Fuel-saving diesel fuels, comprising a fuel additive, their use as well as the use of the fuel additive for the production of carbon black arms diesel fuels

摘要

The present invention relates to a carbon black arms diesel fuel, comprising a fuel additive, their uses as well as the use of the fuel additive for the production of carbon black arms diesel fuels. The diesel fuels are based in particular on xtl - diesel fuels, the with poly - oxa - alkanes of the general formula (i) are formulated:R¹(-O - ch₂-Chr²)_m-O - r³.In the formula (i), the radicals r¹ for a straight-chain or branched alkyl radical, r² for a straight-chain or branched alkyl radical or h and r³ likewise represents a straight-chain or branched alkyl radical, or in addition, m is ≧ 1, and the fuel additive in the substantially free of toxic constituents. Diesel fuels formulated in such a way have a distinctly reduced soot formation on. The proportion of the premixed combustion, and the density is increased and thus the volumetric heating value reduction, which in the case of replacement of ch₂-Groups in long-chain alkanes by o - groups occurs, compensated. Likewise, through the use of such diesel fuels, the combustion temperature is lowered and thus the formation of no.sub.x._x reduced.Furthermore, the invention relates to a process for the homogenization of diesel fuel / alkanol - mixtures, in which by admixture of the described poly - oxa - alkanes a single-phase diesel fuel is obtained. Such mixtures are selected in view of decreasing crude oil reserves of interest because primary alcohols, such as ethanol, can be easily and inexpensively ..