基于NEDC工况的发动机能量利用率分析方法

发动机能量利用率是一种分析和评价燃油经济性匹配水平的方法。首先计算出NEDC工况试验时为克服行驶阻力所做的功,再通过NEDC工况试验得出实际油耗,并将油耗转化为完全燃烧所释放的能量。将克服行驶阻力所做功除以完全燃烧释放的能量便是该车型NEDC工况试验时的能量利用率。能量利用率可用于判断开发车型与竞争车型经济性匹配水平的优劣,也可用于判断不同级别车型经济性匹配水平的优劣。

Analysis Method of Automobile Engine Energy Utilization Ratio Based on The NEDC Condition

Engine energy utilization ratio is a method of analysis and evaluation fuel economy matching level. First, calculate the work of overcoming the driving resistance in the NEDC condition, then get the actual fuel consumption from the experiment of the NEDC condition, and convert the fuel consumption into energy of complete combustion. Divide the work of overcoming the driving resistance by the energy of complete combustion is the energy utilization ratio in the NEDC condition experiment. Energy utilization ratio can be used to judge the merits of economy matching level between development vehicle and benchmark, can also be used to judge the merits of economy matching level between different level vehicles.