Control method for optimizing operation condition of engine of 48V weak mixing system of commercial vehicle

The invention discloses a control method for optimizing the operation condition of an engine of a commercial vehicle 48V weak mixing system. The control method comprises the steps that S1, the state of the 48V system is monitored; s2, judging whether basic power generation conditions are met or not; and S3, monitoring the SOC of the 48V battery. And S4, judging whether the SOC of the 48V battery is lower than a set value or not. And S5, calculating the power generation demand torque. And S6, whether the power generation torque is larger than a set value 1 or not is judged. And S7, when the power generation torque is larger than the set value 1, power generation is started. And S8, judging whether the power generation torque is smaller than a set value 2 or not. And S9, when the power generation torque is smaller than the preset value 2, power generation is stopped. Therefore, according to the control method for optimizing the operation condition of the engine of the 48V weak mixing system of the commercial ve