USE OF A MOLYBDENUM-CONTAINING ADDITIVE AND A BORON-CONTAINING ADDITIVE IN A LUBRICATING COMPOSITION FOR REDUCING LOW-SPEED PRE-IGNITION (LSPI) EVENTS IN A DIRECT-INJECTION SPARK-IGNITION COMBUSTION ENGINE

USE OF A MOLYBDENUM-CONTAINING ADDITIVE AND A BORON-CONTAINING ADDITIVE IN A LUBRICATING COMPOSITION FOR REDUCING LOW-SPEED PRE-IGNITION (LSPI) EVENTS IN A DIRECT-INJECTION SPARK-IGNITION COMBUSTION ENGINE

A method of reducing low-speed pre-ignition (LSPI) in a direct-injected spark-ignited internal combustion engine comprising lubricating the crankcase of the engine with a composition comprising a combination of a molybdenum-containing additive and a boron-containing additive. Preferably, the composi...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: SHAW, ROBERT WILLIAM, CRICK, SIMON ROBERT, FOSTER, CARINA
Format: Patent
Sprache:eng ; fre
Schlagworte:
CHEMISTRY
FUELS
LUBRICANTS
LUBRICATING COMPOSITIONS
METALLURGY
PEAT
PETROLEUM, GAS OR COKE INDUSTRIES
TECHNICAL GASES CONTAINING CARBON MONOXIDE
USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATINGINGREDIENTS IN A LUBRICATING COMPOSITION
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Beschreibung
Zusammenfassung:A method of reducing low-speed pre-ignition (LSPI) in a direct-injected spark-ignited internal combustion engine comprising lubricating the crankcase of the engine with a composition comprising a combination of a molybdenum-containing additive and a boron-containing additive. Preferably, the composition comprises a calcium detergent providing a calcium content of at least 0.08 wt.%, based on the weight of the lubricating oil composition. Une méthode pour réduire le préallumage basse vitesse (LSPI) dans un moteur à combustion interne allumé par étincelle et à injection directe comprend la lubrification du carter de moteur à laide dune composition présentant une combinaison dun additif contenant du molybdène et dun additif contenant du bore. De préférence, la composition comprend un détergent au calcium, dont la teneur en calcium est dau moins 0,08 % massique, en fonction du poids de la composition dhuile de lubrification.