| 摘要 |
<p>PROBLEM TO BE SOLVED: To more properly distinguish between generation detection of knocking and generation detection of preignition.SOLUTION: An abnormal combustion-detecting device (50) includes an abnormal combustion detection-processing portion (523b). The abnormal combustion detection-processing portion is electrically connected to a vibration sensor and a crank angle sensor to detect a generation state of abnormal combustion on the basis of outputs from the vibration sensor and the crank angle sensor. The abnormal combustion detection-processing portion includes a section setting portion (523b1). The section determining portion determines a first detection section as a detection section of knocking, and a second detection section as a detection section of preignition in different crank angle sections. In particular, the section determining portion determines the second detection section on the basis of an ignition period determined by an ignition period determining portion.</p> |
