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    Method for the determination of the pressure in the combustion chamber of a large diesel engine and large diesel engine
    1.
    发明公开
    Method for the determination of the pressure in the combustion chamber of a large diesel engine and large diesel engine 审中-公开
    一种用于确定大型柴油机和大型柴油发动机的燃烧室中的压力的​​方法

    公开(公告)号：EP2500705A1

    公开(公告)日：2012-09-19

    申请号：EP11158207.8

    申请日：2011-03-15

    申请人： Wärtsilä Schweiz AG

    发明人： Sudwoj, Gregory

    IPC分类号： G01L23/08 ,  G01L23/30 ,  G01M15/06 ,  G01M15/08

    CPC分类号： G01M15/08 ,  G01L23/08 ,  G01L23/30 ,  G01M15/06

    摘要： A method is proposed for the determination of the pressure in a combustion chamber (8) of a large diesel engine having at least one cylinder (2) in which a piston (3) delimiting the combustion chamber (8) can be moved back and forth and which is connected by means of a piston rod (4) to a crosshead (5) being movable in a crosshead guide which in turn is connected to a crankshaft (7) by means of a connecting rod (6). The acceleration of the crosshead (5) is measured by means of a sensor device (9) and said acceleration is used for the determination of the pressure in the combustion chamber (8). In addition, a large diesel engine is proposed.

    摘要翻译： 提出一种方法，用于将压力在一个燃烧室中的判定（8）具有至少一个汽缸（2），其中活塞（3）限定的燃烧室内的大型柴油发动机（8）可来回移动 和所有其由活塞杆（4）被连接到一个交叉头（5）是其中依次通过连接（6）杆的方式连接到曲轴（7）的十字头导向移动。 十字头（5）的加速度是由一个传感器装置（9）来测量和所述加速度是用于压力的在燃烧室（8）的确定。 此外，大型柴油机建议。

    PROCEDE D'ESTIMATION DU TAUX D'ETHANOL D'UN CARBURANT
    6.
    发明公开
    PROCEDE D'ESTIMATION DU TAUX D'ETHANOL D'UN CARBURANT 有权
    用于估计乙醇燃料在之前的

    公开(公告)号：EP2137392A2

    公开(公告)日：2009-12-30

    申请号：EP08788143.9

    申请日：2008-04-08

    申请人： Renault SAS

    发明人： EMERY, Pascal ,  NAVARRO, Marcos

    IPC分类号： F02D41/00 ,  F02D19/08 ,  G01L23/30 ,  G01M15/08

    CPC分类号： F02D41/0025 ,  F02D19/084 ,  F02D19/088 ,  F02D35/023 ,  F02D2200/0612 ,  G01M15/042 ,  Y02T10/36

    摘要： The invention relates to a method for estimating the level of ethanol in a fuel injected into an internal combustion engine over a number (n) of cycles (n being an integer greater than or equal to 1). The method comprises the following steps: determination of the start of combustion of an injected fuel for each of the cycles; calculation of the average combustion start angle 'ϑave start' from the combustion start angles (ϑ) recorded for all of the n cycles; determination of the end of combustion of an injected fuel for each of the cycles; calculation of the average combustion end angle 'ϑave end' from the combustion end angles (ϑ) recorded for all of the n cycles; calculation of the combustion time between the combustion start time on the basis of 'ϑave start' and the combustion end time on the basis of 'ϑave end'; and deduction of the level of ethanol from the combustion time on the basis of a pre-determined model or a list of combustion times and associated ethanol levels.

    Method for determining and regulating the crank angle position of a crankshaft of a four-stroke internal combustion engine
    10.
    发明公开
    Method for determining and regulating the crank angle position of a crankshaft of a four-stroke internal combustion engine 审中-公开
    Verfahren zur Bestimmung und Regelung der Winkellage der Kurbenwelle einer Viertaktbrennkraftmaschine

    公开(公告)号：EP1736656A1

    公开(公告)日：2006-12-27

    申请号：EP05105668.7

    申请日：2005-06-24

    申请人： Ford Global Technologies, LLC.

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

    IPC分类号： F02D41/34 ,  F02D35/02 ,  G01L23/30

    CPC分类号： F02D41/009 ,  F02D35/023 ,  F02D2041/0092

    摘要： The present invention relates to a method for determining and regulating the crank angle position of a crankshaft of a four-stroke internal combustion engine with at least one cylinder which is controlled by an engine control unit (ECU), comprising the following steps
    ■ ascertaining the crank angle of the crankshaft by means of a crankshaft sensor, which scans the crankshaft, in particular a toothed wheel attached to the crankshaft,
    ■ determining the present phase of the respective operation cycle of said at least one cylinder by using at least one second sensor in order to distinguish between gas inlet and expansion stroke or gas outlet and compression stroke, and
    ■ synchronising the engine if necessary.
    It is the objective of the present invention to provide a method of the above mentioned kind which does not require fuelling the engine during the synchronization procedure.
    With respect to the objective a method is provided comprising the following steps:
    ■ using at least one pressure sensor as said at least one second sensor which is capable of detecting directly or indirectly a change of the in-cylinder pressure, in particular a rise of the in-cylinder pressure,
    ■ measuring at least once the output signal p Sensor,A of said at least one pressure sensor in a first crank angle domain comprising the top dead centre (TDC),
    ■ measuring at least once the output signal p Sensor,B of the at least one pressure sensor in a second crank angle domain spaced apart from said first crank angle domain ,
    ■ calculating the expression p = pSensor,A - P Sensor , B ,
    ■ comparing p with a predetermined threshold P threshold ,
    ■ synchronizing the engine by shifting the output signal of the ECU for injection and/or ignition by 360°CA forwards or backwards, if

    p ≤ p threshold

    摘要翻译： 本发明涉及一种用于确定和调节具有由发动机控制单元（ECU）控制的至少一个气缸的四冲程内燃机的曲轴的曲柄角位置的方法，包括以下步骤 - 确定 曲柄轴的曲轴角度通过曲轴传感器，曲轴传感器扫描曲轴，特别是连接到曲轴的齿轮， - 通过使用至少一个第二传感器来确定所述至少一个气缸的相应操作循环的当前阶段 以区分气体入口和膨胀冲程或气体出口和压缩冲程，以及 - 如有必要，同步发动机。 本发明的目的是提供一种在同步过程中不需要对发动机进行加油的上述方法。 关于该目的，提供了一种方法，其包括以下步骤： - 使用至少一个压力传感器作为所述至少一个第二传感器，其能够直接或间接检测缸内压力的变化，特别是 缸内压力， - 至少测量一次包括上死点（TDC）的第一曲柄角域中的所述至少一个压力传感器的所述至少一个压力传感器的传感器A，至少测量一次输出信号p传感器 在与所述第一曲柄角域间隔开的第二曲柄角域中的所述至少一个压力传感器的B，计算表达式p = pSensor，A-P Sensor，B， - 将p与预定阈值P阈值进行比较， 通过将注射和/或点火的ECU的输出信号向前或向后移动360°CA来同步发动机，如果p‰p阈值