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    System and method for estimating NOx produced by an internal combustion engine
    12.
    发明授权
    System and method for estimating NOx produced by an internal combustion engine 有权
    用于估计由内燃机产生的NOx的系统和方法

    公开(公告)号：US07831378B2

    公开(公告)日：2010-11-09

    申请号：US11928195

    申请日：2007-10-30

    申请人： J. Stephen Wills

    发明人： J. Stephen Wills

    IPC分类号： G06F19/00 ,  F02D41/00

    CPC分类号： F02D41/14 ,  F01N2900/14 ,  F02D41/1462 ,  F02D2041/0075 ,  F02D2200/0414 ,  F02D2200/0602 ,  F02D2200/0614

    摘要： A system and method are provided for estimating NOx produced by an internal combustion engine. The flow rate of fuel supplied to the engine and a plurality of engine operating parameters are monitored. NOx produced by the engine is estimated based on a product of the flow rate of fuel and a function of the plurality of engine operating parameters. The NOx estimate is stored in memory.

    摘要翻译： 提供了一种用于估计由内燃机产生的NOx的系统和方法。 监测供给到发动机的燃料的流量和多个发动机运转参数。 基于燃料流量与多个发动机运转参数的函数的乘积来推定发动机产生的NOx。 NOx估计存储在存储器中。

    Control system for internal combustion engine
    13.
    发明授权
    Control system for internal combustion engine 有权
    内燃机控制系统

    公开(公告)号：US07792631B2

    公开(公告)日：2010-09-07

    申请号：US12121848

    申请日：2008-05-16

    申请人： Jörg Böttcher ,  Michael Fischer ,  Yuji Yasui

    发明人： Jörg Böttcher ,  Michael Fischer ,  Yuji Yasui

    IPC分类号： F02D41/30

    CPC分类号： F02D41/1405 ,  F02B29/0406 ,  F02D41/0072 ,  F02D41/1462 ,  F02D41/22 ,  F02D41/3035 ,  F02D2041/0015 ,  F02D2041/0075 ,  F02M26/05 ,  F02M26/47 ,  F02M26/48 ,  F02M26/53 ,  F02M26/54 ,  Y02T10/47

    摘要： A control system for an internal combustion engine having an exhaust gas recirculation device for recirculating a part of exhaust gases to an intake system of the engine is disclosed. An estimated exhaust gas recirculation amount is calculated using a neural network to which at least one engine operating parameter indicative of an operating condition of the engine is input. The neural network outputs an estimated value of an amount of exhaust gases recirculated by the exhaust gas recirculation device. At least one engine control parameter for controlling the engine is calculated based on the estimated exhaust gas recirculation amount.

    摘要翻译： 公开了一种具有排气再循环装置的内燃机的控制系统，用于将一部分废气再循环到发动机的进气系统中。 使用神经网络来计算估计的废气再循环量，至少一个指示发动机的运行状态的发动机运转参数被输入到该神经网络中。 神经网络输出由废气再循环装置再循环的废气量的估计值。 基于估计的废气再循环量计算用于控制发动机的至少一个发动机控制参数。

    Engine control system and control method thereof
    14.
    发明授权
    Engine control system and control method thereof 有权
    发动机控制系统及其控制方法

    公开(公告)号：US07715975B2

    公开(公告)日：2010-05-11

    申请号：US12277888

    申请日：2008-11-25

    申请人： Shiro Yamaoka ,  Yoshihiro Sukegawa ,  Noboru Tokuyasu ,  Hiroaki Hoshika ,  Kaori Kashio

    发明人： Shiro Yamaoka ,  Yoshihiro Sukegawa ,  Noboru Tokuyasu ,  Hiroaki Hoshika ,  Kaori Kashio

    IPC分类号： B60T7/12 ,  F02M7/00

    CPC分类号： F02D41/0002 ,  F02D41/0072 ,  F02D41/18 ,  F02D41/222 ,  F02D41/3035 ,  F02D41/3076 ,  F02D2041/0075 ,  F02D2200/0406 ,  F02D2400/08 ,  F02M26/05 ,  F02M26/06 ,  F02M26/28 ,  F02M26/47 ,  Y02T10/42 ,  Y02T10/47

    摘要： An engine that re-circulates its exhaust gas suffers decreased accuracy in estimating an EGR rate real-time especially while the operating state of the engine is in a transitional state, which often results in torque fluctuations and deteriorated exhaust gas.A sensor for directly detecting an EGR flow rate is disposed in an EGR path. An EGR rate and in-cylinder oxygen concentration are calculated from the output value of that sensor. In addition, when this EGR rate calculation method is used, the calculation is properly switched between a steady operation state characterized by a low load and small rotational fluctuations and a transitional operating state including the acceleration and deceleration. This makes it possible to correctly estimate the EGR rate and the in-cylinder oxygen concentration under a wide range of engine operation conditions, and thereby to avoid the fluctuation of torque and the deterioration of exhaust gas.

