Detonation detection method for internal combustion engines
    1.
    发明授权
    Detonation detection method for internal combustion engines 失效
    内燃机爆震检测方法

    公开(公告)号:US5978728A

    公开(公告)日:1999-11-02

    申请号:US77543

    申请日:1998-06-01

    IPC分类号: G01L5/14 G01L23/22 F02P5/152

    CPC分类号: G01L23/225

    摘要: The method includes the steps of generating a detonation signal related to the intensity of the vibration on an engine block; wide-band filtering the detonation signal; rectifying the filtered detonation signal; integrating the rectified signal; calculating the logarithm of the integration result; calculating a mean value as a function of the calculated logarithm; calculating the values of a first and second standard-deviation-related quantity as a function of the logarithm value and the mean value; and calculating a detonation coefficient value as a function of the values of the standard-deviation-related quantities.

    摘要翻译: PCT No.PCT / IT96 / 00235 Sec。 371日期1998年6月1日 102(e)1998年6月1日PCT PCT 1996年11月29日PCT公布。 公开号WO97 / 21084 日期:1997年6月12日该方法包括以下步骤:产生与发动机缸体上的振动强度有关的爆震信号; 宽带过滤引爆信号; 整流滤波后的爆震信号; 积分整流信号; 计算积分结果的对数; 计算作为计算对数的函数的平均值; 计算作为对数值和平均值的函数的第一和第二标准偏差相关量的值; 并根据标准偏差相关量的值计算爆震系数值。

    Method of detecting and controlling detonation of an internal combustion engine
    2.
    发明授权
    Method of detecting and controlling detonation of an internal combustion engine 有权
    检测和控制内燃机爆震的方法

    公开(公告)号:US06411886B1

    公开(公告)日:2002-06-25

    申请号:US09446988

    申请日:2000-03-22

    IPC分类号: G01L2322

    摘要: A method of detecting and controlling detonation, including the steps of: generating (10) a vibration signal (D) proportional to the intensity of vibration on the crankcase; wide-band-filtering (11) the vibration signal (D) to generate a first intermediate signal; rectifying (12) the first intermediate signal to generate a second intermediate signal; integrating (13) the second intermediate signal to generate a first numeric value; calculating (14) a logarithm of the first numeric value to obtain a second numeric value (Xi); calculating (16) a difference between the second numeric value (Xi) and the mean value (&mgr;i) to obtain a third numeric value (&dgr;i) with a predetermined threshold value (&dgr;o); determining (18) the presence of detonation in the event the third numeric value (&dgr;i) has a first predetermined relationship with the predetermined threshold value (&dgr;o); forming (19, 21) a detonation index (Ii) indicating the behavior of the engine in terms of detonation; and obtaining (22) a spark lead correction value (CAi) as a function of the detonation index (Ii).

    摘要翻译: 一种检测和控制爆震的方法,包括以下步骤:产生(10)与曲轴箱上的振动强度成比例的振动信号(D); 宽带滤波(11)振动信号(D)以产生第一中间信号; 整流(12)第一中间信号以产生第二中间信号; 对第二中间信号进行积分(13)以产生第一数值; 计算(14)所述第一数值的对数以获得第二数值(Xi); 计算(16)第二数值(Xi)和平均值(μi)之间的差以获得具有预定阈值(deltao)的第三数值(deltai); 在第三数值(deltai)与预定阈值(deltao)具有第一预定关系的情况下,确定(18)爆震的存在; 形成(19,21)指示发动机在爆炸方面的行为的引爆指数(Ii); 并且获得(22)作为爆轰指数(Ii)的函数的火花引线校正值(CAi)。