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公开(公告)号：US06484696B2
公开(公告)日：2002-11-26
申请号：US09825407
申请日：2001-04-03
申请人： Travis E. Barnes , Michael S. Lukich , David Milam , George M. Matta , Douglas E. Handly , Denis El Darazi , Meixing Lu , Nolan W. Wartick
发明人： Travis E. Barnes , Michael S. Lukich , David Milam , George M. Matta , Douglas E. Handly , Denis El Darazi , Meixing Lu , Nolan W. Wartick
IPC分类号： F02M3704
CPC分类号： F02D41/3845 , F02D41/1401 , F02D2041/1409 , F02D2041/141 , F02D2041/1416 , F02D2041/1422 , F02D2200/0604 , F02M63/0225
摘要： A method of controlling a hydraulic system is preferably applied to common rail fuel injection systems. The problem in these systems is to control pressure in the common rail while at the same time maintaining the fluid supply to the rail in a way that precisely meets the dynamically changing consumption demands on the hydraulic system. In order to control the hydraulic system, the present invention contemplates the combination of a standard feedback controller with observer models of the various hardware items that make up the hydraulic system. Using this strategy, the system can generally be thought of as controlling fluid supply in an open loop type fashion based upon the consumption rates estimated by the various observer models, and utilizing a conventional feedback controller to make the slight pump adjustments needed to control pressure and to correct for any errors between the actual hardware performance and that predicted by the observer models.
摘要翻译： 控制液压系统的方法优选地应用于共轨燃料喷射系统。 这些系统中的问题是控制共轨中的压力，同时保持对轨道的流体供应，从而精确地满足液压系统动态变化的消耗需求。 为了控制液压系统，本发明考虑了标准反馈控制器与构成液压系统的各种硬件项目的观察者模型的组合。 使用这种策略，该系统通常可以被认为是基于由各种观察者模型所估计的消耗速率以开环类型方式控制流体供应，并且利用常规反馈控制器来进行需要的轻微的泵调节以控制压力和 以纠正实际硬件性能与观察者模型预测的任何错误。
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公开(公告)号：US6152107A
公开(公告)日：2000-11-28
申请号：US138887
申请日：1998-08-24
CPC分类号： F02D31/007 , F02D41/06 , F02D41/2422 , F02D2250/18 , F02D2250/38 , F02D41/3809
摘要： The present invention is an apparatus for controlling the amount of fuel delivered to an engine during operation at cold and warm temperatures using different sets of fuel rate maps designed to compensate fuel quantity signals to optimize engine performance. A switching mechanism based on engine coolant temperature is used to select which set of maps to use. When the engine coolant temperature is below a threshold level, a cold torque map provides a signal representing the duration limit of time that fuel is to be injected. A compensating factor derived from a cold temperature smoke map is used to adjust the cold torque map signal to limit the fuel amount to prevent excess smoke. When the engine coolant temperature is above the threshold, a fuel duration limit signal from a standard temperature torque map is compared to a fuel duration limit signal from a standard temperature smoke map, and the minimum between the two signals is selected for output to the fuel injectors.
摘要翻译： 本发明是一种用于在冷和暖温度下操作期间输送到发动机的燃料量的装置，其使用不同组的燃料速率图，其设计用于补偿燃料量信号以优化发动机性能。 使用基于发动机冷却剂温度的切换机构来选择要使用的哪组地图。 当发动机冷却剂温度低于阈值水平时，冷扭矩图提供表示要喷射燃料的时间的持续时间限度的信号。 使用来自冷温度烟图的补偿因子来调节冷扭矩图信号以限制燃料量以防止过多的烟雾。 当发动机冷却剂温度高于阈值时，将来自标准温度转矩图的燃料持续时间限制信号与来自标准温度烟图的燃料持续时间限制信号进行比较，并且选择两个信号之间的最小值以输出到燃料 注射器。
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公开(公告)号：US06272859B1
公开(公告)日：2001-08-14
申请号：US09165756
申请日：1998-10-02
IPC分类号： F02B3712
CPC分类号： F02B37/24 , F02D41/0007 , F02D2041/1409 , Y02T10/144
摘要： The present invention is an apparatus for controlling a variable geometry turbocharger (VGT) in closed loop and open loop modes, and a switching mechanism for determining whether open loop or closed loop control laws should be used. In the closed loop mode, a correction factor, obtained from a pressure correction map based on engine speed and atmospheric pressure, is subtracted from the desired boost pressure to prevent overspeed of the turbocharger at lower atmospheric pressures. The actual boost pressure is then compared to the desired boost pressure after correction to obtain a boost pressure error signal. The boost pressure error signal is used as an input to a proportional integral differential control law that responsively produces a desired VGT vane position. A minimum limit on the desired VGT vane position is based on engine speed and fuel quantity, whereas a maximum allowable vane position may be a predetermined constant or function. A linearization map is used to obtain a VGT current signal that is transmitted to an actuator for moving the vane position.
