Abstract: The present application relates to the use of a lubricant composition comprising a base oil or a base oil mixture having a viscosity (BOV or base oil viscosity) of less than or equal to 4, for reducing the particulate emissions of an engine. The present application relates to the use of a lubricant composition comprising a base oil or a mixture of base oils, for reducing the particulate emissions of an engine, in which said base oil or said mixture of base oils has a kinematic viscosity, measured at 100° C., of less than or equal to 4.5 mm2/s, and in which said lubricant composition has a viscosity at 150° C. and under constant shear of greater than or equal to 2.4 mPa.s?1.

Abstract: The present patent application relates to the use, as detergent additive in a lubricating composition intended for a motorization system, of a spiro compound of formula (I) in which M is an atom selected from boron and aluminum; R, independently of one another, represent a hydrocarbon group comprising from 1 to 50 carbon atoms; and n1 and n2, independently of one another, equal 0, 1 or 2. It also relates to a lubricating composition intended for the lubrication of a motorization system, comprising one or more base oils and at least one spiro compound of formula (I), and to a process for lubricating a motorization system using such a composition.

Abstract: Carbodiimide for use as an additive in lubricants intended for drive device systems for improved elastomer compatibility The present invention relates to a lubricant composition intended for a drive system, comprising at least one or more base oils, at least one carbodiimide additive and at least one basic organic additive improving TBN; as well as a process for lubricating a drive system using such a lubricating composition. It also relates to the use of at least one carbodiimide additive in a lubricant composition intended for a drive system, to improve its compatibility with elastomers.

Abstract: The present patent application relates to the use, as detergent additive in a lubricating composition intended for a motorization system, of a spiro compound of formula (I) in which M is an atom selected from boron and aluminum; R, independently of one another, represent a hydrocarbon group comprising from 1 to 50 carbon atoms; and n1 and n2, independently of one another, equal 0, 1 or 2. It also relates to a lubricating composition intended for the lubrication of a motorization system, comprising one or more base oils and at least one spiro compound of formula (I), and to a process for lubricating a motorization system using such a composition.

Abstract: Lubricating composition for preventing or reducing abnormal combustion in an engine The present patent application relates to the use of a lubricating composition comprising one or more base oils and at least one spiro compound with the following formula (I) in which M is an atom selected from boron and aluminum; R, independently of one another, represents a hydrocarbon group comprising from 1 to 50 carbon atoms; and n1 and n2, independently of one another, equal 0, 1 or 2; in order to prevent and/or reduce the abnormal consumption of fuel in an engine lubricated by means of said lubricating composition, in particular in a gas-powered engine.

Abstract: The present invention relates to the use of a lubricant composition comprising (i) at least one boron derivative; and (ii) at least one base oil, for preventing and/or reducing pre-ignition, in particular at low speed, in a vehicle engine, wherein said composition is used during at least one change interval without the addition of a new lubricant composition, the content of boron in the composition being between 150 ppm and 350 ppm by weight.

Abstract: The present invention relates to the use of a lubricant composition comprising (i) at least one dithiocarbamate compound; and (ii) at least one base oil, for preventing and/or reducing pre-ignition, in particular at low speed, in a vehicle engine, wherein said composition is applied during at least one change interval without the addition of a new lubricant composition, the content of dithiocarbamate compound being less than or equal to 1% by weight relative to the total weight of the lubricant composition.

Abstract: The disclosure relates to the use of a lubricating composition including at least one base oil and at least one organic compound for reducing, or even eliminating, knocking in the engine of vehicles, preferably motor vehicles.

Abstract: The present disclosure relates to a lubricant composition including at least one base oil and at least one organic compound. The lubricant composition thus makes it possible to reduce, or even to eliminate knock in a vehicle engine, preferably a motor vehicle engine.