A method for minimizing power loss, reducing a fuel consumption and/or for reducing and/or avoiding deposits in a fuel system in the direct injection diesel engines. The method contains adding a copolymer to a fuel composition, wherein the copolymer contains, in a copolymerized form: (A) an ethylenically unsaturated mono- or dicarboxylic acid or a derivative thereof, (B) an α-olefin having from 12 to 30 carbon atoms, (C) optionally an additional aliphatic or cycloaliphatic olefin which has at least 4 carbon atoms and is different from monomer (B) and (D) optionally an additional copolymerizable monomers other than monomers (A), (B) and (C), anhydride or carboxylic acid functionalities present in the copolymer are partly reacted with at least one compound (E) comprising an alcohol group and/or an amino group, and the anhydride functionalities present in the copolymer are hydrolysed and/or carboxylic ester functionalities present in the copolymer are partly hydrolyzed.
一种在直喷式柴油发动机中最大限度地减少动力损失、降低燃料消耗和/或减少和/或避免燃料系统中沉积物的方法。该方法包括向燃料组合物中添加共聚物,其中共聚物以共聚形式含有(A)
乙烯基不饱和单
羧酸或二
羧酸或其衍
生物,(B) 具有 12 至 30 个碳原子的 α 烯烃,(C) 可选的具有至少 4 个碳原子且不同于单体(B)的额外脂肪族或环脂族烯烃,(D) 可选的单体(A)以外的额外可共聚单体、(B)和(C),共聚物中存在的酸酐或
羧酸官能团部分与至少一种包含醇基和/或
氨基的化合物(E)反应,共聚物中存在的酸酐官能团
水解和/或共聚物中存在的
羧酸酯官能团部分
水解。