Engine thermal management control method

The invention discloses an engine thermal management control method which is based on an engine thermal management system comprising an electric control thermostat, an electric control water pump, a radiator, an electric control air inlet grille and an electric control fan. The engine thermal management control method comprises the steps that S1, whether the opening degree of an accelerator is suddenly increased by a% or not is judged, if yes, the electric control water pump runs at the highest speed, the electric control air inlet grille is opened, the rotating speed of the electric control fan is controlled according to the temperature of cooling liquid, and the electric control thermostat is controlled to execute large circulation; if not, the step S3 is executed; S3, whether the opening degree of the accelerator is suddenly reduced by b% or not is judged, and if not, the four electric control components are kept in the current state; if yes, the step S4 is executed; S4, the rotating speed of the electric