公开(公告)号：US10781397B2

公开(公告)日：2020-09-22

申请号：US16010634

申请日：2018-06-18

Applicant: ExxonMobil Research and Engineering Company

Inventor： Beatrice M. Gooding ,  Alan M. Schilowitz ,  Andrew R. Konicek ,  Douglas E. Deckman ,  Michael R. Douglass

IPC: C10M169/04 ,  C10M129/46 ,  C10M129/54 ,  C10M135/10 ,  C10M137/10 ,  C10M107/02 ,  C10M129/40 ,  C10N30/04 ,  C10N30/06 ,  C10N30/00 ,  C10N40/25

Abstract: A method for improving wear control, while maintaining or improving solubility and fuel efficiency, in an engine or other mechanical component lubricated with a lubricating oil by using as the lubricating oil a formulated oil. The formulated oil has a composition including a lubricating oil base stock as a major component; and at least one metal salt of a carboxylic acid, as a minor component; wherein the metal salt of the carboxylic acid contains no sulfur or phosphorus; wherein the metal is selected from the group consisting of palladium (Pd), silver (Ag), gold (Au), zinc (Zn), and mixtures thereof; wherein the carboxylic acid is selected from the group consisting of an aliphatic carboxylic acid, a cycloaliphatic carboxylic acid, an aromatic carboxylic acid, and mixtures thereof; wherein the molar ratio of (zinc+palladium+silver+gold)/phosphorus of said formulated oil is greater than 1.0. The lubricating oils are useful in internal combustion engines.