The embodiment of the invention provides a
temperature control system and method, and relates to the technical field of engines. The
temperature control method comprises the steps that the current opening degree of a
thermostat valve is acquired; an execution
duty cycle signal is generated based on the current opening degree of the
thermostat valve and the influence parameters, wherein the influence parameters comprise at least one of the
water temperature of an engine, the rotating speed of the engine, the air
inlet pressure of the engine, the air
inlet temperature of the engine and the wholevehicle speed; the execution
duty cycle signal is converted into a driving
electric signal for driving a direct-current motor
actuator and is sent to the direct-current motor
actuator; and the direct-current motor executor controls the opening degree of the
thermostat valve by utilizing the driving
electric signal. The
temperature control system and method have the advantages that in the temperature control process, the opening degree of the thermostat valve in the temperature
control system can be accurately controlled, so that the flow of cooling liquid flowing through the thermostat valvecan be accurately controlled, and therefore the working
water temperature of the engine in the large and small circulation of a cooling
system can be accurately controlled.