公开(公告)号：US20190187119A1

公开(公告)日：2019-06-20

申请号：US16212117

申请日：2018-12-06

Applicant: ExxonMobil Research and Engineering Company

Inventor： Gary CHRISTENSEN ,  Nabila BRABEZ ,  Willie A. GIVENS, JR. ,  Kevin L. CROUTHAMEL ,  Andrew D. SATTERFIELD

IPC: G01N33/28

CPC classification number: G01N33/287 ,  C10M175/0091 ,  C10N2210/02 ,  C10N2230/52 ,  C10N2240/102 ,  C10N2270/00 ,  G01N33/2876 ,  G01N33/2888

Abstract: Systems and methods are provided for estimating the total base number of used oil in an engine. The systems and methods can involve characterizing the sulfur content and at least one other element content of the oil both before introduction into the engine and after passing through an engine cylinder during combustion. Depending on the aspect, a total base number of the oil prior to use can also be measured, or the total base number before use can be estimated based on the at least one element content.

公开(公告)号：US20190016983A1

公开(公告)日：2019-01-17

申请号：US16013230

申请日：2018-06-20

Applicant: ExxonMobil Research and Engineering Company

Inventor： Nabila BRABEZ ,  Kevin L. CROUTHAMEL ,  John T. FOGARTY ,  Andrew D. SATTERFIELD

IPC: C10M107/02 ,  C10M129/50

CPC classification number: C10M107/02 ,  C10M129/50 ,  C10M169/04 ,  C10M2203/1006 ,  C10M2203/1025 ,  C10M2203/1085 ,  C10M2205/0265 ,  C10M2205/0285 ,  C10M2205/173 ,  C10M2207/028 ,  C10M2207/262 ,  C10M2209/0845 ,  C10M2219/046 ,  C10M2219/068 ,  C10M2223/045 ,  C10N2210/01 ,  C10N2220/022 ,  C10N2230/02 ,  C10N2230/04 ,  C10N2230/06 ,  C10N2230/10 ,  C10N2230/52 ,  C10N2230/54 ,  C10N2230/56 ,  C10N2240/102 ,  C10N2210/06 ,  C10N2210/02

Abstract: Provided are marine lubricating oils including from 15 to 95 wt % of a Group III base stock having a kinematic viscosity at 100 deg. C of 4 to 12 cSt, 0.5 to 55 wt % of cobase stock having a kinematic viscosity at 100 deg. C of 29 to 1000 cSt, 0.1 to 2.0 wt % of a molydithiocarbamate friction modifier, 0.1 to 2.0 wt % of a zinc dithiocarbamate anti-wear additive, and 2 to 30 wt % of other lubricating oil additives. The cobase stock is selected from the group consisting of a Group I, a Group IV, a Group V and combinations thereof Also provided are methods of making and using the marine lubricating oils.