摘要翻译： 本发明是用于控制闭环和开环模式中的可变几何涡轮增压器（VGT）的装置，以及用于确定是否应当使用开环或闭环控制定律的切换机构。 在闭环模式中，从期望的增压压力中减去从基于发动机转速和大气压力的压力校正图获得的校正系数，以防止涡轮增压器在较低的大气压下超速。 然后将实际增压压力与校正后的期望增压压力进行比较，以获得增压压力误差信号。 增压压力误差信号用作响应地产生期望的VGT叶片位置的比例积分微分控制定律的输入。 所需VGT叶片位置的最小限制是基于发动机速度和燃料量，而最大允许叶片位置可以是预定的常数或功能。 使用线性化图来获得传输到用于移动叶片位置的致动器的VGT电流信号。
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4.发明授权
公开(公告)号：US6112729A
公开(公告)日：2000-09-05
申请号：US165774
申请日：1998-10-02
CPC分类号： F02D41/0052 , F02D41/18 , Y02T10/47
摘要： The present invention is an apparatus for controlling exhaust gas recirculation in an internal combustion engine. The apparatus includes an exhaust gas recirculation controller that uses sensed engine operating parameters and the engine operational mode to determine whether to enable or disable the exhaust gas recirculation valve. When the valve is enabled, a closed-loop controller determines the desired amount of exhaust gas to recirculate and the corresponding position of the exhaust gas recirculation valve to introduce the desired amount of exhaust gas into the engine's air intake manifold. The desired valve position is converted to a current signal which is transmitted to an actuator to move the valve. When the valve is disabled, the current signal is set to a value to close the valve to prevent exhaust gas from being circulated in the engine's air intake manifold.
摘要翻译： 本发明是一种用于控制内燃机中废气再循环的装置。 该设备包括废气再循环控制器，其使用感测的发动机操作参数和发动机操作模式来确定是否启用排气再循环阀。 当阀门启用时，闭环控制器确定期望的再循环排气量和废气再循环阀的相应位置，以将期望量的废气引入发动机的进气歧管。 期望的阀位置被转换成电流信号，该电流信号被传递到致动器以移动阀。 当阀被禁用时，电流信号被设置为一个值以关闭阀门，以防止废气在发动机的进气歧管中循环。
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公开(公告)号：US6092504A
公开(公告)日：2000-07-25
申请号：US129064
申请日：1998-08-04
CPC分类号： F02D41/2422 , F02D31/008
摘要： The present invention is an apparatus for controlling the fuel rate to an engine using the throttle position, and for controlling the speed of the engine using decision logic to choose the best alternative among candidate fuel levels. A minimum speed governor determines a minimum fuel level at a predetermined low idle engine speed, a maximum speed governor determines a maximum fuel level at a predetermined high idle engine speed, and at least one fuel rate map is used to determine fuel level based on various engine operating parameters. Each governor outputs a fuel quantity signal based on the difference between the corresponding desired engine speed and the actual engine speed. The fuel rate map may be a multi-dimensional data table that provides fuel quantity signals to optimize engine performance based on the throttle position, engine speed, boost pressure, and other engine operating states. The fuel quantity signals from the lookup tables and the maximum speed governor are compared and the minimum value is chosen. The minimum value is then compared to the fuel quantity signal from the minimum speed governor, and the maximum value between these signals is provided as the output signal from the speed governor portion of the engine's electronic control module.
