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公开(公告)号：US06705543B2
公开(公告)日：2004-03-16
申请号：US09933898
申请日：2001-08-22
IPC分类号： F02M4702
CPC分类号： F02M47/027 , F02M45/04 , F02M45/086 , F02M45/12 , F02M53/04 , F02M59/466 , F02M59/468 , F02M61/042 , F02M61/12 , F02M61/1806 , F02M61/20 , F02M61/205 , F02M2200/21 , F02M2200/46
摘要： A variable pressure fuel injection system and multi-flow rate injector is provided which produces multiple fuel injection flow rates from a common source of pressurized fuel to enable reductions in emissions, combustion noise and particulates while improving fuel consumption. The present invention includes inner and outer needle valve elements biased into respective closed positions against respective valve seats for controlling the flow through corresponding sets of injection orifices. The movement of each valve is controlled by an injection control valve controlling the drain flow of control fuel from respective control volumes positioned at outer ends of the valve elements. Valve element bias spring preloads along with control flow orifices and needle valve element surface areas are selected to cause, for example, single valve operation at low fuel supply pressure and dual valve operation at high supply pressure.
摘要翻译： 提供了可变压力燃料喷射系统和多流量喷射器，其从共同的加压燃料源产生多个燃料喷射流量，以在减少燃料消耗的同时减少排放，燃烧噪声和颗粒物。 本发明包括内针和外针阀元件，其相对于相应的阀座偏压到相应的关闭位置，用于控制通过相应组的注射孔的流量。 每个阀的运动通过一个喷射控制阀来控制，该喷射控制阀控制控制燃料从定位在阀元件外端的相应控制体积的排出流。 选择阀元件偏压弹簧与控制流量孔和针阀元件表面区域的预加载，例如在低燃料供应压力下进行单阀操作，并在高供应压力下双阀操作。
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公开(公告)号：US06823834B2
公开(公告)日：2004-11-30
申请号：US10417829
申请日：2003-04-17
IPC分类号： F02B300
CPC分类号： F02D41/22 , F02D41/2496 , F02D41/3809 , F02D41/40 , F02D2041/224 , F02D2041/227 , F02D2200/0612 , F02D2200/0616 , Y02T10/44
摘要： A system for estimating an auxiliary-injected fuel quantity includes a fuel injector for injecting fuel into an engine, a fuel pump supplying fuel to a fuel collection unit that then supplies fuel to the fuel injector, and a control circuit that generates an auxiliary-injected fuel quantity estimation model by disabling the fuel pump prior to fuel injection, and enabling the fuel pump to resume fuel pumping following fuel injection, by the fuel injector, determines a first pressure in the fuel collection unit after stabilization of the fuel pressure therein following disablement of the fuel pump and prior to the fuel injection, determines a second pressure in the fuel collection unit after the fuel injection and prior to resuming pumping of fuel by the fuel pump, and forms the model as a function of the first and second pressures and an injector on-time for a number of different engine operating conditions.
摘要翻译： 用于估计辅助喷射燃料量的系统包括用于将燃料喷射到发动机中的燃料喷射器，向向燃料喷射器供应燃料的燃料收集单元供应燃料的燃料泵，以及产生辅助喷射的燃料的控制电路 燃料量估计模型，通过在燃料喷射之前禁用燃料泵，以及使得燃料泵能够通过燃料喷射器在燃料喷射之后恢复燃料泵送，在确定燃料收集单元中的燃料压力之后确定其中的第一压力 并且在燃料喷射之前确定燃料收集单元中的燃料喷射之后的第二压力，并且在由燃料泵重新启动燃料之前确定燃料收集单元中的第二压力，并且作为第一和第二压力的函数形成模型，并且 一个注射器在时间上为许多不同的发动机工作条件。
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3.发明授权Cyclic pressurization including plural pressurization units interconnected for energy storage and recovery 有权循环加压，包括互连用于能量储存和回收的多个加压单元公开(公告)号：US06405709B1
公开(公告)日：2002-06-18
申请号：US09547713
申请日：2000-04-11
IPC分类号： F02M4100
CPC分类号： F02M63/0225 , F02D41/3809 , F02D2041/224 , F02D2041/225 , F02D2041/3881 , F02D2041/389 , F02M55/00 , F02M57/023 , F02M59/36 , F02M59/366 , F02M63/0007 , F02M63/027
摘要： A fuel injection system is disclosed for an internal combustion engine that has multiple combustion chambers and a camshaft which cyclically imparts pressurization energy to and recovers pressurization energy from fuel being supplied to the engine. The fuel injection system includes a plurality of unit injectors, a camshaft linkage which simultaneously reciprocates pressurizing plungers of a set of at least two unit injectors and an interconnecting line which allows selective fluid interconnection between fuel pressurization chambers formed within the unit injectors. The interconnection line allows fluid linkage of the volume of fuel which is simultaneously pressurized and depressurized within the interconnected fuel pressurization chambers of a first set of unit injectors.
