EP 2990469 A1 20160302 - USE IN GASOLINE DIRECT INJECTION ENGINES
Title (en)
USE IN GASOLINE DIRECT INJECTION ENGINES
Title (de)
VERWENDUNG IN BENZINDIREKTEINSPRITZMOTOREN
Title (fr)
UTILISATION DANS DES MOTEURS À ESSENCE À INJECTION DIRECTE
Publication
Application
Priority
US 201462042386 P 20140827
Abstract (en)
Use in a turbo-charged gasoline direct injection (GDI) engine of a lubricant composition to reduce engine wear. The lubricant composition includes a major amount of oil of lubricating viscosity, and a minor amount of at least one highly grafted, multi-functional olefin copolymer made by reacting an acylating agent with an olefin copolymer having a number average molecular weight greater than about 1,000 in the presence of a free radical initiator to provide an acylated olefin copolymer having a degree of grafting (DOG) of the acylating agent on the olefin copolymer of at least 0.5 wt.%, and reacting the acylated olefin copolymer with an amine to provide a highly grafted, multi-functional olefin copolymer. The highly grafted, multi-functional olefin copolymer is effective to reduce engine wear in the turbo-charged GDI engine to below engine wear provided by a lubricant composition devoid of the highly grated, multi-functional olefin copolymer.
IPC 8 full level
C10M 159/12 (2006.01); C10M 169/04 (2006.01); C10N 10/08 (2006.01); C10N 10/12 (2006.01); C10N 30/06 (2006.01); C10N 40/25 (2006.01)
CPC (source: EP)
C10M 159/12 (2013.01); C10M 169/041 (2013.01); C10M 2205/022 (2013.01); C10M 2205/028 (2013.01); C10M 2207/027 (2013.01); C10M 2207/028 (2013.01); C10M 2207/26 (2013.01); C10M 2207/262 (2013.01); C10M 2207/289 (2013.01); C10M 2209/082 (2013.01); C10M 2209/086 (2013.01); C10M 2215/06 (2013.01); C10M 2215/064 (2013.01); C10M 2215/066 (2013.01); C10M 2215/22 (2013.01); C10M 2215/28 (2013.01); C10M 2217/06 (2013.01); C10M 2219/044 (2013.01); C10M 2219/046 (2013.01); C10N 2010/04 (2013.01); C10N 2010/08 (2013.01); C10N 2010/12 (2013.01); C10N 2020/04 (2013.01); C10N 2030/06 (2013.01); C10N 2030/54 (2020.05); C10N 2040/255 (2020.05); C10N 2060/09 (2020.05)
Citation (applicant)
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Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
DOCDB simple family (application)
EP 15182399 A 20150825