公开(公告)号：US20190127658A1

公开(公告)日：2019-05-02

申请号：US16151454

申请日：2018-10-04

Applicant: ExxonMobil Research and Engineering Company

Inventor： Candice I. PELLIGRA ,  Smruti A. DANCE ,  Jordan C. SMITH

IPC: C10M169/04 ,  C10M105/32 ,  C10M105/06 ,  C10M129/54 ,  C10M135/10 ,  C10M141/08

Abstract: A method for improving wear control of a steel surface lubricated with a lubricating oil through the generation of fast-forming tribofilms. The method includes: (i) using as the lubricating oil a formulated oil, the formulated oil having a composition comprising at least one lubricating oil base stock as a major component, and at least one detergent, as a minor component; and (ii) forming a tribofilm on the steel surface. The time for the tribofilm to reach 95% of its saturation coverage (t95,sat) on the steel surface is less than about 50 minutes, as determined by a high frequency reciprocating rig (HFRR) in accordance with a modified version of ASTM D6079. A lubricating oil including an ester base stock, an alkylated naphthalene base stock, or mixtures thereof, as a major component; and at least one detergent including an alkaline earth metal salicylate, an alkaline earth metal sulfonate, or mixtures thereof, as a minor component.