    摘要翻译： 特别是在发动机的运转状态处于过渡状态时，再次循环排气的发动机在实际EGR估计中的精度降低，这通常导致扭矩波动和废气劣化。 用于直接检测EGR流量的传感器设置在EGR通路中。 从该传感器的输出值计算EGR率和缸内氧浓度。 此外，当使用该EGR率计算方法时，可以在以低负载和小的旋转波动为特征的稳定运行状态和包括加速和减速的过渡运行状态之间适当地切换运算。 这使得可以在较宽的发动机运转条件下正确地估计EGR率和缸内氧气浓度，从而避免扭矩的波动和废气的劣化。

    Control Apparatus of EGR Control Valve
    15.
    发明申请
    Control Apparatus of EGR Control Valve 有权
    EGR控制阀控制装置

    公开(公告)号：US20090223495A1

    公开(公告)日：2009-09-10

    申请号：US11873601

    申请日：2007-10-17

    申请人： Eiichiro OHATA ,  Shiro Yamaoka ,  Yoshihiro Sukegawa ,  Hiroaki Hoshika ,  Kaori Kashio

    发明人： Eiichiro OHATA ,  Shiro Yamaoka ,  Yoshihiro Sukegawa ,  Hiroaki Hoshika ,  Kaori Kashio

    IPC分类号： F02M25/07 ,  F02B47/08

    CPC分类号： F02D41/0055 ,  F02D41/0072 ,  F02D41/187 ,  F02D41/22 ,  F02D2041/0067 ,  F02D2041/0075 ,  F02D2200/0414 ,  F02M26/25 ,  F02M26/43 ,  F02M26/44 ,  F02M26/47 ,  F02M26/48 ,  F02M26/49 ,  F02M2026/003 ,  Y02T10/47

    摘要： A conventional technique performs valve close control of an EGR valve after an EGR-gas back flow is detected. Therefore, the conventional technique has a subject that, if an EGR-gas flow direction changes from forward flow to back flow, a back flow condition will last not only for a response delay time of a detector but also for the judgment time by calculation processing and the actuation time of the EGR control valve. There is provided a control apparatus of an EGR control valve, comprising: an EGR control valve which is provided in an exhaust gas recirculation passage to circulate exhaust gas of an combustion engine from an exhaust gas passage to an intake air passage; measurement means for measuring a flow rate of EGR gas flowing in the exhaust gas recirculation passage; and control means for receiving an input from the measurement means and closing the EGR control valve if the EGR-gas flow rate is smaller than a predetermined threshold value when the EGR gas is flowing from the exhaust side to the intake side of the internal combustion engine.

    摘要翻译： 在检测到EGR气体回流之后，常规技术对EGR阀进行阀关闭控制。 因此，现有技术的一个主题是，如果EGR气体流动方向从正向流向后向流动，逆流条件不仅对于检测器的响应延迟时间而且对于通过计算处理的判断时间也将持续 以及EGR控制阀的启动时间。 提供了一种EGR控制阀的控制装置，包括：EGR控制阀，其设置在废气再循环通道中，以使内燃机的废气从排气通道循环到进气通道; 用于测量在废气再循环通道中流动的EGR气体的流量的测量装置; 以及控制装置，用于在EGR气体从排气侧流向内燃机的进气侧时，如果EGR气体流量小于预定阈值，则从测量装置接收输入并关闭EGR控制阀 。

    METHOD TO DIAGNOSE AN EXHAUST GAS SENSOR DISPOSED IN AN EXHAUST GAS REGION OF AN INTERNAL COMBUSTION ENGINE AND DEVICE TO IMPLEMENT THE METHOD
    16.
    发明申请
    METHOD TO DIAGNOSE AN EXHAUST GAS SENSOR DISPOSED IN AN EXHAUST GAS REGION OF AN INTERNAL COMBUSTION ENGINE AND DEVICE TO IMPLEMENT THE METHOD 有权
    用于诊断在内燃机的排气区域中排出的排气传感器的方法和实现该方法的装置

    公开(公告)号：US20090044612A1

    公开(公告)日：2009-02-19

    申请号：US12028545

    申请日：2008-02-08

    申请人： Jochen Schoenthaler ,  Stefan Wickert

    发明人： Jochen Schoenthaler ,  Stefan Wickert

    IPC分类号： F01N11/00

    CPC分类号： F02D41/222 ,  F01N3/2066 ,  F01N2560/026 ,  F02D41/146 ,  F02D41/1463 ,  F02D41/187 ,  F02D2041/0075 ,  F02D2200/1012 ,  Y02T10/40

    摘要： A method to diagnose an exhaust gas sensor disposed in the exhaust gas region of an internal combustion engine, wherein provision is made for a comparison of a measurement for at least one exhaust gas component with a measurement of the exhaust gas component, which is ascertained on the basis of an exhaust gas sensor signal, and a device to implement the method are proposed. The diagnosis is only implemented if a change in at least one operating parameter of the internal combustion engine and/or at least one parameter of the exhaust gas is detected during the running operation of the internal combustion engine. Provision is made in the diagnosis for an averaging of the measurement for at least the one exhaust gas component as well as of the measurement for the exhaust gas component, which is provided by the exhaust gas sensor. Provision is additionally made for a subsequent comparison of the two averages and for an error signal to be provided if the difference of the two averages exceeds a difference threshold value. The procedural approach allows for the diagnosis to occur without a diagnostic intervention into the operation of the internal combustion engine and without an intervention into an open-loop control, which if need be is present, for the metering of a reagent substance, which is introduced into the exhaust gas region of the internal combustion engine to convert at least one exhaust gas component.

