| 摘要 |
PURPOSE:To control car speed as required and alternate small ignition and small miss fire by creating an ignition stopping signal from a rotation information signal which is synchronized with an ignition signal generated in accordance with the rotation of an engine and from the comparison of voltage with reference voltage, and gradually decreasing ignition voltage with rise in rotation of said engine. CONSTITUTION:An ignition signal generated in accordance with the rotation of an engine outputs an ignition pulse having a pulse width of an appropriate closed circuit angle corresponding to the operating condition, a switching circuit 23 electrifies an ignition coil 24 according to this ignition pulse, and a high voltage is generated on shutting off the electrifying current, to ignite the engine.A circuit 31 outputs a pulse at a defined interval from the time of ignition, while voltage from an F-V convertor 32 is compared with voltage from a reference voltage generator 34 by a comparator 33, to output an ignition stopping pulse. A transmission switch 35 closes a contact point at a required car-speed limiting speed. The electrifying time to the ignition coil 24 becomes gradually shorter with increase in engine speed, and the electrification is soon stopped. |
