1.1 本试验方法涵盖了一个发动机试验程序，用于评估配备废气再循环的柴油发动机中柴油机油的性能特性，包括粘度增加和烟尘浓度（负载）。 2. 这种测试方法通常被称为Mack T-11。 1.1.1 该测试方法还提供了进行缩短长度测试的程序，通常称为T-11A。T-11A的程序与T-11相同，但中特别列出的项目除外 附件A7 。此外，中列出的程序修改 附件A7 请参阅T的相应部分- 11程序。 1.2 以国际单位制表示的数值应视为标准。本标准不包括其他计量单位。 1.2.1 例外情况-- 如果没有直接的SI等效物，如螺纹、国家管道螺纹/直径、卡套管尺寸，或有唯一来源的供应设备规范。 1.3 本标准并不旨在解决与其使用相关的所有安全问题（如有）。本标准的使用者有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 看见 附件A6 针对特定的安全隐患。 1.4 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。 ====意义和用途====== 5.1 该试验方法旨在评估配备EGR的涡轮增压和中冷四循环柴油发动机中机油的粘度增加和烟尘浓度（负载）性能。从废油分析中获得结果。 5.2 当遵循程序的所有细节时，该测试方法可用于发动机机油规格验收。

1.1 This test method covers an engine test procedure for evaluating diesel engine oils for performance characteristics in a diesel engine equipped with exhaust gas recirculation, including viscosity increase and soot concentrations (loading). 2 This test method is commonly referred to as the Mack T-11. 1.1.1 This test method also provides the procedure for running an abbreviated length test, which is commonly referred to as the T-11A. The procedures for the T-11A are identical to the T-11 with the exception of the items specifically listed in Annex A7 . Additionally, the procedure modifications listed in Annex A7 refer to the corresponding section of the T-11 procedure. 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.2.1 Exceptions— Where there is no direct SI equivalent such as screw threads, National Pipe Threads/diameters, tubing size, or where there is a sole source supply equipment specification. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. See Annex A6 for specific safety hazards. 1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 5.1 This test method was developed to evaluate the viscosity increase and soot concentration (loading) performance of engine oils in turbocharged and intercooled four-cycle diesel engines equipped with EGR. Obtain results from used oil analysis. 5.2 The test method can be used for engine oil specification acceptance when all details of the procedure are followed.