| 摘要 |
<p>IMPROVED CONTROLLED-DURATION CONTINUOUS WAVE HIGH-FREQUENCY IGNITION SYSTEM (D#74,172-F) An ignition system for internal combustion engines. It concerns an improvement for a controlledduration continuous-wave high-frequency system, that has an output transformer with a control winding thereon. The system has an oscillator with the output transformer included therein. The oscillator generates spark energy, and an engine-timed unit controls an electronic switch that starts and stops the oscillator by breaking and making a loading circuit for the control winding. The improvement concerns a time constant element in electronic circuit means between the engine-timed unit and the electronic switch. The arrangement is such that the engine-timed unit controls the beginning of all spark intervals, and the end of each spark interval at less than a predetermined speed of the engine. But, only the time constant element controls the end of each spark interval at more than the predetermined speed of the engine. I</p> |
