Low ash stationary gas engine lubricant

Details Low ash stationary gas engine lubricant Low ash stationary gas engine lubricant

C - Chemistry, Metallurgy

10

M

C10M 163/00 (2006.01) C10M 129/76 (2006.01) C10M 133/56 (2006.01) C10M 137/10 (2006.01) C10M 159/22 (2006.01) C10M 159/24 (2006.01)

Patent

CA 2486404

A low-ash, low-phosphorus lubricant composition suitable for use in a stationary gas engine includes an oil of lubricating viscosity, 1.5 to 8 percent of a succinimide dispersant, 0.8 to 4.0 percent of a hindered, ester- substituted phenol antioxidant, and at least one metal-containing sulfonate detergent or metal-containing phenate detergent, in an amount which provides 1.1 to 2.1 percent by weight of said sulfonate or phenate moieties exclusive of the weight of the metal moieties. The lubricant contains up to 0.08 percent by weight phosphorus and up to 1.25 percent sulfated ash.

L'invention concerne une composition de lubrifiant à faible teneur en cendres et en phosphore apte à être utilisée dans un moteur à essence fixe, qui comprend: une huile présentant une viscosité de lubrification; entre 1,5 et 8 % d'un dispersant de type succinimide; entre 0,8 et 4,0 % d'un antioxydant de type phénol encombré à substitution ester; et au moins un détergent sulfonate contenant un métal ou un détergent phénate contenant un métal, en quantité qui permet d'obtenir entre 1,1 et 2,1 % en poids desdits fragments sulfonate ou phénate à l'exception du poids des fragments de métal. Ledit lubrifiant contient jusqu'à 0,08 % en poids de phosphore et jusqu'à 1,25 % de cendres sulfatées.

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