摘要:
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.
摘要:
Thioether-substituted phenols that are the reaction product of a thioether-substituted alcohol or thioether-substituted amine and a phenol with at least one pendant acyl group and have a ratio of sulfur groups to phenol groups of at least 1:1 and uses for thioether-substituted phenols. Methods of lubricating an internal combustion engine by contacting the internal combustion engine with a lubricating composition comprising a thioether-substituted phenol. Methods of reducing deposit formation and/or corrosion in an engine using a lubricating composition comprising a thioether-substituted phenol.
摘要:
La présente demande concerne une méthode de lubrification séparée d'un système de motorisation pour véhicule automobile, ledit système comprenant un compresseur et un moteur à combustion interne comprenant un haut-moteur et un bas-moteur accouplés, ladite méthode comprenant : - la lubrification du bas-moteur avec une composition lubrifiante CL1 présentant un grade, selon la classification SAEJ300, défini par la formule (X)W-(Y) dans laquelle X représente 0 ou 5 et Y représente 4, 8, 12, 16 ou 20; - la lubrification du haut-moteur avec une composition lubrifiante CL2 différente de la composition lubrifiante CL1; et - la lubrification du compresseur avec une composition lubrifiante CL2 ou avec une composition lubrifiante CL3 différente des compositions lubrifiantes CL1 et CL2.
摘要:
This invention relates to the use of a metallic or non-metallic detergent which is a hydrocarbyl-substituted salicylic acid or a derivative thereof in a non-aqueous lubricant composition as an inhibitor of lead corrosion associated with ashless, organic ester, anti- wear additives and/or friction modifiers.
摘要:
Lubricating oils and oil additive packages that reduce the amount of ash generated by an internal combustion engine are described. Reducing the amount of ash generated by the internal combution engines significantly aids in the maintenance of the catalytic exhaust system, which would otherwise exhibit a decrease in the treatment efficiency of exhaust gas emissions. A low ash catalytic exhaust system of the invention includes an engine oil used by an internal combustion engine associated with the low ash catalytic exhaust system, wherein the engine oil comprises a base oil and an additive package. The additive package includes a hindered secondary amine detergent, an anti-wear additive in the amount of about 0.1% to about 5% by weight of the engine oil, and at least one epoxide as a seal compatibility additive. Furthermore, the low ash catalytic exhaust system includes a monolithic honeycomb with a catalytic metal.
摘要:
A method for improving wear control, while maintaining or improving fuel efficiency, in an engine or other mechanical component lubricated with a lubricating oil by using as the lubricating oil a formulated oil. The formulated oil has a composition including a lubricating oil base stock as a major component, and (i) at least one transition metal salt of a carboxylic acid (e.g., zinc stearate) or (ii) a mixture of at least one transition metal salt of a carboxylic acid (e.g., zinc stearate) and at least one detergent (i.e., an alkali metal or alkaline earth metal salt of an organic acid, or an alkali metal or alkaline earth metal salt of an inorganic acid, or an alkali metal or alkaline earth metal salt of a phenol, or mixtures thereof (e.g., calcium salicylate and/or magnesium sulfonate), as a minor component. The lubricating oils are useful in internal combustion engines.
摘要:
The disclosed technology provides a lubricating composition comprising an oil of lubricating viscosity and 0.01 wt % to 10 wt % of an oxyalkylated aromatic polyol compound, wherein the aromatic compound has at least one alkoxy group represented by -OR 1 group, R 1 is hydroxyalkyl, or a (poly)ether group, and either: at least one hydroxyl group, or at least one alkoxy group represented by -OR 1 group, where R 1 is alkyl, or a (poly)ether group, or at least one oxyalkyl group represented by -OR 1 , where R 1 is hydroxyalkyl or a (poly)ether group. The disclosed technology further relates to a method of lubricating a mechanical device (such as an internal combustion engine) with the lubricating composition. The disclosed technology further relates to the use of the oxyalkylated aromatic polyol compound in the lubricating composition to a passenger car internal combustion engine at least one of (i) control of fuel economy, (ii) control of corrosion, (iii) cleanliness, and (iv) control of bore wear.
摘要:
Disclosed herein are marine diesel cylinder lubricating oil compositions comprising (a) a major amount of one or more Group II basestocks, and(b) a detergent composition comprising (i) one or more alkaline earth metal salts of an alkyl-substituted hydroxyaromatic carboxylic acid having a total base number (TBN) greater than 250, and (ii) one or more high over based alkyl aromatic sulfonic acids or salts thereof; wherein the aromatic moiety of the alkyl aromatic sulfonic acids or salts thereof contains no hydroxyl groups; and wherein the marine diesel cylinder lubricating oil composition has a TBN of about 5 to about 120.