EP 1462509 A3 20050622 - Lubricating oil compositions and methods for improving fuel economy in an internal combustion engine using same
Title (en)
Lubricating oil compositions and methods for improving fuel economy in an internal combustion engine using same
Title (de)
Schmiermittelzusammensetzungen und Methoden zur Verbesserung der Kraftstoffeinsparung in einem Verbrennungsmotor
Title (fr)
Compositions d'huiles lubrifiantes et méthode pour améliorer les économies de carburant dans un moteur à combustion interne
Publication
Application
Priority
US 40217003 A 20030328
Abstract (en)
[origin: EP1462509A2] A lubricating oil composition is provided which comprises (a) an oil of lubricating viscosity having a kinematic viscosity of about 2 to 10.5 cSt at 100 DEG C and (b) a friction modifying effective amount of an ashless friction modifier comprising a reaction product of a C4 to about C75 fatty acid ester and an alkanolamine. Particularly preferred is a lubricating oil composition comprising (a) an oil of lubricating viscosity having a kinematic viscosity of about 2 to 10.5 cSt at 100 DEG C and comprising about 55 to about 85 weight percent of a first lubricating oil, and about 15 to about 45 weight percent of a second lubricating oil wherein the kinematic viscosity of the second lubricating oil is lower than the kinematic viscosity of the first lubricating oil at 100 DEG C; and (b) about 0.5 to about 5.0 weight percent, based on the total weight of the lubricating oil composition, of an ashless friction modifier comprising a reaction product of a C4 to about C75 fatty acid ester and an alkanolamine.
IPC 1-7
IPC 8 full level
C10M 129/08 (2006.01); C10M 129/38 (2006.01); C10M 129/40 (2006.01); C10M 129/76 (2006.01); C10M 133/08 (2006.01); C10M 133/16 (2006.01); C10M 159/08 (2006.01); C10M 159/12 (2006.01); C10M 169/04 (2006.01); C10N 20/02 (2006.01); C10N 30/00 (2006.01); C10N 30/06 (2006.01); C10N 40/25 (2006.01)
CPC (source: EP US)
C10M 159/12 (2013.01 - EP US); C10M 169/042 (2013.01 - EP US); C10M 2207/022 (2013.01 - EP US); C10M 2207/126 (2013.01 - EP US); C10M 2207/283 (2013.01 - EP US); C10M 2207/289 (2013.01 - EP US); C10M 2207/40 (2013.01 - EP US); C10M 2215/042 (2013.01 - EP US); C10M 2215/082 (2013.01 - EP US); C10N 2030/02 (2013.01 - EP US); C10N 2030/06 (2013.01 - EP US); C10N 2030/54 (2020.05 - EP US); C10N 2040/25 (2013.01 - EP US)
Citation (search report)
- [X] US 4921624 A 19900501 - KAMMANN JR KARL P [US]
- [X] EP 0335702 A2 19891004 - ETHYL PETROLEUM ADDITIVES INC [US]
- [X] US 4889647 A 19891226 - ROWAN EUGENE V [US], et al
- [A] US 5942475 A 19990824 - SCHLOSBERG RICHARD H [US], et al
- [A] US 4439336 A 19840327 - ZAWESKI EDWARD F [US]
- [A] US 2003009930 A1 20030116 - DEROSA THOMAS F [US], et al
- [A] COCKBILL, B.; BENNETT, J.: "The Effects of Crankcase Oil Viscosity on Engine Friction at Low Temperatures", SAE TECHNICAL PAPER SERIES, no. 2000-01-2052, 22 June 2002 (2002-06-22), XP002326183
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 1462509 A2 20040929; EP 1462509 A3 20050622; CA 2461894 A1 20040928; JP 2004300440 A 20041028; SG 116537 A1 20051128; US 2004192565 A1 20040930
DOCDB simple family (application)
EP 04251795 A 20040326; CA 2461894 A 20040325; JP 2004097114 A 20040329; SG 200401884 A 20040326; US 40217003 A 20030328