本SAE推荐实施规程为设计用于公共道路的混合动力电动汽车（HEV）和插电式混合动力电动车辆（PHEV）建立了统一的底盘测功机试验程序。本推荐规程提供了在以下标准试验循环中测量和计算此类车辆的废气排放和燃油经济性的说明:城市测功机驾驶计划（UDDS）、公路燃油经济性驾驶计划（HFEDS）、US06驾驶计划（US06）、SC03驾驶计划（SC03）和冷态- 启动基于UDDS的联邦测试程序（冷FTP）。然而，程序的结构使得其他驾驶计划可以被替代，前提是相应的准备程序、测试长度和加权系数进行了相应修改。 本文件未规定要测量的排放成分（例如，HC、CO、NOx、CO2）；相反，该决定将取决于测试人员的目标。PHEV运行的排放计算作为库存结果提供，以与燃料和电能消耗相同的方式进行加权。 在确定认证方法之前，必须首先决定车载与非车载排放、无排放驾驶的相对优势以及如何在电量消耗（CD）模式下对冷启动循环进行最佳加权。因此，旨在证明PHEV符合排放标准的计算或测试方法超出了本文件的范围。 就本试验程序而言，HEV被定义为可从以下两种储存能量来源获取推进能量的道路车辆: （1） 消耗燃料，以及（2）可再充电能量存储系统（RESS），其由车载混合动力推进系统、外部电源或两者进行再充电。本文件涵盖的消耗性燃料仅限于石油基液体燃料（如汽油和柴油）、醇类液体燃料（例如甲醇和乙醇）和烃类气体燃料（如压缩天然气）。假设RESS是一个电化学电池组，因为使用电容器或机电飞轮测试HEV需要不同的方法来跟踪能量存储系统的能量进出。 包括测试PHEV的CD运行模式的程序，这些模式设计为常规在车外充电，并提供了根据在用驾驶统计结合CD和CS行为的计算。 本文件不包括充电相关（RD）操作模式或车辆的测试程序。有关充电相关的定义，请参见第3节。 本文件未说明计算调整后的美国环境保护局（EPA）每加仑英里（mpg）标签（有时称为“EPA五- 循环”计算）。

This SAE Recommended Practice establishes uniform chassis dynamometer test procedures for hybrid-electric vehicles (HEVs) and plug-in hybrid-electric vehicles (PHEVs) designed for public roads. This recommended practice provides instructions for measuring and calculating the exhaust emissions and fuel economy of such vehicles over the following standard test cycles: the Urban Dynamometer Driving Schedule (UDDS), the Highway Fuel Economy Driving Schedule (HFEDS), the US06 Driving Schedule (US06), the SC03 Driving Schedule (SC03), and the cold-start Federal Test Procedure (cold FTP), which is based on the UDDS. However, the procedures are structured so that other driving schedules may be substituted, provided that the corresponding preparatory procedures, test lengths, and weighting factors are modified accordingly. This document does not specify which emissions constituents to measure (e.g., HC, CO, NOx, CO2); instead, that decision will depend on the objectives of the tester. The emissions calculations for PHEV operation are provided as inventory results, weighted in the same manner as fuel and electrical energy consumption. Decisions for on-board versus off-board emissions, relative benefits of emissions-free driving, and how best to weight a cold-start cycle in charge-depleting (CD) mode must first be made before a certification methodology can be determined. Thus, calculations or test methodology intended to certify a PHEV for compliance of emissions standards is beyond the scope of this document. For purposes of this test procedure, an HEV is defined as a road vehicle that can draw propulsion energy from both of the following sources of stored energy: (1) a consumable fuel, and (2) a rechargeable energy storage system (RESS) that is recharged by the on-board hybrid propulsion system, an external electric energy source, or both. Consumable fuels covered by this document are limited to petroleum-based liquid fuels (e.g., gasoline and diesel fuel), alcohol-based liquid fuels (e.g., methanol and ethanol), and hydrocarbon-based gaseous fuels (e.g., compressed natural gas). The RESS is assumed to be an electrochemical battery pack because testing HEVs with capacitors or electromechanical flywheels requires a different approach to tracking energy in and out of the energy storage system. Procedures are included to test CD operating modes of PHEVs, which are designed to be routinely charged off-board, and calculations are provided that combine the CD and CS behavior according to in-use driving statistics. This document does not include test procedures for recharge-dependent (RD) operating modes or vehicles. See Section 3 for the definition of recharge-dependent. This document does not address the methods or equations necessary for calculating the adjusted U.S. Environmental Protection Agency (EPA) miles per gallon (mpg) labels (sometimes referred to as “EPA Five-Cycle” calculations).