The invention discloses a self-adaptive step-by-step speed regulation method for a
diesel engine. The method comprises the follow steps: S1, obtaining the initial driving
step number of a stepping motor of the
diesel engine in the current gear, and driving the stepping motor to the initial driving
step number; S2, monitoring the actual speed of the
diesel engine, and judging whether the error between the actual speed and the preset target speed of the diesel engine at the current gear is larger than the preset threshold value or not; if yes, going to S3; if not, going to S4; S3, calculating the driving
step number of the stepping motor, adjusting the driving step number of the stepping motor of the diesel engine in the current gear, and going to S2; S4, storing the driving step number of the stepping motor of the diesel engine in the current gear to a step-by-step speed regulation
system for the diesel engine. When the speed of the diesel engine does not conform to the standard, the method can quickly and accurately automatically regulate the speed, and meet the overall performance requirements of the diesel engine, the
control effect is good, debugging is convenient , and the diesel engine is economic and durable.