| 摘要 |
<p>The present invention relates to a method and apparatus for detecting a misfire which may occur during the operation of an internal combustion engine, and which, in particular, not only detects a misfire, but also detects which cylinder of a multi-cylinder engine has misfired. The method and apparatus for detecting a misfire of an internal combustion engine according to the present invention involves detecting whether or not a misfire has occurred by means of the frequency which varies according to the rotational angular velocity of the rotating shaft of an engine, and quickly detecting which cylinder has misfired by matching the top dead center of a reference cylinder against the top dead centers of the individual cylinders, and using the peak position of the rotational angular velocity signal filtered by a band-pass filter. Therefore, by quickly detecting a misfire in an internal combustion engine and in which cylinder the misfire occurred, and taking preventative measures, an accident such as the stalling of the internal combustion engine can be prevented, and the service life thereof can be lengthened.</p> |