摘要翻译： 本发明是一种用于使用节气门位置来控制对发动机的燃料利用率的装置，并且用于使用决策逻辑来控制发动机的速度，以选择候选燃料水平中的最佳替代方案。 最小调速器在预定的低怠速发动机转速下确定最小燃料液位，最大速度调节器以预定的高怠速发动机转速确定最大燃料液位，并且使用至少一个燃油比率图来基于各种 发动机工作参数。 每个调速器基于相应的所需发动机转速和实际发动机转速之差来输出燃料量信号。 燃料速率图可以是多维数据表，其提供基于节气门位置，发动机速度，增压压力和其它发动机运行状态来优化发动机性能的燃料量信号。 比较来自查找表和最大调速器的燃料量信号，并选择最小值。 然后将最小值与来自最小调速器的燃料量信号进行比较，并且将这些信号之间的最大值作为来自发动机的电子控制模块的调速器部分的输出信号。
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6.发明授权Utilization of a rail pressure predictor model in controlling a common rail fuel injection system 有权利用轨道压力预测器模型控制共轨燃油喷射系统公开(公告)号：US06694953B2
公开(公告)日：2004-02-24
申请号：US10038952
申请日：2002-01-02
IPC分类号： F02M3704
CPC分类号： F02D41/3836 , F02B3/06 , F02D41/2422 , F02D41/408 , F02D2041/1433 , F02D2041/1437 , F02D2041/389 , F02D2200/0604 , F02D2250/04 , F02D2250/31
摘要： Although injection timing accuracy is sensitive to rail pressure, injection quantity of the fuel injection event is strongly a function of rail pressure. Thus, delivery accuracy of each injection event depends strongly upon the accuracy of a rail pressure estimate used in determining the injection control signal characteristics. These injection control signal characteristics include a calculated delay between a start of control current and start of injection, as well as the duration of the control signal. The present invention takes a rail pressure measurement substantially before an injection event, and then utilizes a rail pressure predictor model to predict what the rail pressure will be at each injection event in a succeeding injection sequence. This estimated rail pressure is then used as the means for determining the fuel injection control signal characteristics for that succeeding injection event.
摘要翻译： 虽然喷射定时精度对轨道压力敏感，但燃料喷射事件的喷射量强烈地是轨道压力的函数。 因此，每个喷射事件的输送精度主要取决于在确定喷射控制信号特性时使用的轨道压力估计的精度。 这些喷射控制信号特性包括控制电流开始和喷射开始之间的计算延迟以及控制信号的持续时间。 本发明基本上在喷射事件之前进行轨道压力测量，然后利用轨道压力预测器模型来预测在随后的喷射序列中在每次喷射事件时轨道压力将是什么。 然后将该估计的轨道压力用作确定后续喷射事件的燃料喷射控制信号特性的装置。
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7.发明授权Electronic control and method for consistently controlling the amount of fuel injected by a hydraulically activated, electronically controlled injector fuel system to an engine 失效用于一致地控制由液压激活的电子控制的喷射器燃料系统喷射到发动机的燃料量的电子控制和方法
公开(公告)号：US6082331A
公开(公告)日：2000-07-04
申请号：US994238
申请日：1997-12-19
CPC分类号： F02D41/3827 , F02D41/402 , Y02T10/44
摘要： An apparatus and method for determining the current waveform of a fuel injection signal so as to consistently control the amount of fuel injected by an electronically controlled hydraulic actuator unit injector fuel system to an engine is disclosed. The apparatus and method varies the waveform of a fuel injection signal using equations or look-up maps and based on sensed operating parameters, which preferably include a desired speed of the engine or desired fuel quantity to be injected during an injection event, actuating fluid pressure and engine speed.
摘要翻译： 公开了一种用于确定燃料喷射信号的电流波形以便一致地控制由电子控制的液压致动器单元喷射器燃料系统喷射到发动机的燃料量的装置和方法。 该装置和方法使用等式或查找图并且基于感测的操作参数改变燃料喷射信号的波形，其优选地包括发动机的期望速度或在喷射事件期间要喷射的期望燃料量，致动流体压力 和发动机转速。
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8.发明授权
公开(公告)号：US6026780A
公开(公告)日：2000-02-22
申请号：US993591
申请日：1997-12-18
CPC分类号： F02D41/3827 , F02D41/402 , Y02T10/44
摘要： A method for controlling transfer from use of a first injection waveform type to use of a second injection waveform type in a hydraulically-actuated electronically-controlled fuel injection system of an engine includes sensing an engine speed and an engine load when the first injection waveform type is selected and storing the sensed engine speed and the sensed engine load. An actual engine speed is thereafter compared with the stored engine speed and an actual engine load is thereafter compared with the stored engine load. Transfer from use of the first injection waveform type to use of the second injection waveform type is prevented unless at least (i) a difference between the actual engine load and the stored engine load exceeds a predetermined load amount, or (ii) a difference between the actual engine speed and the stored engine speed exceeds a predetermined speed amount.
