本文件已被SAE IC动力传动系统指导委员会宣布为“稳定”，不再接受货币定期审查。用户负责验证参考文件和技术要求的持续适用性。新技术可能存在。本SAE推荐实施规程中介绍的方法适用于低温充气、风冷、重型柴油发动机的控制试验。本文件包括以下主要部分:a.）相关参数的定义；b、 ）车辆试验，以确定这些参数的典型值； c、 ）测试单元系统的设置和操作说明；和d.）测试单元系统的验证测试。虽然本文件未涉及，但车辆发动机冷却器系统的计算机建模被认为是确定冷却器系统性能的有效工具，可用于补充所述测试。然而，在将模型用于上述目的之前，应进行充分的车内测试，以验证模型。该程序参考了美国环境保护局（US EPA）规定的试验循环，并包含在《联邦法规》中。 确认存在可用于验证测试的其他国际测试周期。

This document has been declared "Stablized" by the SAE IC Powertrain Steering Committee and will not longer be subjected to periodic reviews for currency. Users are responsible for verifying references and continued suitability of technical requirements. Newer technology may exist.The methods presented in this SAE Recommended Practice apply to the controlled testing of low-temperature charge, air-cooled, heavy-duty diesel engines. this document encompasses the following main sections: a.) definitions of pertinent parameters; b.) Vehicle testing to determine typical values for these parameters; c.) Description of the setup and operation of the test cell system; and d.) Validation testing of the test cell system.While not covered in this document, computer modeling of the vehicle engine cooler system is recognized as a valid tool to determine cooler system performance and could be utilized to supplement the testing described. However, adequate in-vehicle testing should be performed to validate the model before it is used for the purposes outlined.The procedure makes references to test cycles that are prescribed by the United States Environmental Protection Agency (US EPA) and are contained in the Code of Federal Regulations. The existence of other international test cycles, which can be used for validation testing, is acknowledged.