基于冷却热管理的商用车燃油经济性提升试验研究

Experimental Study on Fuel Economy Improvement of Commercial Vehicles Based on Thermal Management of the Cooling System

本文以国内某中型载货商用车为研究对象,开展基于冷却系统热管理优化的整车燃油经济性提升试验研究。通过提升发动机节温器开启温度,提高了发动机的运行工作水温,降低了发动机本体摩擦功的消耗;通过优化电控硅油离合风扇控制策略,实现了发动机水温的精确控制,减少了风扇的运行时间,降低了风扇的运行功耗;整体上,综合节温器开启温度的提升、电控硅油离合风扇的控制策略优化,完成了对整车冷却系统热管理的控制,实现了整车燃油经济性的提升。

This paper presents an experimental study on a commercial vehicle,based on thermal management of the cooling system to improve fuel economy. The engine coolant temperature during the runtime is promoted by adopting a proper thermostat,thus reducing the frictional work within the engine. By adjusting the control strategy of the electric controlled silicon oil fan clutch,realizing continuously variable speed change of the fan and a decrease in the runtime and a drop of fuel consumption. In conclusion,the cooling system of the commercial vehicle is improved by adjusting a proper thermostat and the controlling strategy of the fan clutch,realizing promotion in the fuel economy.