为了克服传统冷却系统的缺点，实现对冷却系统冷却强度的精确可调，并减少冷却系统附件功耗，使用电控部件（电子风扇、电子节温器、电子水泵）来取代传统冷却系统的机械部件。进行了发动机冷却系统冷却液流量分布试验、发动机热平衡试验和风扇、水泵、散热器的单体试验，为冷却系统的分析和建模提供了依据。使用Flowmaster软件的控制元件完成对水泵及风扇转速的控制以及电子节温器（可控开度的三通阀）的PID控制，完成了高效冷却系统的建模。比较了原机和高效冷却系统附件在NEDC循环工况下的功耗。结果表明，高效冷却系统在NEDC循环工况下节能效果显著。

For the shortcomings of traditional cooling system, it was proposed to use electronic components such as electronic fan, electronic thermostat and electronic water pump to replace the mechanical parts in order to accurately adjust the cooling intensity of cooling system and reduce the power consumption of cooling system accessories. The coolant flow distribution test of engine cooling system, the engine heat balance test and the individual test of fan, pump and radiator were carried out, which provided the basis for the analysis and modeling of cooling system. Then the control elements in Flowmaster software were used to conduct the speed control of pump and fan and the PID control of electronic thermostats or threeway valve with controllable opening and the modeling of high efficiency cooling system was completed. The power consumptions of accessories for the original machine and the high efficiency cooling system in NEDC cycle were compared. The results show that the efficient cooling system has remarkable energy saving effect in NEDC cycle.