车辆道路行驶阻力国六测试方法分析比对

Analysis and comparison of national VI test methods for vehicle road resistance

依据现行国家标准GB 18352.6—2016《轻型汽车污染物排放限值及测量方法(中国第六阶段)》的规定要求,通过三种方法(固定式风速仪滑行法、车载风速仪滑行法、基于车辆参数计算默认道路载荷法)获取测试样车的车辆道路行驶阻力,模拟出滑行阻力系数,用于后续对轻型混合动力电动汽车能量消耗量进行测试,进而分析优化汽车燃油消耗量和汽车续驶里程。测试结果表明,采用车载风速仪滑行法和固定式风速仪滑行法对样车进行摸底试验,获得的车辆道路行驶阻力能有效模拟出道路阻力系数,优化OVC-HEV测试数据。

According to the current national standard GB 18352.6—2016"Limits and Measurement Meth-ods for Pollutant Emissions from Light Vehicles(China Phase VI)",three methods(fixed anemometer coast-down method,vehicle-mounted anemometer coast-down method,and default road load calculation method based on vehicle parameters)are used to obtain the vehicle road resistance of the test sample ve-hicle and simulate the coastv-down resistance coefficient.The two parameters are subsequently use to test the energy consumption of light hybrid electric vehicles,analyze and optimize vehicle fuel consumption and driving range.From the analysis of test results,it can be seen that the vehicle road resistance ob-tained by using the vehicle mounted anemometer coast-down method and the fixed anemometer coast-down method can effectively simulate the road resistance coefficient,and optimize the OVC-HEV test data.