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    Method for monitoring combustion stability of an internal combustion engine
    1.
    发明公开
    Method for monitoring combustion stability of an internal combustion engine 有权
    Verfahren zurÜberwachungderVerbrennungsstabilitätvon Brennkraftmaschinen

    公开(公告)号：EP1914411A1

    公开(公告)日：2008-04-23

    申请号：EP08100260.2

    申请日：2005-07-14

    申请人： Ford Global Technologies, LLC

    发明人： Moraal, Paul Eduard ,  Vantine, Katie ,  Chevalier, Alain ,  Christen, Urs

    IPC分类号： F02D41/14

    CPC分类号： F02D41/1497 ,  F02D35/023 ,  F02D41/1498 ,  F02D2200/1012 ,  Y02T10/128

    摘要： The present invention relates to a method for monitoring combustion stability of an internal combustion engine equipped with a crankshaft, an intake manifold and at least one cylinder.
    It is the object of the present invention to provide a method of the above mentioned kind which overcomes the problems known from the state of the art, in particular a method which is suitable for online calculation.
    With respect to the object a method is provided comprising the following steps:
    ■ determining the absolute deviation e of indicated mean effective pressure p ind or indicated torque T ind with respect to their actual set point, i.e., with respect to actual indicated mean effective pressure set point p ind,setpt or actual indicated torque set point T ind, setpt , namely Δp ind or ΔT ind , or alternatively determining the relative change Δ e in said deviation between two consecutive combustion cycles k, k+1 of said at least one cylinder, i.e., determining (Δp ind,k+1 - Δp ind,k ) or (ΔT ind,k+1 - ΔT ind,k ) or determining the relative change Δe in angular acceleration ω' of the crankshaft between two consecutive combustion cycles k, k+1, i.e., (Δω' k + 1 - Δω' k ), and
    ■ comparing said determinated deviation e or said change Δ e with a predetermined engine operating point dependent threshold e threshold or Δe threshold in order to decide if the combustion is stable or not by means of the following inequalities: e > e threshold or Δe > Δe threshold means combustion is not stable , e ≤ e threshold or Δe ≤ Δe threshold means combustion is stable .
    The method is preferably applied to homogeneous charge combustion ignition engines (HCCI).

    摘要翻译： 本发明涉及一种用于监测配备有曲轴，进气歧管和至少一个气缸的内燃机的燃烧稳定性的方法。 本发明的目的是提供一种克服现有技术中已知的问题，特别是适用于在线计算的方法的上述类型的方法。 关于该目的，提供了一种方法，其包括以下步骤： - 确定所指示的平均有效压力p ind或指示转矩T ind相对于其实际设定点的绝对偏差e，即相对于实际指示的平均有效压力 设定点p ind，设定值或实际指示转矩设定点T ind，setpt，即“p ind”或“T ind”，或者替代地确定所述at的两个连续燃烧循环k，k + 1之间的所述偏差中的相对变化e 至少一个气缸，即确定（“p ind，k + 1”，p ind，k）或（“T ind，k + 1 - ”T ind，k）或确定角加速度É' 在两个连续的燃烧循环k，k + 1之间，即（“É”k + 1-é'k）的曲轴的曲率，以及 - 将所述确定的偏差e或所述变化e与预定的发动机工作点相关阈值 e阈值或“e阈值以便决定燃烧 通过以下不等式是稳定的：e> e阈值或“e”e阈值意味着燃烧不稳定，e阈值或“e‰”e阈值意味着燃烧稳定。 该方法优选地应用于均质充气燃烧点火发动机（HCCI）。

    On-Cylinder Combustion Sensor
    3.
    发明公开
    On-Cylinder Combustion Sensor 审中-公开
    Verbrennungssensor

    公开(公告)号：EP1988378A1

    公开(公告)日：2008-11-05

    申请号：EP07107351.4

    申请日：2007-05-02

    申请人： Ford Global Technologies, LLC

    发明人： Vantine, Katie ,  Chevalier, Alain ,  Roettger, Daniel ,  Tumelaire, Charles ,  Schmitt, Jürgen

    IPC分类号： G01L23/22

    CPC分类号： G01L23/221

    摘要： The invention relates to an internal combustion engine having at least one engine component (2) mounted on an engine block and at least one combustion chamber, whereby a knock sensor (3), which generates a signal as a result of the combustion process in at least one of the combustion chambers, is mounted to the engine block.
    It is an object of the invention to provide an internal combustion engine comprising of a knock sensor to affect an improved signal-to-noise ratio and reduced cross-coupling between the cylinders.
    Inventional the knock sensor (3) is mounted directly over the combustion chamber such that a signal resulting from the combustion process transmitted through the engine block and via the knock sensor (3) is generated, so that the combustion in the at least one combustion chamber is measured indirectly.

