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    • 3. 发明授权
    • Self-tuning electronic fuel injection system
    • 自调电子喷油系统
    • US09441571B2
    • 2016-09-13
    • US13611539
    • 2012-09-12
    • Todd Alan PetersenMichael Anthony Wittkopf
    • Todd Alan PetersenMichael Anthony Wittkopf
    • F02D41/14F02D41/32F02D41/24F02D41/28
    • F02D41/32F02D41/2445F02D41/2451F02D41/2454F02D41/2477F02D2041/286F02D2200/0402F02D2200/0406F02D2200/0411
    • A self-tuning fuel injection system and method having a first long-term fuel trim correction algorithm to selectively replace an operating zone within a volumetric efficiency look-up table based with a proposed correction only if mathematical comparisons with a surrounding determinative zone reveal that the correction will not result in an abrupt discontinuity. Mathematical comparison models may include absolute values of the differences or percent differences of each proposed cell and its neighbors, the difference of each proposed cell and the mean of its eight neighbors, and standard deviation of each proposed cell and its neighbors. A second repair algorithm repairs values surrounding an operating zone that have such a dissimilar magnitude as to cause poor engine performance using linear interpolation, for example. According to the invention, either the correction or the repair algorithm, or both, are executed in series or in parallel.
    • 一种自调整燃料喷射系统和方法,其具有第一长期燃料调整校正算法,以仅在与周围决定区的数学比较时才基于所提出的校正来选择性地替换容积效率查找表内的操作区域, 校正不会导致突然间断。 数学比较模型可以包括每个提出的细胞及其邻居的差异或百分比差异的绝对值,每个提出的细胞的差异及其八个邻居的平均值,以及每个提出的细胞及其邻近物的标准偏差。 例如,第二修复算法修复围绕具有这样不相似幅度的操作区域的值,以便使用线性插值引起不良发动机性能。 根据本发明,校正或修复算法或两者都是串联或并行地执行的。