Experimental Study on Fuel Consumption and Emission of Light-duty Diesel Vehicle Based on WLTC and CLTC_C Cycle
A dynamic correction approach is introduced along with the fuel consumption discrepancy of a light-duty diesel vehicle under various running-in mileages and the impact of dynamic correction on fuel consumption and NOx emissions based on WLTC and CLTC_C cycles.Several pieces of data indicate that the fuel consumption of WLTC and CLTC_C decreases dramatically after the vehicle has run in for 10 000 km,by 41.5%and 4.4%,respectively,compared to the initial 0 km.Following 15 000 km of running-in,there is a minor reduction of 0.2%and 0.35%in the fuel consumption of WLTC and CLTC_C,respectively,with little fluctuation when compared to 10 000 km.In the 5 700 km and 15 000 km scenarios,dynamic correction for the WLTC results in a NOx emission reduction ratio of 55.3%and 54.4%,respectively,but there is minimal effect on fuel consumption,increasing by 1.2%and 1.4%,respectively.Furthermore,in the case of a 15 000 km running-in,the fuel consumption of CLTC-C increases by just 1.4%after adding dynamic correction.
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