Combined with the driving resistance setting of a heavy-duty vehicle chassis dynamometer, the transportation coach coast down test method has already been analyzed by dynamics theory, according to GB/T 27840-2011. Meanwhile, the rolling resistance coefficient and air resistance coefficient have also been obtained by the reverse solving method to the driving resistance, which is completed with the least square method. The fuel consumption ratio of the laboratory virtual condition, which is basis of the engine all working characteristics, chassis dynamometer simulation condition, which is based of C-WTVC condition, real road condition, which is based on top-grade constant speed running condition, have all been researched respectively, which also provides significant advices for overcoming existing problems of fuel consumption of heavy-duty commercial vehicles and for subsequent revising of the GB/T 27840-2011 standard.
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机译：根据GB / T 27840-2011，通过动力学理论与重型车辆底盘测力计的驱动电阻设置结合了重型车辆底盘测力计的运输教练沿着试验方法。同时，通过反向求解方法对驱动电阻的反向求解方法也获得了滚动阻力系数和空气阻力系数，其以最小二乘法完成。实验室虚拟条件的燃料消耗比，这是发动机的基础，所有工作特性，底盘测力计仿真条件，基于C-WTVC条件，真正的道路状况，基于顶级恒定速度运行条件，已分别研究过，这还提供了克服重型商用车燃料消耗问题的重要建议，并随后修改了GB / T 27840-2011标准。
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