Method and Apparatus for Controlling Water Temperature of Engine

An apparatus for controlling a water temperature of an engine, comprising:

• a temperature collection module, configured to collect outlet water temperatures of the engine at predetermined time intervals;
• a water temperature function determination module, configured to determine, when a number of the collected outlet water temperatures of the engine is greater than or equal to a predetermined number are collected, a water temperature variation function of the outlet water temperatures of the engine with time according to collected each outlet water temperature of the engine and collection time corresponding to the each outlet water temperature of the engine;
• a performance parameter determination module, configured to determine performance parameters of a cooling system under the water temperature variation function;
• and
• a control module, configured to control controllable parts of the cooling system according to the performance parameters of the cooling system.