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小型柴油机受燃烧室空间限制普遍存在油膜蒸发和燃烧现象。但多年来油膜过程的研究一直是薄弱环节,尤其对于油膜厚度至今没有一种精确的缸内测试方法。国内外都有人采用电导法,测量时需在不导电的燃油中掺添加剂或用其它导电液体代替,使试验油的理化性质偏离了实际燃料。此外,液体导电性对物质种类、相对浓度、温度、杂质成分等很敏感,从
Small diesel engines are subject to combustion chamber space limitations commonly exist in the film evaporation and combustion phenomenon. However, the research on oil film process has been a weak link for many years, and so far there is no accurate in-cylinder test method for oil film thickness. Conductance method has been used both at home and abroad, the measurement of non-conductive fuel required to be mixed with additives or other conductive liquid instead of the physical and chemical properties of the test oil deviated from the actual fuel. In addition, liquid conductivity of the species, the relative concentration, temperature, impurity composition is very sensitive, from