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1.发明授权公开(公告)号：US07006913B2
公开(公告)日：2006-02-28
申请号：US10940586
申请日：2004-09-14
申请人： Stefano Sgatti , Luigi De Luca , Massimo Zanotti
发明人： Stefano Sgatti , Luigi De Luca , Massimo Zanotti
IPC分类号： G01M15/00
CPC分类号： G01M15/046
摘要： Method for finding the angular acceleration of a drive shaft of an internal combustion engine by means of a gear wheel integral with said drive shaft; the method making provision to identify, in each complete revolution of the drive shaft, a number of angular measurement lines, to measure the time used by the drive shaft to pass over each angular measurement line using the signal supplied by the gear wheel, to add algebraically, to the time used by the drive shaft to pass over each angular measurement line, a corresponding correction coefficient that takes account of any asymmetries in the gear wheel, and to determine the value of angular acceleration of the drive shaft as a function of the time used by the drive shaft to pass over each angular measurement line; the value of the correction coefficients is determined in the course of an engine fuel cut-off phase.
摘要翻译： 用于通过与所述驱动轴一体的齿轮来找到内燃机的驱动轴的角加速度的方法; 所述方法提供在所述驱动轴的每次完整转动中识别多个角度测量线，以使用由所述齿轮提供的信号来测量所述驱动轴在每个角度测量线上经过的时间，以添加 代数地说，驱动轴通过每个角度测量线所使用的时间，考虑到齿轮中的任何不对称性的相应校正系数，并且确定作为驱动轴的函数的驱动轴的角加速度的值 驱动轴通过每个角度测量线所用的时间; 在发动机燃料切断阶段的过程中确定校正系数的值。
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2.发明申请公开(公告)号：US20130191074A1
公开(公告)日：2013-07-25
申请号：US13572865
申请日：2012-08-13
CPC分类号： G01M15/11 , F02B77/085 , F02B77/086 , F02B77/087 , G01M15/042 , G06F17/16
摘要： A method detects a “misfire” condition in an internal-combustion engine including a driving shaft and phonic wheel that is splined to the shaft and coupled to a sensor. The method comprises steps of: detecting intensity of a signal generated by passage of teeth of the wheel by the sensor, sampling the signal generated by the passage of the teeth, processing the sampled signal by applying a discrete Fourier transform, representing the sampled signal processed by a virtual phasor that represents in a vector form the signal that has been sampled and processed, determining a corresponding theoretical phasor for the virtual phasor that represents theoretical evolution of the signal that has been sampled and processed over time, comparing the theoretical phasor with the virtual phasor, and determining presence of a “misfire” condition by comparing the theoretical phasor with the virtual phasor that represents the signal that has been sampled and processed.
摘要翻译： 一种方法检测内燃机中的“失火”状态，该内燃机包括驱动轴和拼接到轴上并耦合到传感器的声轮。 该方法包括以下步骤：通过传感器检测由车轮齿通过的信号的强度，对通过齿通过的信号进行采样，通过应用离散付里叶变换来处理采样信号，表示采样信号处理 通过以矢量形式表示已经被采样和处理的信号的虚拟相量，确定虚拟相量的相应的理论相量，该虚拟相量代表已经随时间采样和处理的信号的理论演化，将理论相量与 虚拟相量，并且通过将理论相量与代表已经被采样和处理的信号的虚拟相量进行比较来确定“失火”条件的存在。
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3.发明授权公开(公告)号：US09031815B2
公开(公告)日：2015-05-12
申请号：US13572865
申请日：2012-08-13
CPC分类号： G01M15/11 , F02B77/085 , F02B77/086 , F02B77/087 , G01M15/042 , G06F17/16
摘要： A method detects a “misfire” condition in an internal-combustion engine including a control unit, a driving shaft and phonic wheel that is splined to the shaft and coupled to a sensor. The method comprises steps of: detecting intensity of a signal generated by passage of teeth of the wheel by the sensor, sampling the signal generated by the passage of the teeth, processing the sampled signal by applying a discrete Fourier transform, representing the sampled signal processed by a virtual phasor that represents in a vector form the signal that has been sampled and processed, determining a corresponding theoretical phasor for the virtual phasor that represents theoretical evolution of the signal that has been sampled and processed over time, comparing the theoretical phasor with the virtual phasor, and determining presence of a “misfire” condition by comparing the theoretical phasor with the virtual phasor that represents the signal that has been sampled and processed.
摘要翻译： 一种方法检测包括控制单元，驱动轴和声轮的内燃机中的“失火”状况，所述控制单元，驱动轴和声轮与花键连接并连接到传感器。 该方法包括以下步骤：通过传感器检测由车轮齿通过的信号的强度，对通过齿通过的信号进行采样，通过应用离散付里叶变换来处理采样信号，表示采样信号处理 通过以矢量形式表示已经被采样和处理的信号的虚拟相量，确定虚拟相量的相应的理论相量，该虚拟相量代表已经随时间采样和处理的信号的理论演化，将理论相量与 虚拟相量，并且通过将理论相量与代表已经被采样和处理的信号的虚拟相量进行比较来确定“失火”条件的存在。
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