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    Enhanced method of sensing ionization current in spark ignition internal combustion engines and related spark plug structures
    1.
    发明授权
    Enhanced method of sensing ionization current in spark ignition internal combustion engines and related spark plug structures 有权
    在火花点火内燃机和相关火花塞结构中检测电离电流的增强方法

    公开(公告)号：US08941385B2

    公开(公告)日：2015-01-27

    申请号：US13654891

    申请日：2012-10-18

    Applicant: STMicroelectronics S.r.l.

    Inventor： Davide Giuseppe Patti ,  Mario Paparo ,  Domenico Rossi

    IPC: H01T21/02 ,  H01T13/30 ,  F02P17/12 ,  H01T13/40 ,  H01T13/60

    CPC classification number: H01T13/40 ,  F02P2017/125 ,  H01T13/60 ,  H01T21/02

    Abstract: A spark plug, including an insulator embedding a first metallic electrode axially extending therethrough from a high voltage outer end terminal to the center of the inner end of the insulator from which it protrudes; a metallic ground electrode isolated from the first electrode and having an extended inner termination facing toward the first electrode extending from the insulator tip for defining therebetween a spark gap, a resistive element connected to the ground electrode such that upon mounting the spark plug in an internal combustion engine, the ground electrode electrically connects to the engine body through the resistive element; and a second outer termination of the ground electrode, adapted to constitute an accessible sensing terminal.

    Abstract translation: 一种火花塞，包括绝缘体，其嵌入从高压外端端子轴向延伸穿过其中突出的绝缘体的内端的中心的第一金属电极; 金属接地电极，与第一电极隔离并且具有面向从第一电极延伸的第一电极的延伸的内部端子，其从绝缘体末端延伸以在其间形成火花隙;电阻元件，连接到接地电极，使得在将火花塞安装在内部 内燃机，接地电极通过电阻元件电连接到发动机主体; 以及接地电极的第二外部端子，适于构成可访问感测端子。

    METHOD AND PROCESSING SYSTEM OF SENSED IONIZATION CURRENT DATA FOR REAL TIME ESTIMATION OF COMBUSTION CHAMBER PRESSURE IN A SPARK IGNITION ENGINE
    2.
    发明申请
    METHOD AND PROCESSING SYSTEM OF SENSED IONIZATION CURRENT DATA FOR REAL TIME ESTIMATION OF COMBUSTION CHAMBER PRESSURE IN A SPARK IGNITION ENGINE 有权
    感应电流电流数据的方法和处理系统，用于实时估计火花点火发动机的燃烧室压力

    公开(公告)号：US20140336956A1

    公开(公告)日：2014-11-13

    申请号：US14272980

    申请日：2014-05-08

    Applicant: STMicroelectronics S.r.l.

    Inventor： DavideGiuseppe Patti ,  Mario Paparo

    IPC: F02P17/12 ,  G01M15/09

    CPC classification number: F02P17/12 ,  F02D35/021 ,  F02D35/024 ,  F02D41/22 ,  F02D41/2422 ,  F02D41/2425 ,  G01M15/042 ,  G01M15/09 ,  Y02T10/40

    Abstract: The pressure in the combustion chamber of an electronically controlled spark plug ignition engine may be estimated in real time mode without specific sensors by processing sensed ionization current data to calculate features of the current waveform proven to be correlated to the pressure inside the engine cylinders and correlating them on the basis of a look up table of time invariant correlation coefficients generated through a calibration campaign of tests on a test engine purposely equipped with sensors. A mathematical model of the electrical and physical spark plug ignition system and combustion chamber of the engine is refined during calibration by iteratively testing the interactive performance of correlation coefficients of related terms of a mathematical expression of the model and comparing the expressed pressure value with the real pressure value as measured by a sensor.

    Abstract translation: 电子控制的火花塞点火发动机的燃烧室中的压力可以通过处理感测的电离电流数据而实时模式估计，而不需要特定的传感器来计算被证实与发动机气缸内的压力相关的电流波形的特征， 它们基于通过针对具有传感器的测试引擎上的测试的校准活动产生的时间不变相关系数的查找表。 在校准期间，通过迭代测试模型的数学表达式的相关项的相关系数的交互性能，并将表达的压力值与实际值进行比较，来对发动机的电火花塞点火系统和燃烧室的数学模型进行精细化 由传感器测量的压力值。

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