EP 2003189 A1 20081217 - Lubrication methods
Title (en)
Lubrication methods
Title (de)
Schmierverfahren
Title (fr)
Procédés de lubrification
Publication
Application
Priority
EP 07252371 A 20070612
Abstract (en)
A method of lubricating a two-stroke, diesel crosshead engine comprises lubricating the engine with a cylinder oil and with a system oil, which oils are different from each other, in which the system oil is an SAE 20 or SAE 30 oil, has a total base number of at least 10 mg KOH/g and comprises :- (a) a base oil; (b) at least one detergent additive in a total amount of detergent corresponding in performance, as measured by the Hot Filtration Test, to at least 1.5 % by weight of the system oil, of a calcium alkyl salicylate detergent soap in which the alkyl group is a C 12 to C 30 alkyl group; and (c) at least one anti-wear additive. The method further comprising replenishing the system oil in the engine with a top-up system oil, in which the top-up system oil has the same additives as in the system oil previously charged to the engine but has a viscosity which is lower than that of the system oil previously charged to the engine. The system oil may be prepared by mixing a low detergency system oil with a lubricant concentrate composition which comprises a base oil and at least one detergent additive.
IPC 8 full level
C10M 163/00 (2006.01); C10M 177/00 (2006.01); F01M 5/00 (2006.01); C10N 10/04 (2006.01); C10N 20/02 (2006.01); C10N 30/02 (2006.01); C10N 30/04 (2006.01); C10N 40/26 (2006.01)
CPC (source: EP)
C10M 163/00 (2013.01); C10M 177/00 (2013.01); F01M 9/00 (2013.01); C10M 2203/1006 (2013.01); C10M 2207/028 (2013.01); C10M 2207/262 (2013.01); C10M 2223/045 (2013.01); C10N 2010/04 (2013.01); C10N 2020/01 (2020.05); C10N 2020/02 (2013.01); C10N 2030/02 (2013.01); C10N 2030/04 (2013.01); C10N 2030/52 (2020.05); C10N 2040/252 (2020.05); C10N 2040/26 (2013.01)
Citation (search report)
- [X] US 2006068995 A1 20060330 - NATOLI GIUSEPPE [IT], et al
- [A] US 2003195126 A1 20031016 - BOONS CORNELIS HENDRIKUS MARIA [NL]
- [DA] EP 1728849 A1 20061206 - INFINEUM INT LTD [GB]
- [A] US 2005003972 A1 20050106 - CHAMBARD LAURENT [US], et al
Designated contracting state (EPC)
GB
Designated extension state (EPC)
AL BA HR MK RS
DOCDB simple family (publication)
DOCDB simple family (application)
EP 07252371 A 20070612