ASTM D4858测定润滑油对改进二冲程循环汽油发动机预燃倾向的标准试验方法
日期:2012-02-07 17:27
due to localized overheating or as the result of preignition-induced detonation. Some lubricant additives that are widely used in four-stroke-cycle gasoline engine oils are known to increase the probability of preignition in gasoline two-stroke-cycle engines. This procedure is used to determine the tendency of an oil to induce preignition in both water-cooled and air-cooled two-stroke-cycle gasoline engines.
1. Scope
1.1 This test method evaluates the performance of lubricants intended for use
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08/27 20:18