NB/SH/T 0891-2014 在用发动机油中烟炱含量测定法 分光光度法

NB/SH/T 0891-2014 Pyrolysis content determination method for engine oil by spectrophotometry. The method of pyrolysis refers to a method used to determine the content of tars in engine oil by analyzing the color of the gas or smoke generated during the degradation of the oil. The results of this method are commonly used to evaluate the quality of engine oil