| 摘要 |
PURPOSE:To restrain efficiently knocking by changing over pressure signals to be input to a pressure system ignition timing control mechanism provided in an ignition signal generator to pressure signals varying in accordance with knocking in an internal-combustion engine to delay the ignition timing. CONSTITUTION:Titled device is constituted from a knock sensor 1, knock detector 2, ignition signal generator, ignition pulse generating circuit, ignition coil 7. The device is further provided with a pressure switch 22 for changing over the pressure signal to that varying in accordance with knock level and an ignition timing control mechanism 21 for controlling angular position of generation of ignition signal according to this pressure signal. |
