1.1 本试验方法涵盖了使用SRV试验机在高频线性振动运动下测定与机械传动（MT）齿轮同步器中使用的材料摩擦相互作用的润滑剂（液体）的摩擦系数的程序。采用平面接触几何形状。 1.2 以国际单位制表示的数值应视为标准值。本标准不包括其他计量单位。 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）。本标准的用户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。 1.4 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《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。 ====意义和用途====== 5.1 该试验方法可用于快速确定用作机械传动液（MTF）的全配方润滑剂的润滑能力，以显示其与汽车机械齿轮同步器所用材料的摩擦行为。该试验方法是对台架试验的补充（例如，试验方法 D5579 和CEC L-66-99）。该测试方法是一种面向材料和应用的方法，基于现场经验的输入，使用现场经验中看到的随机、离散和恒定参数组合来表征摩擦行为（摩擦系数（cof））。该测试方法的用户应在商业化之前确定结果是否与现场性能或其他应用相关。

1.1 This test method covers a procedure for determining the coefficient of friction of lubricants (fluids) tribologically interacting with materials used in synchronizers in mechanical transmission (MT) gears under high-frequency linear-oscillation motion using the SRV test machine. A flat areal contact geometry is applied. 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.3 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. 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 can be used to quickly determine the lubricating ability of fully-formulated lubricants used as mechanical transmission fluids (MTF) to display a frictional behavior against materials used in synchronizers of mechanical gears in automotive vehicles. This test method has found to be complementary to bench tests (for example, Test Method D5579 and CEC L-66-99) by using the present test conditions. This test method is a material and application oriented approach based on inputs from field experiences for characterizing the frictional behavior (coefficient of friction (cof)) using random, discrete, and constant parameter combinations as seen in field experiences. Users of this test method should determine whether results correlate with field performance or other applications prior to commercialization.