关键词: 清净剂, 未洗胶质, 实际胶质, 差值, 车用汽油

Abstract: The feasibility of evaluating the amount of detergent additives in automobile gasoline based on the difference value (D-value) between the amount of unwashed gum and existent gum was studied. By adding various amounts of given detergent additives to gasoline samples from various refineries and determining the D-values of these samples, the relationship of detergent types and added dosages on D-values was analyzed. In the analysis, a statistics software MINITAB was involved and finally a delimitative D-value was obtained, which could be used to evaluate the added amount of detergent in gasoline enough or not. Application results showed that this method is feasible and it could be used to supervise the addition of detergent in gasoline.

Key words: detergent additive, unwashed gum, existent gum, difference, vehicular gasoline