A low-sulfur consumable lubricating oil composition and a...

C - Chemistry – Metallurgy – 10 – M

Patent

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C10M 171/00 (2006.01) C10M 169/04 (2006.01) F01L 9/02 (2006.01) F01L 9/04 (2006.01) F01M 9/10 (2006.01) F01M 11/04 (2006.01) F01N 3/021 (2006.01) F01N 3/20 (2006.01) F02M 25/00 (2006.01) F16N 15/00 (2006.01)

Patent

CA 2422138

A consumable lubricating oil composition, comprises a base oil and an acylated nitrogen-containing compound. It has a sulfur content of 5 to 250 ppm and is characterized by the absence of an extreme-pressure additive comprised of metal and phosphorus. This composition can be used for lubricating an internal combustion engine equipped with an exhaust gas aftertreatment device, by removing part of the lubricating oil composition from said engine and combining it with fuel which is consumed as the engine is operated, or combining it with the exhaust gas from the engine.

L'invention concerne une composition d'huile lubrifiante consommable comprenant une huile de base et un composé acylé contenant de l'azote. Cette composition présente une teneur en soufre de 5 à 250 ppm et se caractérise par l'absence d'un additif d'extrême pression composé de métal et de phosphore. Cette composition peut être utilisée pour lubrifier un moteur à combustion interne équipé d'un dispositif de post-traitement de gaz d'échappement, par élimination d'une partie de la composition d'huile lubrifiante dudit moteur et par combinaison de celle-ci avec le carburant consommé lorsque le moteur est en marche, ou par combinaison de celle-ci avec le gaz d'échappement du moteur.

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