Key technologies of energy saving for a heavy-duty commercial vehicle
To reduce fuel consumption in heavy-duty commercial vehicles,MATLAB software is used for comprehensive evaluation of various energy-saving technologies,including high-efficiency clean combustion of diesel engines and non-refrigerant Rankine cycle waste heat recovery in internal combustion engines.The fuel consumption of benchmark model and demonstration vehicle,as well as the reduction in fuel consumption achieved by different energy-saving technologies,are tested in full vehicle dynamometer tests.Road tests are also conducted on two types of vehicles.The results indicate that for the benchmark model,high-efficiency clean combustion technology for heavy-duty diesel engines has the best comprehensive evaluation effect in MATLAB simulations.Single-vehicle energy network optimization management technology,truck aerodynamics drag reduction technology,and low rolling resistance tire technology also show good comprehensive evaluation effects.Full vehicle dynamometer tests reveal that the demonstration vehicle with energy-saving technologies achieves fuel savings rates of 11.79%and 12.46%in the world heavy duty transient cycle and China semi-trailer tractor train driving cycle,respectively,with the best fuel-saving effect from low rolling resistance tire technology,reducing fuel consumption by 1.42 L/(100 km).After optimization with energy-saving technologies,the comprehensive fuel-saving rate is 12.17%.
heavy-duty commercial vehiclekey technology of energy-savingvehicle economyreal vehicle test
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