| 摘要 |
PROBLEM TO BE SOLVED: To suppress knocking by knocking control in any operating conditions by changing a starting timing and a complete timing detected by a knocking sensor in a knock control range according to an ignition timing set by an operating condition element. SOLUTION: Each detecting signal such as a pressure sensor 138, a water temperature sensor 142, an intake temperature sensor 144, a throttle sensor 146, a knock sensor 148, an O2 sensor 150, and the like is inputted in the control means 154 of an ignition timing control device 152, and ignition timing is controlled in a knock control range so as to suppress knocking in the case where generation of knocking is judged. At this time, the map of an operating condition element of a start timing and complete timing detected by the knock sensor 148 is retrieved, and the start timing and the complete timing of knock detection are decided. Namely, a range detected by the knock sensor 48 is changed according to change of the operating condition of the internal combustion engine 2, so as to effectively suppress knocking regardless of the operating condition. |
