不同发动机转速的相应的发动机位置值,并且解决相应的基于模型的方程组以确定组合 发动机静态定时和燃油泵相位误差以及第一个整体系统带宽值。 在另一个实施例中,本发明的策略可用于确定发动机的燃烧室内的压力的峰值以及多个不同的发动机转速的相关联的发动机位置值,并且解决单独的发动机静态定时误差和/ 或第二个整体系统带宽值。 在另一个实施例中,可以组合两个前述策略以分别产生第一和第二带宽值以及各个发动机静态定时和燃料泵相位误差值。 在任何情况下,计算的误差和带宽值可用于提高与发动机位置有关的采样发动机和/或燃料控制系统参数的精度。

    Low leakage plunger and barrel assembly for high pressure fluid system
    30.
    发明授权
    Low leakage plunger and barrel assembly for high pressure fluid system 失效
    低泄漏柱塞和桶组件用于高压流体系统

    公开(公告)号:US5899136A

    公开(公告)日:1999-05-04

    申请号:US769117

    申请日:1996-12-18

    IPC分类号: F02M59/44 F01B11/02

    CPC分类号: F02M59/44 F02M59/442

    摘要: An improved plunger and barrel assembly is provided which includes a plunger reciprocally mounted in a cavity formed in the barrel and a leakage flow reduction device positioned in the cavity for reducing fluid leakage flow around the plunger thus increasing system efficiency. The leakage flow reduction device includes a sealing sleeve removably mounted in the cavity between the plunger and the barrel, which includes a bore for slidably receiving the plunger to form an annular clearance gap between the plunger and the bore. The sealing sleeve is designed to resiliently flex in response to fluid pressure forces to reduce the annular clearance gap so as to minimize fluid leakage through the annular clearance gap. The sealing sleeve is formed as a separate piece from the barrel to permit simple, low cost replacement. The sealing sleeve is preferably applied to a fuel pump having a pump plunger for pressurizing fuel in a high pressure chamber.

    摘要翻译: 提供了一种改进的柱塞和筒组件,其包括往复安装在形成在筒体中的空腔中的柱塞和位于空腔中的泄漏流减少装置,用于减少柱塞周围的流体泄漏流动,从而提高系统效率。 泄漏流量减少装置包括可移除地安装在柱塞和筒体之间的空腔中的密封套筒,其包括用于可滑动地容纳柱塞以在柱塞和孔之间形成环形间隙的孔。 密封套被设计成响应于流体压力而弹性弯曲以减小环形间隙,以便使通过环形间隙的流体泄漏最小化。 密封套筒形成为与筒体分离的部件,以允许简单,低成本的更换。 密封套筒优选地应用于具有用于在高压室中对燃料加压的泵柱塞的燃料泵。