    摘要翻译： 本发明涉及一种具有安装在发动机缸体和至少一个燃烧室上的至少一个发动机部件（2）的内燃机，由此爆震传感器（3），其在燃烧过程中产生作为燃烧过程的信号 至少一个燃烧室安装在发动机缸体上。 本发明的目的是提供一种内燃机，其包括爆震传感器，以影响改善的信噪比并降低气缸之间的交叉耦合。 本发明的爆震传感器（3）直接安装在燃烧室上，使得产生由燃烧过程产生的信号通过发动机缸体和经由爆震传感器（3）传递，使得燃烧在至少一个燃烧室 间接测量。

    Method for monitoring combustion stability of an internal combustion engine
    5.
    发明公开
    Method for monitoring combustion stability of an internal combustion engine 有权
    Verfahren zurÜberwachungderVerbrennungsstabilitäteiner Brennkraftmaschine

    公开(公告)号：EP1744043A1

    公开(公告)日：2007-01-17

    申请号：EP05106475.6

    申请日：2005-07-14

    申请人： Ford Global Technologies, LLC.

    发明人： Chevalier, Alain ,  Christen, Urs ,  Vantine, Katie ,  Moraal, Paul Eduard

    IPC分类号： F02D41/14

    CPC分类号： F02D41/1497 ,  F02D35/023 ,  F02D41/1498 ,  F02D2200/1012 ,  Y02T10/128

    摘要： The present invention relates to a method for monitoring combustion stability of an internal combustion engine equipped with a crankshaft, an intake manifold and at least one cylinder.
    It is the object of the present invention to provide a method of the above mentioned kind which overcomes the problems known from the state of the art, in particular a method which is suitable for online calculation.
    With respect to the object a method is provided comprising the following steps:
    ■ determining the absolute deviation e of indicated mean effective pressure p ind or indicated torque T ind with respect to their actual set point, i.e., with respect to actual indicated mean effective pressure set point p ind,setpt or actual indicated torque set point T ind, setpt , namely Δp ind or ΔT ind , or alternatively determining the relative change Δe in said deviation between two consecutive combustion cycles k, k + 1 of said at least one cylinder, i.e., determining (Δp ind,k + 1 - Δp ind,k ) or (ΔT ind,k + 1 - ΔT ind,k ) or determining the relative change Δe in angular acceleration ω' of the crankshaft between two consecutive combustion cycles k, k+1, i.e., (Δω' k + 1 - Δω' k ) , and
    ■ comparing said determinated deviation e or said change Δe with a predetermined engine operating point dependent threshold e threshold or Δe threshold in order to decide if the combustion is stable or not by means of the following inequalities:
    | e | > e threshold or | Δe | > Δe threshold means combustion is not stable,
    | e | ≤ e threshold or | Δe | ≤ Δe threshold means combustion is stable.
    The method is preferably applied to homogeneous charge combustion ignition engines (HCCI).

    摘要翻译： 本发明涉及一种用于监测配备有曲轴，进气歧管和至少一个气缸的内燃机的燃烧稳定性的方法。 本发明的目的是提供一种克服现有技术中已知的问题，特别是适用于在线计算的方法的上述类型的方法。 关于该目的，提供了一种方法，其包括以下步骤： - 确定所指示的平均有效压力p ind或指示转矩T ind相对于其实际设定点的绝对偏差e，即相对于实际指示的平均有效压力 设定点p ind，设定值或实际指示转矩设定点T ind，setpt，即“p ind”或“T ind”，或者替代地确定所述at的两个连续燃烧循环k，k + 1之间的所述偏差中的相对变化e 至少一个气缸，即确定（“p ind，k + 1”，p ind，k）或（“T ind，k + 1 - ”T ind，k）或确定角加速度É' 在两个连续的燃烧循环k，k + 1之间，即（“É”k + 1-é'k）的曲轴的曲率，以及 - 将所述确定的偏差e或所述变化e与预定的发动机工作点相关阈值 e阈值或“e阈值，以决定是否组合 通过以下不等式，稳定或不稳定：| e | > e threshold或| “e | >“e阈值意味着燃烧不稳定，| e | ‰阈值或| “e | ‰¤“e阈值意味着燃烧稳定。 该方法优选地应用于均质充气燃烧点火发动机（HCCI）。

    Method of controlling indicated torque for internal combustion engines
    8.
    发明公开
    Method of controlling indicated torque for internal combustion engines 有权
    Verfahren zur Ansteuerung des indizierten DrehmomentesfürBrennkraftmaschinen

    公开(公告)号：EP1712766A1

    公开(公告)日：2006-10-18

    申请号：EP05102982.5

    申请日：2005-04-15

    申请人： Ford Global Technologies, LLC.