    摘要翻译： 一种用于诊断设置在内燃机的排气区域中的废气传感器的方法，其中提供用于比较至少一种废气组分的测量和排气组分的测量，所述测量被确定在 提出了排气传感器信号的基础，以及实现该方法的装置。 只有在内燃机的运行操作期间检测到内燃机的至少一个操作参数和/或废气的至少一个参数的变化时，才实现诊断。 在对排气传感器提供的至少一个废气成分的测量以及排气组分的测量的平均化进行诊断时进行了规定。 另外为两个平均值的后续比较以及两个平均值的差值超过差值阈值而提供的误差信号另外设定。 程序方法允许在没有对内燃机的操作的诊断干预的情况下进行诊断，并且不介入开环控制（如果需要的话），用于测量引入的试剂物质 进入内燃机的废气区域以转化至少一个排气组分。

    Intake air temperature rationality diagnostic
    18.
    发明申请
    Intake air temperature rationality diagnostic 有权
    进气温度合理性诊断

    公开(公告)号：US20080319600A1

    公开(公告)日：2008-12-25

    申请号：US11821591

    申请日：2007-06-22

    申请人： Kurt D. McLain ,  Wenbo Wang

    发明人： Kurt D. McLain ,  Wenbo Wang

    IPC分类号： G06F19/00

    CPC分类号： F02D41/222 ,  F02D41/187 ,  F02D2041/0075 ,  F02D2200/0402 ,  F02D2200/0408 ,  F02D2200/0414 ,  G01K7/42 ,  G01K15/00 ,  G01K15/007 ,  G01M15/09 ,  Y02T10/40

    摘要： A method of determining whether a fault condition of an intake air temperature (IAT) sensor of an engine is present includes estimating a first manifold absolute pressure (MAP) based on a previously estimated first MAP and an estimated first mass air flow (MAF) as a function of the previously estimated first MAP and estimating a second MAP based on a previously estimated second MAP and a currently measured MAF. An IAT difference is determined based on the first MAP and the second MAP. Whether the fault condition of the IAT sensor is present is determined based on the IAT difference.

    摘要翻译： 确定发动机的进气温度（IAT）传感器的故障状况是否存在的方法包括基于先前估计的第一MAP和估计的第一质量空气流（MAF）估计第一歧管绝对压力（MAP）作为 预先估计的第一MAP的功能，并且基于先前估计的第二MAP和当前测量的MAF来估计第二MAP。 基于第一MAP和第二MAP确定IAT差异。 基于IAT差异确定​​IAT传感器的故障状态是否存在。

    Method for operating an internal combustion engine having exhaust gas recirculation
    19.
    发明申请
    Method for operating an internal combustion engine having exhaust gas recirculation 有权
    用于操作具有废气再循环的内燃机的方法

    公开(公告)号：US20080276914A1

    公开(公告)日：2008-11-13

    申请号：US12070998

    申请日：2008-02-22

    申请人： Thomas Bleile ,  Horst Mueller

    发明人： Thomas Bleile ,  Horst Mueller

    IPC分类号： F02B47/08

    CPC分类号： F02D41/0072 ,  F02D41/0005 ,  F02D41/123 ,  F02D41/1448 ,  F02D41/222 ,  F02D41/2438 ,  F02D41/2441 ,  F02D41/2464 ,  F02D2041/0075 ,  F02D2200/0402 ,  F02D2200/0406 ,  F02D2200/0414 ,  Y02T10/47

    摘要： In a method for operating an internal combustion engine having exhaust gas recirculation, air is supplied to at least one combustion chamber via an intake manifold at least partially closable with the aid of a final control element, and a part of the exhaust gases flowing into an exhaust pipe is conducted via an EGR channel, which is at least partially closable with the aid of an EGR valve unit, into an area of the intake manifold, which lies between the final control element and the combustion chamber. A first variable, which characterizes the mass flow of the gas conducted through the EGR channel, is ascertained from a set of state variables of the internal combustion engine, which apply for an operating state in which the engine is in overrun operation and the final control element is essentially closed.

    摘要翻译： 在用于操作具有废气再循环的内燃机的方法中，空气通过进气歧管至少一个燃烧室供应，所述进气歧管至少部分地可通过最终控制元件关闭，并且一部分废气流入 排气管通过位于最终控制元件和燃烧室之间的进气歧管的区域中的EGR通道，EGR通道至少部分地可由EGR阀单元关闭。 第一变量，其特征在于通过EGR通道传导的气体的质量流量，由内燃机的一组状态变量确定，该内燃机适用于发动机处于超速运行状态的运行状态，最终控制 元素基本上是封闭的。