The Lubrizol Corporation

Union Camp Corporation

Ewa A Bardasz

Virginia A Carrick

William D Abraham

Gordon D Lamb

John Kent Pudelski

Scott T Jolley

Richard L Veazey

Christopher R Sgarlata

Paul E Adams

Matthew D Gieselman

Jody A Kocsis

Thomas F Steckel

Deborah A Langer

David E Ripple

Marvin Bradford DeTar

Renee A Eveland

Jack C Kelley

William K Cleveland

Douglas M Barr

Melody Wilk

Daniel H Heath

Thomas T Curtis

Saleem Al-Ahmad

Sheri L Blystone

William B Chamberlain

Peter B Thomson

Melody A Wilk

William B Chamberlin

The present invention relates to methods of using a low sulfur, low phosphorus, low-ash, zinc free consumable lubricating composition in an internal combustion engine equipped with a pilot ignition system, where the composition comprises: an oil of lubricating viscosity; a high TBN succinimide dispersant and where the lubricant composition overall has a sulfated ash value of up to about 0.2, a phosphorus content of up to about 50 to about 800 ppm and a sulfur content of up to about 0.4 percent by weight.

Method of operating an engine using an ashless consumable lubricant

A lubricant composition of a synthetic oil of lubricating viscosity, 3 to 6 percent by weight of a nitrogen-containing dispersant, 1 to 2.5 weight percent of an overbased magnesium detergent, 1 to 5 weight percent of an antioxidant; and 0.25 to 1.5 weight percent of a friction modifier is useful for lubricating a hydrogen-fueled engine. The composition will typically contain less than 0.01 weight percent Ca, less than 0.01 weight percent Zn, less than 0.06 weight percent P, and will have a sulfated ash level of less than 1.2%.

Lubricant for hydrogen-fueled engines

An internal combustion engine with a catalyst-containing exhaust-gas aftertreatment device is lubricated with a composition of a base oil; and a zinc salt of a mixture of phosphorus-containing compounds having hydrocarbyl groups Rand Rwhere the average total number of carbon atoms in Rplus Rfor the mixture of phosphorus-containing compounds is at least 9.5, where 4 to 30 weight percent of such groups contain 2 to 4 carbon atoms and where in less than 8 mole percent of the phosphorus-containing molecules in the mixture of phosphorus-containing compounds each of Rand Rcontain 2 to 4 carbon atoms.

Method of lubricating an internal combustion engine and improving the efficiency of the emissions control system of the engine

Lubricant compositions comprising (a) an oil of lubricating viscosity; and (b) at least one non-metal-containing additive, comprising a nitrogen-containing dispersant having a total base number of at least about 90 are useful for lubricating an internal combustion engine. The lubricants have less than 1.0% sulfated ash and a total base number of at least about 8.5, and at least 30% of the total base number of the composition is provided by non-metal-containing additives. The lubricants exhibit a high TBN without deterioration of elastomeric seals.

Nitrogen-containing dispersant as an ashless TBN booster for lubricants

Methods for regenerating or improving the regeneration of a particulate filter and for improving the performance of a particulate filter during the operation of an internal combustion engine comprise lubricating the engine with a lubricant composition comprising additives that when combusted can form an ash deposit in the filter. The methods are particularly useful for diesel particulate filters on diesel engines that are equipped with an exhaust gas recirculation system.

Methods for regeneration and performance of a particulate filter of an internal combustion engine

The invention relates to the use of an emulsified fuel in combination with an engine oil that shows a synergistic effect in reducing emissions such as particulate matter, hydrocarbons and/or nitrogen oxides (NO, NO, NO, collectively NOx) and/or reducing wear from an engine.

Emulsified fuels and engine oil synergy

Lubricating oil composition

A sump-lubricated internal combustion engine equipped with exhaust gas recycle, lubricated with (a) an oil of lubricating viscosity, (b) 0.05 to 1 percent by weight of an amide of an aliphatic carboxylic acid, and (c) at least one additional dispersant, detergent, or anti-wear agent, exhibits reduced temperature of the lubricant in the sump.

Use of an amide to reduce lubricant temperature

A low sulfate ash lubricating oil composition comprising an oil of lubricating viscosity, 0.1 to 3.0% of a calcium overbased acidic material, 0.1 to 2.0% of a magnesium overbased acidic material, and at least 0.5% of a combination of an alkylene-coupled hindered phenol antioxidant and an antioxidant other than an alkylene-coupled hindered phenol antioxidant, is particularly useful for lubricating stationary gas engines.

Low ash lubricant compositions containing multiple overbased materials and multiple antioxidants

This invention relates to a lubricating oil composition, comprising: (A) a base oil; (B) an alkali or alkaline earth metal salt of a saligenin derivative; (C) an alkali or alkaline earth metal salt of a hydrocarbon-substituted salicylic acid, and (D) a metal salt of a phosphorus-containing compound.

Lubricants which comprise, as an additive a salt of the reaction product of (i) glyoxylic acid or a hydrocarbyl substituted glyoxylic acid and (ii) a hydroxyaromatic compound, at least a portion of the molecules of which are alkyl-substituted, are useful for lubricating ceramic-containing engines, high temperature engines, and natural gas-fueled engines. Particularly useful additives are those in which the hydroxyaromatic compound is a dialkyl phenol containing a t-butyl group in an ortho position.

Metal salts of lactones as lubricant additives

Ceramic-containing engines are lubricated by compositions containing synthetic ester base stock. Suitable esters include those prepared from iso- and neo-acids of medium chain length and polyols including inositol.

Lubricants containing carboxylic esters from polyhydroxy compounds,

A composition of an oil of lubricating viscosity, an antioxidant, an anti-nitration agent, and optionally a borated product of an epoxide or the reactive equivalent of an epoxide, provides a desirable lubricant for diesel or natural gas-fueled engines. The composition is substantially free from metals and preferably substantially free from phosphorus. The amount of the antioxidant the anti-initration agent are sufficient to reduce the amount of varnish formation in a natural gas engine.

Growing community of inventors

Mentor, OH, United States of America

Ewa A Bardasz