摘要翻译： 公开了一种用于内燃机的燃料喷射系统，所述内燃机具有多个燃烧室和凸轮轴，所述燃烧室和凸轮轴循环地将加压能量递送给从发动机供应的燃料中并且从其回收加压能量。 燃料喷射系统包括多个单元喷射器，凸轮轴联动装置，其同时往复运动一组至少两个单元喷射器的加压柱塞，以及允许在单元喷射器内形成的燃料加压室之间的选择性流体互连的互连线。 互连线允许在第一组单元喷射器的互连燃料加压室内同时加压和减压的燃料体积的流体连接。
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4.发明授权System for estimating a quantity of parasitic leakage from a fuel injection system 有权用于估计来自燃料喷射系统的寄生泄漏量的系统公开(公告)号：US06990855B2
公开(公告)日：2006-01-31
申请号：US10721662
申请日：2003-11-25
IPC分类号： G01M15/00
CPC分类号： F02D41/2496 , F02D41/3809 , F02D41/40 , F02D2041/224 , F02D2200/0612 , Y02T10/44
摘要： A system for estimating a quantity of parasitic leakage of a fluid from a fluid collection unit includes a pressure sensor and a control circuit. The pressure sensor is coupled to the fluid collection unit and configured to produce a pressure value indicative of the pressure of the fluid collection unit. The control circuit is operable to determine a change in pressure value of the fluid collection unit and estimate the quantity of parasitic leakage based on the change in pressure value. The control circuit may also be operable to determine a bulk modulus value of the fluid and estimate the quantity of parasitic leakage based on the change in pressure value and the bulk modulus value.
摘要翻译： 用于估计来自流体收集单元的流体的寄生泄漏量的系统包括压力传感器和控制电路。 压力传感器耦合到流体收集单元并被配置成产生指示流体收集单元的压力的压力值。 控制电路可操作以确定流体收集单元的压力值的变化，并且基于压力值的变化来估计寄生泄漏量。 控制电路还可操作以基于压力值和体积模量值的变化来确定流体的体积模量值并估计寄生泄漏量。
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5.发明授权公开(公告)号：US06497223B1
公开(公告)日：2002-12-24
申请号：US09564240
申请日：2000-05-04
IPC分类号： F02M3704
CPC分类号： F02D41/3845 , F02D33/006 , F02D41/1402 , F02D2041/141 , F02D2041/1426 , F02D2041/143 , F02D2200/063 , F02D2250/31 , F02M37/0041 , F02M37/0047 , F02M37/08
摘要： A fuel injection pressure control system includes a control strategy operable to measure or estimate actual fuel injection pressure and control the operation of a fuel supply pump to thereby quickly and accurately control fuel injection pressure. The control strategy includes a closed-loop control strategy operable to compensate for instantaneous changes in system non-linearities, including fuel pump non-linearities and the like, and an open-loop control strategy operable to compensate for all system variations as well as system non-linearities, including between-engine variations in system operating parameters and other noise factors including deteriorating conditions, changes in environment and the like. Each strategy includes an adaptive controller operable to update one or more control parameters to thereby guarantee closed-loop stability, provide for fast and accurate system response during transient events, and minimize overshoots and undershoots.
摘要翻译： 燃料喷射压力控制系统包括可操作以测量或估计实际燃料喷射压力并控制燃料供应泵的操作从而快速且准确地控制燃料喷射压力的控制策略。 该控制策略包括闭环控制策略，其可操作以补偿包括燃料泵非线性等在内的系统非线性的瞬时变化，以及可用于补偿所有系统变化以及系统的开环控制策略 非线性，包括系统运行参数的发动机间变化和其他噪声因素，包括恶化条件，环境变化等。 每个策略包括自适应控制器，其可操作以更新一个或多个控制参数，从而保证闭环稳定性，在瞬态事件期间提供快速和准确的系统响应，并且最小化过冲和下冲。
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公开(公告)号：US06637776B2
公开(公告)日：2003-10-28
申请号：US09879091
申请日：2001-06-13
IPC分类号： F16L1302
CPC分类号： F02M55/005 , F02M55/025
摘要： The high-pressure fluid manifold connection assembly includes a one-piece tube collar with an annular relief cavity that surrounds a high-pressure fluid tube. The tube includes a hole that passes through the tube and which is not aligned with an exit hole in an annular relief cavity of the tube collar.