    发明人： Sadai, Stephane ,  Bayliss, Warren ,  Chevalier, Alain ,  Christen, Urs ,  Vantine, Katie ,  Moraal, Paul Eduard ,  Yacoub, Yasser Mohammed Sayed

    IPC分类号： F02D41/14 ,  F02D41/24 ,  F02D35/02 ,  F02D41/30

    CPC分类号： F02D41/1497 ,  F01N2430/085 ,  F02D35/023 ,  F02D41/2422 ,  F02D41/3035 ,  F02D2041/1409 ,  F02D2041/141 ,  F02D2041/1422 ,  F02D2041/1432 ,  F02D2041/288 ,  F02D2200/1004 ,  F02D2250/18 ,  F02D2250/21

    摘要： The present invention relates to a method of controlling indicated torque for internal combustion engines by means of feedback control, wherein
    ■ the torque setpoint T ind,setpt is computed from the accelerator pedal position ( α ped ), the torque losses and, if necessary, additional signals like engine speed, gear and the like,
    ■ said torque setpoint T ind,setpt is converted into the injection pulse duration ( t pulse ) within a feedforward path,
    ■ the in-cylinder pressure p created by burning the fuel injected during injection pulse duration ( t pulse ) is measured and used for calculating actual indicated torque T ind ,
    ■ said actual indicated torque T ind is controlled to the setpoint T ind,setpt via feedback control, i.e., by closing the control loop by means of a feedback path, in order to adjust said actual indicated torque T ind ,
    It is the object of the present invention to provide a method of controlling indicated torque for internal combustion engines by means of feedback control, which ensures consistency for the torque, for all operating modes of the engine and for the transitions between those modes.
    With respect to the object a method is provided, which is characterised in that
    ■ said feedback path is provided by a torque controller which uses, possibly in addition to other signals which describe the engine operating conditions, the deviation ΔT ind between setpoint T ind,setpt and actual value T ind for the indicated torque as an input for updating at least one lookup table storing the manipulated variable, i.e., the correction of said manipulated variable, which is used as output data to adjust said actual indicated torque T ind ,
    ■ said additional signals are used for scheduling said at least one lookup table in order to enable a fast controller reaction during transient conditions, when the engine operating conditions are changing such that the correction of the manipulated variable is read out from said at least one lookup table by using the scheduling parameters as input data, and
    ■ said torque controller is provided with a low bandwidth b due to noise on the measured in-cylinder pressure signal, p, and thus on the calculated torque, T ind , in order to make said manipulated variable less sensitive to the noise of T ind by slowing down the convergence of the actual value T ind for the indicated torque to the setpoint T ind,setpt , if deviation ΔT ind is affected substantially by signal noise.

    摘要翻译： 本发明涉及通过反馈控制来控制内燃机的指示转矩的方法，其中 - 根据加速器踏板位置（±ped）计算转矩设定值T ind，setpt，扭矩损失，如有必要， 诸如发动机速度，齿轮等的附加信号， - 所述转矩设定点T ind，setpt被转换为前馈路径内的喷射脉冲持续时间（t脉冲）， - 通过燃烧注射期间喷射的燃料产生的缸内压力p 脉冲持续时间（t脉冲）被测量并用于计算实际指示转矩T ind， - 所述实际指示转矩T ind被控制到设定值T ind，通过反馈控制设置，即通过反馈闭合控制回路 路径，以便调整所述实际指示转矩T ind。本发明的目的是提供一种通过方法o来控制内燃机的指示转矩的方法 f反馈控制，确保扭矩的一致性，适用于发动机的所有操作模式以及这些模式之间的转换。 关于该目的，提供了一种方法，其特征在于 - 所述反馈路径由转矩控制器提供，转矩控制器可能除了描述发动机工作条件的其他信号之外，使用设定值T ind之间的偏差“T ind ，用于指示转矩的设定值和实际值T ind作为用于更新存储操作变量的至少一个查找表的输入，即用作所述操作变量的校正，该校正变量用作输出数据以调整所述实际指示转矩T ind， - 所述附加信号用于调度所述至少一个查找表，以便当所述发动机操作条件改变时能够在瞬态条件期间实现快速控制器反应，从而从所述至少一个查找读出所述操纵变量的校正 通过使用调度参数作为输入数据，并且 - 所述扭矩控制器由于在测量时的噪声而被提供有低带宽b 为了使所述操纵变量对于T ind的噪声不太敏感，通过将所指示的扭矩的实际值T ind的收敛减慢到对应于所计算的转矩T ind， 设定值T ind，setpt，如果偏差“T ind”受到信号噪声的影响。

