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1.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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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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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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4.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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5.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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6.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
CPC分类号： F02D41/009 , F02D35/023 , F02D41/3809 , F02D2200/0602
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。
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7.发明授权公开(公告)号：US06557530B1
公开(公告)日：2003-05-06
申请号：US09565010
申请日：2000-05-04
IPC分类号： F02M5100
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 fuel control system for an internal combustion engine including injected fuel quantity estimation includes a fuel pump responsive to a fuel pump command to supply fuel to a fuel collection unit. A pressure sensor is provided for producing a pressure signal indicative of the pressure of fuel within the collection unit throughout a fuel injection event, and an engine position sensor is provided for producing an engine position signal indicative of a crank angle of the engine relative to a reference crank angle. A control circuit includes means responsive to the pressure signal and a desired fueling value for producing an initial fueling command, and further includes a fuel quantity estimation block responsive to the pressure signal, the engine position signal and a final fueling command to produce a fuel quantity estimation value. The final fueling command is computed by the control circuit as a function of the initial fueling command and the fuel quantity adjustment value to which the injector is responsive to supply fuel to the combustion chamber.
摘要翻译： 一种用于包括喷射燃料量估计的内燃机的燃料控制系统包括响应于燃料泵命令向燃料收集单元供应燃料的燃料泵。 提供压力传感器，用于在整个燃料喷射事件期间产生指示收集单元内的燃料压力的压力信号，并且提供发动机位置传感器，用于产生指示发动机相对于发动机的曲柄角的发动机位置信号 参考曲轴角度。 控制电路包括响应于压力信号的装置和用于产生初始加油命令的期望的加油值，并且还包括响应于压力信号，发动机位置信号和最终加油命令以产生燃料量的燃料量估计块 估计值。 最终加油命令由控制电路根据初始加油指令和喷油器响应于向燃烧室供应燃料的燃料量调节值计算。
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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：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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10.发明授权
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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