| 摘要 |
PURPOSE:To cause misfire of an engine for preventing reversing, by utilizing a signal synchronized to engine revolution and another signal lagged from the first one by a preset angle. CONSTITUTION:A pulser 4 generates a first signal, while the other pulser 10 generates a second signal lagging from the first one by a preset angle. When the engine is reversed, an ignition signal voltage for conducting a semiconductor control element 7 is shorted to a transistor 24, without reaching the working level of the element 7. Since the element 7 does not conduct and the charge on a capacitor 3 is not discharged, the engine misfires. |
