公开(公告)号：US20190203144A1

公开(公告)日：2019-07-04

申请号：US16207553

申请日：2018-12-03

Applicant: ExxonMobil Research and Engineering Company

Inventor： Arben JUSUFI ,  Alan M. SCHILOWITZ ,  Aditya JAISHANKAR ,  Andrew R. KONICEK ,  Ko ONODERA

IPC: C10M137/10 ,  C10M135/18 ,  C10M169/04

CPC classification number: C10M137/10 ,  C10M135/18 ,  C10M139/00 ,  C10M169/04 ,  C10M2203/003 ,  C10M2219/068 ,  C10M2223/045 ,  C10M2227/066 ,  C10N2210/06 ,  C10N2220/082 ,  C10N2230/06 ,  C10N2230/56 ,  C10N2250/121 ,  C10N2260/04

Abstract: Methods are provided for lubricating oxygenated diamond-like carbon surfaces to reduce friction while reducing or minimizing wear on the surface. A diamond-like carbon surface layer having a surface ratio of oxygen to carbon of 1:15 or more can be lubricated using a lubricant oil that includes a molybdenum-based friction modifier additive, a tungsten-based friction modifier additive, or a combination thereof. The Mo-based friction modifier (and/or other friction modifier based on a Group VI metal) can be selected based on the Gibbs free energy of adsorption (ΔG) for the friction modifier on an oxygenated diamond-like carbon surface. Use of a Group VI metal-based friction modifier having a ΔG of adsorption with a sufficiently large magnitude can reduce friction at the surface of the oxygenated diamond-like carbon while causing a reduced or minimized amount of wear during lubrication.

公开(公告)号：US20170022441A1

公开(公告)日：2017-01-26

申请号：US15115766

申请日：2014-11-20

Applicant: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Ko ONODERA ,  Shuzo NEMOTO ,  Tomohiro KATO ,  Kosuke FUJIMOTO ,  Minoru YAMASHITA

IPC: C10M141/12

CPC classification number: C10M141/12 ,  C10M2203/1025 ,  C10M2205/02 ,  C10M2205/0285 ,  C10M2207/028 ,  C10M2207/262 ,  C10M2209/084 ,  C10M2215/28 ,  C10M2215/30 ,  C10M2219/046 ,  C10M2219/068 ,  C10M2223/045 ,  C10M2227/066 ,  C10N2210/02 ,  C10N2210/06 ,  C10N2220/021 ,  C10N2220/022 ,  C10N2230/04 ,  C10N2230/12 ,  C10N2230/40 ,  C10N2230/42 ,  C10N2240/10 ,  C10N2240/104 ,  C10N2260/14

Abstract: A lubricating oil composition which can reduce the occurrence frequency of LSPI and which can ensure detergency. The lubricating oil composition which includes a lubricant base oil, a compound having calcium and/or magnesium, a compound having molybdenum and/or phosphorus, and an ashless dispersant having nitrogen and which satisfies X≦−0.85 and Y≧0.18 (wherein X is calculated according to formula (1): X=([Ca]+0.5[Mg])×8−[Mo]×8−[P]×30 and Y is calculated according to formula (2): Y=[Ca]+1.65[Mg]+[N]). The lubricating oil composition for use in an internal combustion engine, more particularly, a lubricating oil composition for use in a supercharged gasoline engine.

Abstract translation: 润滑油组合物，其可以降低LSPI的发生频率并且可以确保去污力。 包含润滑油基础油，具有钙和/或镁的化合物，具有钼和/或磷的化合物和具有氮的无灰分散剂的润滑油组合物，其满足X≤-0.85和Y≥0.18（其中X为 根据式（1）计算：X =（[Ca] +0.5 [Mg]）×8- [Mo]×8- [P]×30，Y根据式（2）计算：Y = [Ca] +1.65 [Mg] + [N]）。 用于内燃机的润滑油组合物，更具体地说，用于增压汽油发动机中的润滑油组合物。