    Method for monitoring combustion stability of an internal combustion engine
    10.
    发明公开
    Method for monitoring combustion stability of an internal combustion engine 有权
    监测内燃机燃烧稳定性的方法

    公开(公告)号：EP1914412A1

    公开(公告)日：2008-04-23

    申请号：EP08100261.0

    申请日：2005-07-14

    申请人： Ford Global Technologies, LLC

    发明人： Chevalier, Alain ,  Christen, Urs ,  Moraal, Paul Eduard ,  Vantine, Katie

    IPC分类号： F02D41/14

    CPC分类号： F02D41/1497 ,  F02D35/023 ,  F02D41/1498 ,  F02D2200/1012 ,  Y02T10/128

    摘要： The present invention relates to a method for monitoring combustion stability of an internal combustion engine equipped with a crankshaft, an intake manifold and at least one cylinder.
    It is the object of the present invention to provide a method of the above mentioned kind which overcomes the problems known from the state of the art, in particular a method which is suitable for online calculation.
    With respect to the object a method is provided comprising the following steps:
    ■ determining the absolute deviation e of indicated mean effective pressure p ind or indicated torque T ind with respect to their actual set point, i.e., with respect to actual indicated mean effective pressure set point p ind,setpt or actual indicated torque set point T ind, setpt , namely Δp ind or ΔT ind , or alternatively determining the relative change Δ e in said deviation between two consecutive combustion cycles k, k+1 of said at least one cylinder, i.e., determining (Δp ind k+1 - Δp ind,k ) or (ΔT ind,k+1 - ΔT ind,k ) or determining the relative change Δe in angular acceleration ω' of the crankshaft between two consecutive combustion cycles k, k+1, i.e., (Δω'k+1 Δω' k ), and
    ■ comparing said determinated deviation e or said change Δe with a predetermined engine operating point dependent threshold e threshold or Δe threshold in order to decide if the combustion is stable or not by means of the following inequalities:
    | e | > e threshold or | Δe | > Δe threshold means combustion is not stable,
    | e | ≤ e threshold or | Δe | ≤ Δe threshold means combustion is stable.
    means combustion is stable.
    The method is preferably applied to homogeneous charge combustion ignition engines (HCCI).

    摘要翻译： 本发明涉及一种用于监测配备有曲轴，进气歧管和至少一个汽缸的内燃机的燃烧稳定性的方法。 本发明的目的是提供一种上述类型的方法，其克服了现有技术中已知的问题，特别是适合于在线计算的方法。 关于该目的，提供了一种方法，其包括以下步骤：■确定指示的平均有效压力pind或指示转矩Tind相对于它们的实际设定点的绝对偏差e，即相对于实际指示的平均有效压力设定点 pind，setpt或实际指示的扭矩设定点Tind，setpt，即Δind或ΔTind，或者可选地确定所述至少一个气缸的两个连续燃烧循环k，k + 1之间的所述偏差中的相对变化Δe，即确定（Δpind k + 1-Δpind，k）或（ΔTind，k + 1-ΔTind，k）或确定曲轴在两个连续燃烧循环k，k + 1之间的角加速度ω'中的相对变化Δe，即（Δω' k + 1Δω'k），以及■将所述确定的偏差e或所述改变Δe与预定的发动机工作点相关阈值阈值或Δ阈值进行比较，以便借助于以下方面来确定燃烧是否稳定 翼不等式：| e | > ethreshold或|Δe| >Δ阈值表示燃烧不稳定，| e | ≤阈值或|Δe| ≤Δ阈值意味着燃烧稳定。 意味着燃烧稳定。 该方法优选应用于均质充量燃烧点火发动机（HCCI）。