近年来,微电子技术的发展,为微处理机在汽车上的应用开辟了广阔的前途。目前,国外比较普遍的将微处理机应用于汽车发动机的控制,实现了空燃比控制、点火时刻控制、废气再循环控制、自动变速、行驶安全以致整个汽车发动机工作的控制等等采用微处理机控制的点火系统,可以跟踪发动机的运行状况,提供该状态下的最佳点火提前角,确保发动机具有良好的动力性,经济性,并提供最佳初级电路导通时间,使发动机提高速时工作可靠,低速工作时点火线圈也不致过热。但是,使用现有微处理机控制时还存 In recent years, the development of microelectronics technology has opened up a broad prospect for the application of microprocessors in automobiles. At present, the more common foreign microprocessor control applied to the car engine to achieve the air-fuel ratio control, ignition timing control, exhaust gas recirculation control, automatic transmission, driving safety and so the entire car engine control work, etc. Using microprocessors Control of the ignition system, you can track the operating conditions of the engine to provide the best ignition timing in this state, to ensure that the engine has good power, economy, and to provide the best primary circuit turn-on time, so that the engine speed up work Reliable, low-speed operation of the ignition coil will not overheat. However, it still exists when using the existing microprocessor control