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    • 2. 发明授权
    • Method and arrangement for detecting combustion misfires of a internal
combustion engine
    • 用于检测内燃机的燃烧失火的方法和装置
    • US6091244A
    • 2000-07-18
    • US102779
    • 1998-06-23
    • Juergen Rottler
    • Juergen Rottler
    • F02D45/00F02P17/12F02P17/00
    • F02P17/12
    • The invention is directed to a method of detecting combustion misfires of an internal combustion engine wherein an ion current is generated during the operation of the engine. The ion current signal is detected over a pregiven time interval starting with the discharge of a spark plug. The ion current signal is integrated over time with a weighting function to obtain a weighted integrated signal and the weighting function is adapted to previously detected ion current signals. The maximum of the weighted integrated signal is compared to a threshold value (s.sub.-- io) dependent upon engine rpm (nmot) and load (rl). A fault signal is outputted when the threshold value (s.sub.-- io) is not exceeded. The invention is also directed to an arrangement for detecting the combustion misfires.
    • 本发明涉及一种检测内燃机的燃烧失火的方法,其中在发动机操作期间产生离子电流。 离子电流信号在从火花塞放电开始的预定时间间隔内被检测。 随着时间的推移,离子电流信号与加权函数集成以获得加权积分信号,加权函数适用于先前检测到的离子电流信号。 将加权积分信号的最大值与取决于发动机转速(nmot)和负载(rl)的阈值(s-io)进行比较。 当不超过阈值(s-io)时,输出故障信号。 本发明还涉及一种用于检测燃烧失火的装置。