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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Format | Patent |
Language | English 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. |
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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... |
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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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