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    Knock control system for supercharged internal combustion engine
    1.
    发明授权
    Knock control system for supercharged internal combustion engine 失效
    增压内燃机爆震控制系统

    公开(公告)号：US4715184A

    公开(公告)日：1987-12-29

    申请号：US901819

    申请日：1986-08-29

    申请人： Kouichi Oosawa ,  Yoshiaki Kinoshita

    发明人： Kouichi Oosawa ,  Yoshiaki Kinoshita

    IPC分类号： F02D23/00 ,  F02B1/04 ,  F02B37/12 ,  F02D41/00 ,  F02D43/00 ,  F02P5/15 ,  F02P5/152 ,  F02P5/153

    CPC分类号： F02P5/1528 ,  F02D41/0007 ,  F02P5/1527 ,  F02B1/04 ,  Y02T10/144 ,  Y02T10/46

    摘要： A supercharged engine knock control system of the class in which spark advance is retarded by a retard correction value varying in response to an occurrence of knocking is improved in such a manner that the retard correction value computed under engine conditions which do not accurately reflect the octane rating of the fuel is not taken into account in determining the boost pressure control. To this end, the knock control system comprises a memory for storing predetermined engine load threshold values that vary depending on engine speed. Boost pressure is lowered when the actual engine load is greater than the engine load threshold value and when the retard correction value is greater than a reference value.

    摘要翻译： 通过响应于发生爆震而变化的延迟校正值延迟火花提前的增压发动机爆震控制系统得到改善，使得在发动机条件下计算的延迟校正值不能精确地反映辛烷值 在确定增压压力控制时，不考虑燃料的额定值。 为此，爆震控制系统包括用于存储根据发动机转速变化的预定发动机负载阈值的存储器。 当实际发动机负荷大于发动机负荷阈值时，以及延迟校正值大于参考值时，升压压力降低。