EP 1801191 A1 20070627 - A lubricating oil composition comprising a mixture of potassium overbased detergent and calcium overbased detergent
Title (en)
A lubricating oil composition comprising a mixture of potassium overbased detergent and calcium overbased detergent
Title (de)
Schmiermittelzusammensetzung enthaltend ein Gemisch aus überbasischem Kalium enthaltenden Detergenz und überbasischem Calcium enthaltenden Detergenz
Title (fr)
Composition lubrifiante comprenant un mélange d'un détergent surbasique de potassium et d'un détergent surbasique de calcium
Publication
Application
Priority
US 31610505 A 20051220
Abstract (en)
The present invention is directed to a lubricating oil composition comprising (a) a major amount of an oil of lubricating viscosity (b) a mixture of a potassium overbased detergent and a calcium overbased detergent (c) one or more anti-oxidants (d) one or more derivatized succinimide dispersants and (e) one or more anti-wear agents, wherein the lubricating oil composition contains no more than 0.12 weight percent phosphorus, and provided the lubricating oil composition does not contain a di-alkyl carboxylate. The present invention is also directed to a lubricating oil composition comprising (a) an oil of lubricating viscosity (b) a mixture of a potassium overbased mono-alkyl carboxylate and a calcium overbased alkylaryl sulfonate (c) an amine-containing anti-oxidant (d) an ethylene carbonate treated succinimide dispersant and (e) a phosphorus-containing anti-wear agent, wherein the lubricating oil composition contains no more than 0.1 weight percent of potassium and no more than 0.12 weight percent phosphorus and provided the lubricating oil composition does not contain a di-alkyl carboxylate. The present invention is also directed to method for reducing catalyst poisoning in exhaust after treatment systems in internal combustion engines, which comprises operating the engine with the lubricating oil compositions of the present invention.
IPC 8 full level
C10M 163/00 (2006.01); C10N 10/02 (2006.01); C10N 10/04 (2006.01); C10N 40/25 (2006.01)
CPC (source: EP US)
C10M 163/00 (2013.01 - EP US); C10M 2207/26 (2013.01 - EP US); C10N 2010/02 (2013.01 - EP US); C10N 2010/04 (2013.01 - EP US); C10N 2030/38 (2020.05 - EP US); C10N 2030/42 (2020.05 - EP US); C10N 2040/25 (2013.01 - EP US)
Citation (search report)
- [X] EP 1548091 A2 20050629 - CHEVRON ORONITE SA [FR]
- [X] EP 1104800 A2 20010606 - ORONITE JAPAN LTD [JP]
- [A] EP 1167497 A2 20020102 - CHEVRON ORONITE JAPAN LTD [JP]
- [PX] EP 1661970 A1 20060531 - INFINEUM INT LTD [GB]
Designated contracting state (EPC)
DE FR GB NL
Designated extension state (EPC)
AL BA HR MK YU
DOCDB simple family (publication)
EP 1801191 A1 20070627; CA 2568656 A1 20070620; JP 2007169639 A 20070705; SG 133554 A1 20070730; US 2007142239 A1 20070621
DOCDB simple family (application)
EP 06255569 A 20061030; CA 2568656 A 20061122; JP 2006341831 A 20061219; SG 2006088819 A 20061220; US 31610505 A 20051220