本标准旨在建立一个框架来测量PWM HVAC鼓风机控制器和无刷直流电机控制器的效率，并定义基于使用的整体效率。然后，车辆原始设备制造商可以使用该结果来证明符合监管机构制定的要求或基准。

The intention of this standard is to establish a framework to measure the efficiency of PWM HVAC Blower Controllers and Brushless DC Motor Controllers and define a usage based overall efficiency. This result can then be used by vehicle OEMs to demonstrate compliance towards requirements or benchmarks established by regulatory agencies.