Marine diesel cylinder lubricant composition

Details Marine diesel cylinder lubricant composition Marine diesel cylinder lubricant composition

C - Chemistry, Metallurgy

10

M

C10M 129/26 (2006.01) C10L 10/00 (2006.01) C10M 129/50 (2006.01) C10M 159/20 (2006.01) C10M 159/22 (2006.01) C10M 169/04 (2006.01)

Patent

CA 2471202

A marine diesel cylinder lubricant composition for a marine diesel engine running on fuel having a sulphur content of less than 1.5%, the composition having a total base number, as determined according to ASTM D2896, of more than 30 and less than 70, and comprising at least 40 wt% of an oil of lubricating viscosity, and at least one detergent prepared from at least two surfactants, one of which is a salicylate. The marine diesel cylinder lubricant composition demonstrates good ability to reduce deposit formation, especially on pistons. The marine diesel cylinder lubricant composition also demonstrates good lubrication at temperatures above 250°C.

Il s'agit d'une composition lubrifiante pour cylindre de moteur diesel de marine fonctionnant avec du carburant dont la teneur en soufre est inférieure à 1,5 %. Cette composition présente un indice d'alcalinité total, déterminé selon l' ASTM D2896, supérieur à 30 et inférieur à 70, et elle comprend au moins 40 % par poids d'une huile de viscosité à lubrification, et au moins un détergent préparé à partir de deux surfactants au minimum, dont l'un est un salicylate. Ladite composition présente une bonne aptitude à réduire la formation de dépôts, en particulier sur les pistons. Cette composition offre aussi une bonne lubrification au températures supérieures à 250 degrés Celcius.

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