1.1 本试验方法包括使用旋转压力容器在加速热和氧化条件下测定发动机冷却液的腐蚀保护和稳定性。 1.2 以国际单位制表示的数值应视为标准。SI单位后括号中给出的值仅供参考，不被视为标准值。 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。 具体危害说明见 6.2 , 6.3 , 6.4 , 6.5 , 6.7 , 6.8 , 6.9 , 6.10 , 11.1 , 12.8 , 12.9 和 12.10 . 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====== 4.1 在涉及高温、热点区域、夹带空气或小型冷却系统或其组合的恶劣条件下运行的发动机越来越重视发动机冷却剂的氧化稳定性和腐蚀保护。 该试验方法提供了一种加速试验方法，用于评估新的、使用过的或回收的发动机冷却剂或其组合在高温氧化试验条件下的发动机冷却剂性能。该测试方法也可以作为筛选工具来确定氧化稳定性。这种方法的测试结果不能单独作为令人满意的氧化稳定性和防腐的证据。发动机冷却液配方的实际使用只能通过更全面的台架、测功机和现场测试来确定。

1.1 This test method covers determination of engine coolant corrosion protection and stability under accelerated thermal and oxidizing conditions using a rotary pressure vessel. 1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses after SI units are provided for information only and are not considered 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. Specific hazard statements are given in 6.2 , 6.3 , 6.4 , 6.5 , 6.7 , 6.8 , 6.9 , 6.10 , 11.1 , 12.8 , 12.9 , and 12.10 . 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 ====== 4.1 Engines operating under severe conditions involving high temperatures, hot spot areas, entrained air, or small cooling systems, or combinations thereof, are placing greater emphasis on engine coolant oxidation stability and corrosion protection. This test method provides an accelerated test method to assess engine coolant performance under high temperature oxidizing test conditions of new, used, or recycled engine coolants, or combinations thereof. The test method may also serve as a screening tool to determine oxidation stability. The test results of this method cannot stand alone as evidence of satisfactory oxidation stability and corrosion protection. The actual service of an engine coolant formulation can be determined only by more comprehensive bench, dynamometer, and field tests.