Method for controlling jet homogeneity lean burn of internal combustion gasoline engine natural air inlet with optimized combination piston ring

The invention relates to the field of engine electronic control, in particular to a method for controlling jet homogeneity lean burn of an internal combustion gasoline engine natural air inlet with an optimized combination piston ring. The method comprises the following steps that an engine control unit receives detection information of a sensor, compares the received detection information with a set target value and outputs a feedback signal; an executive component controls the air-fuel ratio. The engine control unit comprises a sensor interface circuit, a digital core circuit, a single-chip microcomputer, an executing drive circuit, a power source circuit and a communication circuit. According to the method, an original set oil injection pulse spectrum in the ECU is configured according to the characteristics of air intake of engines with different displacements, different load rates are automatically analyzed, new setting is completed, the large air-fuel ratio of a better gasoline-saving effect is achieved