The Lubrizol Corporation

Lubrizol Advanced Materials, Inc.

Matthew D Gieselman

Patrick E Mosier

Seth L Crawley

William R S Barton

John Kent Pudelski

Jody A Kocsis

Mary Galic Raguz

Jeffry G Dietz

Ewan E Delbridge

Virginia A Carrick

Joanne L Jones

Renee A Eveland

Adam J Preston

Daniel J Saccomando

Calvin W Schroeck

Christopher L Friend

David J Moreton

Mark C Davies

Jason R Brown

William C Ward, Jr

Alexander Sammut

Dean Thetford

Paul R Stevenson

Michael R Sutton

Jonathan S Vilardo

Brent R Dohner

Thomas S Derevjanik

Douglas M Barr

John G Loop

William C Ward

Michelle M Rogers

James D Burrington

Yanshi Zhang

Ewa A Bardasz

Deborah A Langer

Christopher J Kolp

Michael J Covitch

Jack C Kelley

Daniel J Knapton

William Barton

Mark T Tierney

Philip W Pike

Mark Davies

William Ellyatt

Mark L Tierney

John K Pudeiski

Matthew Henley

Mitchell Gentile

Preston J Adam

Friend L Christopher

Colin J H Morton

The invention is directed to a method for reducing low speed pre-ignition events in a spark-ignited direct injection internal combustion engine by supplying to the sump a lubricant composition which contains an oil of lubricating viscosity and an ashless dispersant. The ashless dispersant may be selected from succinimide compounds prepared from aliphatic or aromatic amines.

Lubricant compositions for direct injection engine

The present invention relates to a lubricating composition containing (a) an oil of lubricating viscosity; and (b) a compound selected from the group consisting of: (i) an ester-containing heterocycle; (ii) an amide-containing heterocycle; and (iii) a pyrimidine, wherein the ester-containing heterocycle and the amide-containing heterocycle have a hydrocarbyl group containing 6 to 40 carbon atoms. The invention further provides for a method of supplying an internal combustion engine with the lubricating composition.

Composition containing heterocyclic compounds and a method of lubricating an internal combustion engine

The invention is directed to a method for reducing low speed pre-ignition events in a spark-ignited direct injection internal combustion engine by supplying to the sump a lubricant composition which contains an oil of lubricating viscosity and a boron-containing ashless dispersant. The ashless dispersant may be selected from succinimide compounds prepared from aliphatic or aromatic amines.

The invention provides a lubricating composition containing an antiwear agent and an oil of lubricating viscosity. The invention further relates to the use of the lubricating composition in an internal combustion engine, or a driveline device.

Lubricating composition containing an antiwear agent

A lubricant composition of an oil of lubricating viscosity, an ashless condensation reaction product of an olefin polymer, having a number average molecular weight of 2,000 to 70,000, comprising carboxylic acid or equivalent functionality grafted onto the polymer backbone, with a monoamine or a polyamine often having a single primary amino group; a succinimide dispersant; and an overbased metal detergent, in an amount such that the total base number of the lubricant composition is less than 6.5, exhibits good sludge prevention performance in a gasoline engine.

Nitrogen-functionalized olefin polymers for engine lubricants

A composition of an oil-soluble ionic detergent that does not contribute metal ions to the composition, and which comprises a quaternary non-metallic pnictogen cation and an organic anion having at least one hydrocarbyl group of sufficient length to impart oil solubility to the detergent, the detergent having a total base number (TBN) to total acid number (TAN) ratio of at least 2:1 imparts ash-free basicity to a lubricant composition.

Ashless or reduced ash quaternary detergents

A lubricating composition comprising an oil of lubricating viscosity, 1 to 1000 parts per million by weight of titanium in the form of an oil-soluble titanium-containing material, and at least one additional lubricant additive provides beneficial effects on properties such as deposit control, oxidation, and filterability in engine oils.

Titanium and molybdenum compounds and complexes as additives in lubricants

The invention provides a lubricating composition containing an aromatic compound and an oil of lubricating viscosity. The invention further relates to the use of the lubricating composition in an internal combustion engine. The invention further relates to the use of the aromatic compound as an antiwear agent.

Lubricating composition containing an aromatic compound

The invention provides a lubricating composition containing a &#x3b2;-amino compound. The invention further relates to a method of lubricating an internal combustion engine by lubricating the engine with the lubricating composition. The invention further relates to the use of the &#x3b2;-amino carbonyl compound as copper corrosion inhibitors, friction control agents, antiwear and/or extreme pressure agents.

Composition containing ester compounds and a method of lubricating an internal combustion engine

The invention provides a lubricating composition containing (a) an oil of lubricating viscosity, (b) a phosphite having at least one hydrocarbyl group that has 4 or more carbon atoms, and (c) a compound derived from a hydroxy-carboxylic acid. The invention further relates to the use of the lubricating composition in an internal combustion engine.

A lubricant composition of (a) an oil of lubricating viscosity; (b) a dispersant comprising the condensation product of a carboxylic functionalized polymer with an aromatic amine having at least 3 aromatic rings and at least one primary or secondary amino group; and (c) an overbased metal detergent comprising an oil-soluble neutral metal salt component and a metal carbonate component, provides good seal and corrosion performance. Desirably, the total amount of neutral metal salt component in the lubricant composition is at least about 0.75 percent by weight and the sulfated ash level of the lubricant composition is less than about 1.1 percent.

Low ash lubricants with improved seal and corrosion performance

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Wickliffe, OH, United States of America

Matthew D Gieselman