1.1 本试验方法包括使用高频往复钻机（HFRR）评估柴油的润滑性。 1.2 根据规范，本试验方法适用于中间馏分燃料，如1-D级S15、S500和S5000，以及2-D级S11、S500、S5000柴油 1975年 ; 以及可用于柴油发动机的其他类似的石油基燃料。本试验方法适用于生物柴油混合物。B5包含在确定精度语句的循环程序中。 注1: 目前还不知道该测试方法能否预测所有添加剂/燃料组合的性能。 正在进行其他工作以建立这种相关性，一旦完成这项工作，可能需要对该测试方法进行未来修订。 1.3 以国际单位制表示的值应视为标准值。本标准不包括其他测量单位。 1.4 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建立适当的安全、健康和环境实践，并确定监管限制的适用性。 第节给出了具体的警告声明 7. . 1.5 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《国际标准、指南和建议制定原则决定》中确立的国际公认标准化原则制定的。 =====意义和用途====== 5.1 柴油喷射设备对柴油的润滑性能有一定的依赖性。柴油机喷油泵和喷油器等发动机部件的使用寿命缩短，有时是由于柴油润滑性不足所致。 5.2 HFRR测试结果表明，柴油喷射系统泵部件因磨损而损坏的趋势已在某些燃料/硬件组合的泵台测试中得到证明，边界润滑被认为是部件运行的一个因素。 6. 5.3 HFRR试验中产生的磨损痕迹对流体和试验材料的污染、试验燃料的温度和环境相对湿度敏感。润滑性评估对测试燃料取样和储存过程中获得的微量污染物也很敏感。 5.4 HFRR和摩擦载荷球对气缸润滑性评估仪（SLBOCLE，试验方法 第6078页 )是评估柴油润滑性的两种方法。两种测试方法之间没有形成绝对相关性。 5.5 HFRR可用于评估柴油在规定试验条件下防止磨损的相对有效性。HFRR测试结果与柴油喷射系统现场性能的相关性尚未确定。 5.6 该测试方法旨在评估边界润滑性能。虽然本试验方法中粘度对润滑性的影响并未完全消除，但已将其降至最低。

1.1 This test method covers the evaluation of the lubricity of diesel fuels using a high-frequency reciprocating rig (HFRR). 1.2 This test method is applicable to middle distillate fuels, such as Grades No. 1-D S15, S500, and S5000, and Grades No. 2-D S15, S500, and S5000 diesel fuels, in accordance with Specification D975 ; and other similar petroleum-based fuels which can be used in diesel engines. This test method is applicable to biodiesel blends. B5 was included in the round robin program that determined the precision statement. Note 1: It is not known that this test method will predict the performance of all additive/fuel combinations. Additional work is underway to establish this correlation and future revisions of this test method may be necessary once this work is complete. 1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.4 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. Specific warning statements are given in Section 7 . 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 Diesel fuel injection equipment has some reliance on lubricating properties of the diesel fuel. Shortened life of engine components, such as diesel fuel injection pumps and injectors, has sometimes been ascribed to lack of lubricity in a diesel fuel. 5.2 The trend of HFRR test results to diesel injection system pump component distress due to wear has been demonstrated in pump rig tests for some fuel/hardware combinations where boundary lubrication is believed to be a factor in the operation of the component. 6 5.3 The wear scar generated in the HFRR test is sensitive to contamination of the fluids and test materials, the temperature of the test fuel, and the ambient relative humidity. Lubricity evaluations are also sensitive to trace contaminants acquired during test fuel sampling and storage. 5.4 The HFRR and Scuffing Load Ball on Cylinder Lubricity Evaluator (SLBOCLE, Test Method D6078 ) are two methods for evaluating diesel fuel lubricity. No absolute correlation has been developed between the two test methods. 5.5 The HFRR may be used to evaluate the relative effectiveness of diesel fuels for preventing wear under the prescribed test conditions. Correlation of HFRR test results with field performance of diesel fuel injection systems has not yet been determined. 5.6 This test method is designed to evaluate boundary lubrication properties. While viscosity effects on lubricity in this test method are not totally eliminated, they are minimized.