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1. AU2009228775 - Automotive fuel compositions

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[ EN ]
C L A I M S
1.    Use of a polymeric viscosity index (VI) improving additive, in an automotive diesel fuel composition, for the purpose of improving the acceleration performance of an internal combustion engine into which the diesel fuel composition is or is intended to be introduced or of a vehicle powered by such an engine.
2.    Use of a polymeric VI improving additive in a fuel component for an automotive diesel fuel composition, for the purpose of (i) improving the acceleration performance of an internal combustion engine into which an automotive diesel fuel composition containing the component, is or is intended to be introduced or of a vehicle powered by such an engine.
3.    Use according to any one of the preceding claims, wherein the polymeric VI improving additive comprises a block copolymer which contains one or more monomer blocks selected from ethylene, propylene, butylene, butadiene, isoprene and styrene monomers.
4.    Use according to claim 3, wherein the copolymer is styrene based.
5.   Use according to any one of the preceding claims, wherein the polymeric VI improving additive is
pre-dissolved in a solvent or fuel component.
6.   Use according to any one of the preceding claims, wherein the concentration of the polymeric VI improving additive in the diesel fuel composition is from 0.001 to 0.5 %w/w.
7.   Use according to claim 6, wherein the concentration of the polymeric VI improving additive in the diesel fuel composition is from 0.05 to 0.25 %w/w.
8.   Use of a polymeric viscosity index (VI) improving additive in an automotive diesel fuel composition substantially as herein described with reference to the examples.