Shell Usa, Inc.

Shell Internationale Research Maatschappij, B.v.

Allen Ambwere Aradi

Kimberly Ann Johnson

Roger Francis Cracknell

Tushar Kanti Bera

Arjun Prakash

Andreas Kolbeck

Abhishek Kar

Fuel composition comprising: (a) a base fuel suitable for use in an internal combustion engine; (b) a tetraalkylethane compound having the formula (I): wherein Ar represents an aryl group and each X is independently selected from a hydrogen atom, substituted or unsubstituted, straight chain or branched C-Calkyl group, (CH)OH or (CH)NH, wherein n is in the range of 1 to 9, provided that at least one of the X groups in each CXgroup is a hydrogen atom. The fuel composition of the present invention provides improved power and acceleration benefits, as well as increased flame speed and burn duration.

Fuel compositions

Method for reducing intake valve deposits in a spark ignition internal combustion engine which is fuelled with a gasoline fuel composition, wherein the method comprises introducing into the engine an aqueous based composition, wherein the aqueous based composition comprises (i) water, (ii) from 0 vol % to 40 vol % freezing point suppression agent, (iii) from 0 vol % to 10 vol % of surfactant, and (iv) an amine compound in a blending amount of from 0 ppmw to 1000 ppmw.

Method for reducing intake valve deposits

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Houston, TX, United States of America

Allen Ambwere Aradi