The Impact of EGR on WLTC Cycle Fuel Consumption of the PHEV Vehicle
The EGR technology can effectively improve the thermal efficiency of gasoline engines,thereby reducing the fuel consump-tion of the entire vehicle.Currently,domestic vehicle fuel consumption is generally evaluated using the WLTC cycle fuel consumption evaluation standard.This article analyzes the fuel consumption data of a certain type of PHEV vehicle under the WLTC standard cycle with EGR on/off,and obtains the improvement effect and main influencing factors of EGR on the WLTC cycle fuel consumption of PHEV vehicles.In this test,the high-speed section of the WLTC cycle has a relatively large proportion of series mode,which allows the engine to operate for a long time in the high EGR rate region,achieving the highest fuel consumption benefit.Based on the results of this experiment,reasonable control strategy design can be carried out according to the characteristics of different speed sections,which is conducive to fully leveraging the advantages of EGR technology and improving the fuel economy and emission performance of PHEV vehicles.
万方数据
维普
