METHOD FOR PREVENTING OR REDUCING LOW SPEED PRE-IGNITION IN DIRECT INJECTED SPARK-IGNITED ENGINES WITH COBALT-CONTAINING LUBRICANT

Disclosed is a method for preventing or reducing low speed pre-ignition in in a direct injected, boosted, spark ignited internal combustion engine lubricated with a formulated oil. The formulated oil has a composition comprising at least one oil soluble or oil dispersible cobalt-containing compound....

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Main Authors ELLIOTT, IAN G, CHERPECK, RICHARD E, MARIA, AMIR GAMAL, GUNAWAN, THERESA LIANG
Format Patent
LanguageEnglish
French
Published 05.03.2024
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Abstract Disclosed is a method for preventing or reducing low speed pre-ignition in in a direct injected, boosted, spark ignited internal combustion engine lubricated with a formulated oil. The formulated oil has a composition comprising at least one oil soluble or oil dispersible cobalt-containing compound. The cobalt-containing compound is a cobalt carboxylate having the following structure (Formula 2) where a is the +2 or +3 oxidation state, RD is a branched and saturated aliphatic hydrocarbon moiety having from 3 to 30 carbon atoms, n is an integer from 1 to 3, L is absent or a ligand that saturates the coordination sphere of cobalt, and x is an integer from 0 to 6. Il est décrit un procédé permettant de prévenir ou de réduire le préallumage basse vitesse dans un moteur à combustion interne d'injection directe, propulsé et à bougie qui est lubrifié avec une huile formulée. L'huile formulée a une composition comprenant au moins un composé contenant du cobalt soluble ou dispersible dans l'huile. Le composé contenant du cobalt est un carboxylate de cobalt ayant la structure suivante : où a correspond à l'état d'oxydation +2 ou +3, RD correspond à une partie d'hydrocarbures aliphatiques ramifiés et saturés ayant de 3 à 30 atomes de carbone, n correspond à un entier de 1 à 3, L est absent ou correspond à un liant qui sature la sphère de coordination du cobalt, et x correspond à un entier de 0 à 6.
AbstractList Disclosed is a method for preventing or reducing low speed pre-ignition in in a direct injected, boosted, spark ignited internal combustion engine lubricated with a formulated oil. The formulated oil has a composition comprising at least one oil soluble or oil dispersible cobalt-containing compound. The cobalt-containing compound is a cobalt carboxylate having the following structure (Formula 2) where a is the +2 or +3 oxidation state, RD is a branched and saturated aliphatic hydrocarbon moiety having from 3 to 30 carbon atoms, n is an integer from 1 to 3, L is absent or a ligand that saturates the coordination sphere of cobalt, and x is an integer from 0 to 6. Il est décrit un procédé permettant de prévenir ou de réduire le préallumage basse vitesse dans un moteur à combustion interne d'injection directe, propulsé et à bougie qui est lubrifié avec une huile formulée. L'huile formulée a une composition comprenant au moins un composé contenant du cobalt soluble ou dispersible dans l'huile. Le composé contenant du cobalt est un carboxylate de cobalt ayant la structure suivante : où a correspond à l'état d'oxydation +2 ou +3, RD correspond à une partie d'hydrocarbures aliphatiques ramifiés et saturés ayant de 3 à 30 atomes de carbone, n correspond à un entier de 1 à 3, L est absent ou correspond à un liant qui sature la sphère de coordination du cobalt, et x correspond à un entier de 0 à 6.
Author MARIA, AMIR GAMAL
GUNAWAN, THERESA LIANG
ELLIOTT, IAN G
CHERPECK, RICHARD E
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DocumentTitleAlternate PROCEDE DE PREVENTION OU DE REDUCTION DE PRE-ALLUMAGE A FAIBLE VITESSE DANS DES MOTEURS A ALLUMAGE COMMANDE ET INJECTION DIRECTE AVEC UN LUBRIFIANT CONTENANT DU COBALT
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RelatedCompanies CHEVRON ORONITE COMPANY LLC
CHEVRON U.S.A. INC
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Snippet Disclosed is a method for preventing or reducing low speed pre-ignition in in a direct injected, boosted, spark ignited internal combustion engine lubricated...
SourceID epo
SourceType Open Access Repository
SubjectTerms 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
Title METHOD FOR PREVENTING OR REDUCING LOW SPEED PRE-IGNITION IN DIRECT INJECTED SPARK-IGNITED ENGINES WITH COBALT-CONTAINING LUBRICANT
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