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    • 1. 发明授权
    • Control apparatus for internal combustion engine
    • 内燃机控制装置
    • US06718252B2
    • 2004-04-06
    • US09981241
    • 2001-10-18
    • Katsuhiko KawaiHisashi IidaMuneyuki Iwata
    • Katsuhiko KawaiHisashi IidaMuneyuki Iwata
    • F02D4114
    • F02D41/1401F02D41/1454F02D41/16F02D2041/1415F02D2041/1422F02D2041/1433
    • Calculation of a present air-fuel ratio correction coefficient correction value &Dgr;FAF (i) is based on a control parameter calculated by an ECU, a change in air-fuel ratio detected by an air-fuel ratio sensor, a deviation of an actual air-fuel ratio from a target air-fuel ratio and an immediately preceding air-fuel ratio correction coefficient correction value &Dgr;FAF (i−1) Then, a present air-fuel ratio correction coefficient FAF (i) is found by adding the present air-fuel ratio correction coefficient correction value &Dgr;FAF (i) to an immediately preceding air-fuel ratio correction coefficient FAF (i−1). As a result, the air-fuel ratio correction coefficients is not be thrown into confusion and no phenomenon of the air-fuel ratio being thrown into confusion occurs even if the control parameter is changed in accordance with operating conditions of the engine.
    • 目前的空燃比校正系数校正值ΔFAF(i)的计算基于由ECU计算的控制参数,由空燃比传感器检测的空燃比的变化,实际空燃比校正系数校正值的偏差, 从目标空燃比和前一个空燃比校正系数校正值ΔFAF(i-1)得到的燃料比,然后,通过将现有的空气燃料添加到现有的空燃比校正系数FAF(i) 比率校正系数校正值DeltaFAF(i)与前一个空燃比校正系数FAF(i-1)。 结果,空燃比校正系数不会被混淆,即使控制参数根据发动机的运行条件而变化,也不会发生空燃比的混乱现象。
    • 9. 发明授权
    • Air-fuel ratio control system for internal combustion engine
    • 内燃机空燃比控制系统
    • US5730111A
    • 1998-03-24
    • US664840
    • 1996-06-17
    • Yasumasa KajiYoshiyuki OkamotoHisashi Iida
    • Yasumasa KajiYoshiyuki OkamotoHisashi Iida
    • F02D45/00F02D41/00F02D41/14F02D41/34
    • F02D41/008F02D41/1441F02D41/1474F02D41/1456
    • An air-fuel ratio control system for an internal combustion engine includes an air-fuel ratio sensor provided at a collecting portion of an exhaust manifold. The air-fuel ratio sensor monitors an exhaust gas and changes its output in a linear fashion relative to an air-fuel ratio represented by the exhaust gas. The air-fuel ratio sensor is arranged at a position such that, after the number of strokes, corresponding to a multiple of the number of all cylinders, from a fuel injection for each cylinder, the air-fuel ratio sensor can measure an air-fuel ratio caused by the corresponding fuel injection. The system stores a target fuel amount for each of the cylinders. The system derives a feedback correction value depending on a deviation between a fuel amount introduced into the corresponding cylinder, which is derived based on the air-fuel ratio monitored by the air-fuel ratio sensor, and the stored number-of-stroke prior target fuel amount.
    • 用于内燃机的空燃比控制系统包括设置在排气歧管的收集部分处的空燃比传感器。 空燃比传感器监测排气并相对于由废气表示的空燃比以线性方式改变其输出。 空燃比传感器配置在这样的位置,使得在从每个气缸的燃料喷射开始的行程次数对应于所有气缸数的倍数之后,空燃比传感器可以测量空气 - 由相应的燃料喷射引起的燃料比。 系统存储每个气缸的目标燃料量。 该系统根据由空燃比传感器监视的空燃比导出的相应气缸中引入的燃料量与存储的行程数之前目标值之间的偏差,得出反馈校正值 燃料量。