由转速对汽油机点火提前角进行自适应控制的研究

INVESTIGATION ON ADAPTIVE CONTROL OF SPARK ADVANCE BY SPEED IN GASOLINE ENGINES

研究了利用检测汽油机转达单一参数来进行汽油机点火提前角自适应控制的方法。从实用角度出发，在保留原汽油机分电器的基础上，将微机自适应控制和原发动机分电器开环控制结合起来进行联合控制．当汽油机处于稳定转速和缓变速时，由微机进行自适应控制；发动机运行在急变速工况时，则由分电器单独控制。这样既能保证点火系统可靠工作，又改善了原汽油机的动力性和经济性，具有实用价值。

An adaptive control method for spark advance of gasoline engine is investigated by mea-suring engine speed parameter alone,Combining the micro-computer adaptive controlmethod and open-loop control method by engine distributor,a unified controlling system isadopted from the practical view. The adaptive control method is used for the state of con-stant engine speed,whereas the distributor control method is performed for variable state ofengine speed.Thus it can not only insure the working reliability of spark ignition system butalso improve the engine power and economy performance,which has shown a practical val-ue.