A fuel additive concentrate for gasoline, a gasoline fuel containing an additive mixture, a method for reducing wear in an engine and in a fuel delivery system of a gasoline engine, and a method for improving injector performance. The additive concentrate includes an aromatic solvent and a mixture that contains (i) N,N-bis(2-hydroxyethyl)alkylamide, (ii) 2-((2-(bis(2-hydroxyethyl)amino)ethyl)amino)ethyl alkanoate and N-(2-(bis(2-hydroxyethyl)amino)ethyl)-N-(2-hydroxyethyl)alkylamide, and (iii) fatty acid ester(s) and amide(s) derived from a self-condensation product of diethanolamine (DEA) containing at least 3 amino groups. A weight ratio of (i) to (ii) to (iii) in the concentrate ranges from about 8:2:0 to about 2:5:3. The fuel additive mixture is substantially devoid of glycerin and remains fluid at a temperature down to about −20° C.
一种用于汽油的燃料添加剂浓缩物,一种含有添加剂混合物的汽油燃料,一种减少发动机和汽油发动机燃料输送系统磨损的方法,以及一种改善喷油器性能的方法。添加剂浓缩物包括一种芳香族溶剂和一种混合物,其中含有 (i) N,N-双(2-羟乙基)烷基酰胺,(ii) 2-((2-(双(2-羟乙基)
氨基)乙基)
氨基)烷酸
乙酯和 N-(2-(双(2-羟乙基)
氨基)乙基)-N-(2-羟乙基)烷基酰胺、和 (iii) 由含有至少 3 个
氨基的
二乙醇胺 (
DEA) 自缩合产物衍生的
脂肪酸酯和酰胺。浓缩物中(i)、(ii)、(iii)的重量比从约 8:2:0 到约 2:5:3。燃料添加剂混合物基本上不含
甘油,在低至约 -20°C 的温度下仍保持流动性。