| 摘要 |
<p>The invention provides the use, as an additive in a diesel fuel comprising a major proportion of a diesel oil, of an effective concentration of a polyether derivative of the general formula (I): R1-O-(R3-O)x-R2, wherein each of R1 and R2 independently represents a hydrogen atom, a C1-30 alkyl or alkenyl group optionally substituted by one or more amino or hydroxy groups, or a C2-7 alkanoyl group, x has an average value in the range 2 to 200, and each moiety R3 is independently selected from C2-4 alkylene moieties, for reducing white smoke emissions under cold-running engine conditions, and a method of operating a diesel engine under cold-running conditions with reduced white smoke emissions.</p> |