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公开(公告)号：US06550455B2
公开(公告)日：2003-04-22
申请号：US10121864
申请日：2002-04-15
IPC分类号： F02M4100
CPC分类号： F02M63/0225 , F02D41/3809 , F02D2041/224 , F02D2041/225 , F02D2041/3881 , F02D2041/389 , F02M55/00 , F02M57/023 , F02M59/36 , F02M59/366 , F02M63/0007 , F02M63/027
摘要： A fuel injection system is disclosed for an internal combustion engine that has multiple combustion chambers and a camshaft which cyclically imparts pressurization energy to and recovers pressurization energy from fuel being supplied to the engine. The fuel injection system includes a plurality of unit injectors, a camshaft linkage which simultaneously reciprocates pressurizing plungers of a set of at least two unit injectors and an interconnecting line which allows selective fluid interconnection between fuel pressurization chambers formed within the unit injectors. The interconnection line allows fluid linkage of the volume of fuel which is simultaneously pressurized and depressurized within the interconnected fuel pressurization chambers of a first set of unit injectors.
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公开(公告)号：US5899136A
公开(公告)日：1999-05-04
申请号：US769117
申请日：1996-12-18
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。
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公开(公告)号：US06557776B2
公开(公告)日：2003-05-06
申请号：US09907814
申请日：2001-07-19
IPC分类号： F02D106
CPC分类号： F02M47/027 , F02M45/086 , F02M47/025 , F02M2200/21 , F02M2200/46
摘要： A closed needle injector assembly and method are provided which effectively extending injection duration and improving fueling accuracy at part load conditions, providing a low quantity detached pilot injection at all operating conditions and controlling the duration of, and dwell time between, the pilot injection and one or more higher flow rate primary injections independent of fuel injection pressure. The closed needle injector assembly includes first and second needle valve elements, respective control volumes and a single injection control valve to control the movement of the needle valve elements. A sequencing device is mounted on the injector to permit movement of only the inner needle valve element to define a low fuel injection rate event and permit selectively, controlled movement of both the inner and outer needle valve elements to open positions to define a subsequent primary fuel injection event.
摘要翻译： 提供了一种封闭的针式注射器组件和方法，其有效地延长了喷射持续时间，并且在部分负荷条件下提高了加油精度，在所有操作条件下提供了低量的分离引燃喷射，并且控制引燃喷射与一次喷射之间的持续时间和停留时间 或更高的流速初级注射，与燃料喷射压力无关。 闭合针式注射器组件包括第一和第二针阀元件，相应的控制体积和单个注射控制阀，以控制针阀元件的移动。 排序装置安装在注射器上以允许仅移动内针阀元件以限定低燃料喷射速率事件并且允许内针阀和外针阀元件的选择性地受控制的运动到打开位置以限定随后的主要燃料 注射事件。
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公开(公告)号：US5819704A
公开(公告)日：1998-10-13
申请号：US903310
申请日：1997-07-30
IPC分类号： F02M47/00 , F02D41/00 , F02D41/20 , F02D41/38 , F02D41/40 , F02M47/02 , F02M51/00 , F02M55/00 , F02M55/02 , F02M57/02 , F02M59/06 , F02M59/36 , F02M61/14 , F02M63/00 , F02M63/02 , F02M7/00
CPC分类号： F02M51/005 , F02M47/027 , F02M55/005 , F02M57/02 , F02M57/025 , F02M57/026 , F02M59/06 , F02M59/366 , F02M61/14 , F02M63/0225 , F02D41/3809 , F02M2200/21 , F02M2547/003
摘要： The improved needle controlled common rail fuel system of the present invention includes split common rails serving respective sets of unit injectors. Each unit injector includes a mechanically actuated plunger reciprocally mounted 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 a pressure control valve for controlling the amount of fuel pressurized by the plunger and a needle valve control device including an injection control valve 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. In addition, a pressure energy recuperation means is provided which utilizes the pressure of the fuel in each injector's pressure chamber as a result of the pressure energy stored in the fuel to assist in retraction of the injector plunger during each pumping event.
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单元喷射器的分开的共轨。 每个单元喷射器包括机械致动的柱塞，其往复安装以在柱塞的前进行程期间循环地创建共轨中的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。 燃料喷射器包括用于控制由柱塞加压的燃料量的压力控制阀和包括喷射控制阀的针阀控制装置，该喷射控制阀用于通过控制排出的燃料流从而在泵送事件期间产生喷射事件，从而控制 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。 此外，提供了一种压力能量回收装置，其利用存储在燃料中的压力能量，在每个泵送事件期间有助于使喷射器柱塞缩回，从而利用每个喷射器的压力室中的燃料的压力。
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