摘要翻译： 用于在发动机的液压致动电子控制燃料喷射系统中控制从使用第一喷射波形类型到使用第二喷射波形类型的转移的方法包括当第一喷射波形类型 并且存储感测的发动机速度和感测的发动机负载。 此后，将实际的发动机转速与存储的发动机转速进行比较，然后将实际发动机负荷与存储的发动机负荷进行比较。 除非至少（i）实际发动机负荷与存储的发动机负荷之间的差异超过预定的负载量，否则，可以防止从使用第一喷射波形转换到使用第二喷射波形类型，或者（ii） 实际发动机速度和存储的发动机转速超过预定速度量。
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公开(公告)号：US5214916A
公开(公告)日：1993-06-01
申请号：US819682
申请日：1992-01-13
申请人： Michael S. Lukich
发明人： Michael S. Lukich
IPC分类号： B60K17/10 , B60W10/103 , E02F9/22 , F16H61/46 , F16H61/475 , G05D16/20
CPC分类号： B60W10/103 , B60W10/06 , E02F9/2235 , E02F9/2246 , E02F9/2292 , E02F9/2296 , F16H61/46 , F16H61/475 , B60Y2200/41 , Y02T10/76
摘要： An apparatus controls an electrohydraulic system of a work vehicle. The work vehicle has a engine, at least one fluid circuit having a variable displacement pump driven by the engine, and a plurality of control valves for controllably passing fluid from the variable displacement pump to a plurality of respective work elements. A device produces a signal indicative of a desired velocity of a respective work element. A device senses a load on a work element and producing a signal representative of the actual load in response to the sensed load. A control device receives the desired velocity signal and load signals, and responsively calculates a desired power level for the electrohydraulic system. Responsively, the control device produces an engine speed command signal indicative of an optimum engine speed in response to the desired power level.
摘要翻译： 一种装置控制作业车辆的电动液压系统。 工作车辆具有发动机，至少一个具有由发动机驱动的可变排量泵的流体回路和用于将流体从可变排量泵可控地传递到多个相应工作元件的多个控制阀。 设备产生指示相应工作元件的期望速度的信号。 设备感测工件上的负载，并响应感测到的负载产生代表实际负载的信号。 控制装置接收所需的速度信号和负载信号，并且响应地计算电液系统的期望功率水平。 响应地，控制装置响应于期望的功率水平产生指示最佳发动机转速的发动机转速指令信号。
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公开(公告)号：US08061123B2
公开(公告)日：2011-11-22
申请号：US11978618
申请日：2007-10-30
IPC分类号： F01N3/00
CPC分类号： F01N3/208 , F01N2560/06 , F01N2560/07 , F01N2570/14 , F01N2610/02 , F01N2610/146 , F01N2900/1812 , Y02T10/24
摘要： A method for treating a flow of exhaust from an engine includes injecting reductant into the flow of exhaust with an injector disposed upstream from a catalytic device. The injector and the catalytic device are disposed in an exhaust system for the engine. The method also includes passing the flow of exhaust through the catalytic device, sensing a characteristic of at least one of the exhaust system and the engine, monitoring the sensed characteristic to recognize a condition associated with a formation of a decomposition material formed from the reductant, and controlling an operation of at least one of the engine and the exhaust system to increase a temperature in the exhaust system in response to the recognized condition.
摘要翻译： 用于处理来自发动机的排气流的方法包括将催化剂注入设置在催化装置上游的喷射器中将还原剂注入到排气流中。 喷射器和催化装置设置在用于发动机的排气系统中。 该方法还包括使排气流通过催化装置，感测排气系统和发动机中的至少一个的特性，监测感测到的特性以识别与由还原剂形成的分解材料的形成有关的状况， 以及控制所述发动机和排气系统中的至少一个的操作，以响应于所识别的条件来增加所述排气系统中的温度。
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