Zinc-free continuously variable transmission fluid

Details Zinc-free continuously variable transmission fluid Zinc-free continuously variable transmission fluid

C - Chemistry, Metallurgy

10

M

C10M 141/10 (2006.01)

Patent

CA 2374996

A zinc-free lubricating composition for lubricating a continuously variable transmission, the lubricating composition comprising a mixture of a major amount of a lubricating oil and an effective amount of a performance enhancing additive combination comprising: (a) an ashless dispersant; (b) at least one organic phosphite; (c) a calcium detergent; (d) one or more friction modifiers selected from the group consisting of: succinimides and ethoxylated amines; and (e) a primary amide of a long chain carboxylic acid.

L'invention concerne une composition lubrifiante dépourvue de zinc destinée à lubrifier une transmission à changement de vitesse continu, ladite composition lubrifiante comprend un mélange présentant une quantité principale d'huile lubrifiante et une quantité efficace d'une combinaison d'additifs améliorant le rendement, comprenant: (a) un agent de dispersion sans cendres; (b) au moins un phosphite organique; (c) un détergent à base de calcium; (d) un ou plusieurs modificateurs de frottement choisis dans le groupe constitué de succinimides et d'amines éthoxylées sélectionnées; et (e) un amide primaire d'un acide carboxylique à chaînes longues.

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