The Lubrizol Corporation

David L Spivey

John Kent Pudelski

William Bricker Chamberlin, Iii

Robert H Barbour

Stuart L Bartley

Mark Davies

Anthony R Frank

Garrett Parker

Michael D Nicholls

Alexander Michlberger

Adam E Franczak

Alexander Holmes

George S Szappanos

Mark C Davies

Methods of reducing stochastic pre-ignition events and/or carbonaceous deposits in a gasoline-fueled engine by adding at least 10 ppm by weight of a compound having at least one alkyl succinic acid group to a gasoline fuel, wherein said compound is the product of (a) and (b), wherein: (a) is an amine with at least one tertiary nitrogen, water, or a hydrocarbyl substituted alcohol; and (b) is a hydrocarbyl-substituted succinic acid and/or anhydride.

Fuel additive compositions for gasoline direct injection engines

A fuel composition contains (a) a medium substantially free of to free of sulphur; (b) a detergent/dispersant additive; and (c) a liquid fuel where the medium substantially free of to free of sulphur is an aliphatic hydrocarbon solvent, and where the aliphatic hydrocarbon solvent is present from at least about 50 wt % to about 100 wt % of the total amount of the medium. The fuel composition is prepared by a process and is useful in a process, where the fuel composition includes a medium that is a hydrocarbon or a nonhydrocarbon or a mixture thereof, to increase the efficiency of an exhaust after-treatment device of an internal combustion engine.

Fuel composition containing a medium substantially free of sulphur and process thereof

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Staffordshire, United Kingdom

David L Spivey