1.1 这种测试方法，通常被称为Cummins ISB测试，涵盖了现代5.9 L、 配备废气再循环的柴油发动机，用于评估与配气机构磨损有关的机油性能。 1.2 以国际单位制表示的数值应视为标准。本标准中不包括其他计量单位。 1.2.1 例外情况-- 所有参数均采用国际单位制，但没有直接等效单位的情况除外，如螺纹、国家管道螺纹/直径、管道尺寸，或有唯一供应设备规范来源的情况。 1.2.2 另请参阅 A7.1 澄清；它不会取代 1.2和 1.2.1 。 1.3 本标准并非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A1 一般安全预防措施。 1.4 目录: 部分 范围 1. 参考文件 2. 术语 3. 试验方法总结 4. 意义和用途 5. 仪器 6. 发动机油液和清洁溶剂 7. 仪器的准备 8. 发动机/支架校准和非参考油测试 9 测试程序 10 计算、评级和测试有效性 11 汇报 12 精度和偏差 13 附件 安全注意事项 附件A1 进气后冷器 附件A2 康明斯ISB发动机制造零件套件 附件A3 传感器位置和特殊硬件 附件A4 外部机油系统 附件A5 康明斯服务出版物 附件A6 指定的单位和格式 附件A7 机油分析 附件A8 替代燃料审批流程 附件A9 1.5 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 该测试方法是为了评估重型- 在配备有废气再循环硬件的滑动挺杆从动件的涡轮增压和后冷四循环柴油发动机中，在选择加速烟尘产生和气门机构磨损的操作条件下控制发动机磨损的负载发动机油。 5.2 该试验方法中使用的发动机设计代表了许多（但不是所有）现代柴油发动机。在推断试验结果时，应考虑该因素以及加速运行条件。

1.1 This test method, commonly referred to as the Cummins ISB Test, covers the utilization of a modern, 5.9 L, diesel engine equipped with exhaust gas recirculation and is used to evaluate oil performance with regard to valve-train wear. 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— SI units are provided for all parameters except where there is no direct equivalent such as the units for screw threads, National Pipe Threads/diameters, tubing size, or where there is a sole source of supply equipment specification. 1.2.2 See also A7.1 for clarification; it does not supersede 1.2 and 1.2.1 . 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 A1 for general safety precautions. 1.4 Table of Contents: Section Scope 1 Referenced Documents 2 Terminology 3 Summary of Test Method 4 Significance and Use 5 Apparatus 6 Engine Fluids and Cleaning Solvents 7 Preparation of Apparatus 8 Engine/Stand Calibration and Non-Reference Oil Tests 9 Test Procedure 10 Calculations, Ratings, and Test Validity 11 Report 12 Precision and Bias 13 Annexes Safety Precautions Annex A1 Intake Air Aftercooler Annex A2 The Cummins ISB Engine Build Parts Kit Annex A3 Sensor Locations and Special Hardware Annex A4 External Oil System Annex A5 Cummins Service Publications Annex A6 Specified Units and Formats Annex A7 Oil Analyses Annex A8 Alternate Fuel Approval Process Annex A9 1.5 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 assess the performance of a heavy-duty engine oil in controlling engine wear under operating conditions selected to accelerate soot production and valve-train wear in a turbocharged and aftercooled four-cycle diesel engine with sliding tappet followers equipped with exhaust gas recirculation hardware. 5.2 The design of the engine used in this test method is representative of many, but not all, modern diesel engines. This factor, along with the accelerated operating conditions, shall be considered when extrapolating test results.