EP 0889112 A1 19990107 - LUBRICATING OIL COMPOSITION FOR AUTOMATIC TRANSMISSIONS
Title (en)
LUBRICATING OIL COMPOSITION FOR AUTOMATIC TRANSMISSIONS
Title (de)
SCHMIERÖLZUSAMMENSETZUNG FÜR AUTOMATISCHES GETRIEBE
Title (fr)
COMPOSITION D'HUILE LUBRIFIANTE POUR TRANSMISSIONS AUTOMATIQUES
Publication
Application
Priority
- JP 9702025 W 19970611
- JP 29808296 A 19961022
Abstract (en)
The present invention relates to a lubricating oil composition for an automatic transmission obtainable by the addition to a base oil of: a compound represented by general formula (I), <CHEM> (wherein in general formula (I), R<1> and R<2> may be identical or different from each other and are each hydrocarbon groups having 5 or more carbons; R<3> is a hydrocarbon group having 1 to 5 carbons; R<4> is a hydrogen atom or a hydrocarbon group having 1 to 20 carbons, wherein said hydrocarbon group may include an amino group and/or amide bond; and n is an integer of 0 to 10); 0.02% by weight to 5% by weight of at least one metal salt of an organic acid selected from the group consisting of sulfonates, phenates, salicylates and phosphonates; and at least one type selected from the group consisting of phosphate esters, acid phosphate esters, phosphite esters and acid phosphite esters. The present invention also provides a method of lubricating an automatic transmission fitted with a continuously slipping torque converter clutch using said automatic transmission lubricating oil composition; and an automatic transmission filled with said automatic transmission lubricating oil composition. A lubricating oil composition for an automatic transmission is used in an automobile automatic transmission provided with a continuously slipping torque converter clutch. It exhibits the remarkable effects of sufficient transmission torque capacity and high anti-shudder property even when the lock-up mechanism is operated at low speeds.
IPC 1-7
IPC 8 full level
C10M 133/16 (2006.01); C10M 133/56 (2006.01); C10M 141/10 (2006.01); C10M 163/00 (2006.01)
CPC (source: EP)
C10M 129/54 (2013.01); C10M 133/16 (2013.01); C10M 133/56 (2013.01); C10M 135/10 (2013.01); C10M 137/04 (2013.01); C10M 137/105 (2013.01); C10M 137/12 (2013.01); C10M 141/10 (2013.01); C10M 159/20 (2013.01); C10M 159/22 (2013.01); C10M 159/24 (2013.01); C10M 163/00 (2013.01); C10M 2207/026 (2013.01); C10M 2207/027 (2013.01); C10M 2207/028 (2013.01); C10M 2207/144 (2013.01); C10M 2207/146 (2013.01); C10M 2207/26 (2013.01); C10M 2207/262 (2013.01); C10M 2209/084 (2013.01); C10M 2215/04 (2013.01); C10M 2215/064 (2013.01); C10M 2215/08 (2013.01); C10M 2215/082 (2013.01); C10M 2215/086 (2013.01); C10M 2215/12 (2013.01); C10M 2215/122 (2013.01); C10M 2215/26 (2013.01); C10M 2215/28 (2013.01); C10M 2217/046 (2013.01); C10M 2217/06 (2013.01); C10M 2219/044 (2013.01); C10M 2219/046 (2013.01); C10M 2219/089 (2013.01); C10M 2223/04 (2013.01); C10M 2223/041 (2013.01); C10M 2223/042 (2013.01); C10M 2223/047 (2013.01); C10M 2223/06 (2013.01); C10M 2223/061 (2013.01); C10M 2223/065 (2013.01); C10N 2040/02 (2013.01); C10N 2040/04 (2013.01); C10N 2040/042 (2020.05); C10N 2040/044 (2020.05); C10N 2040/046 (2020.05); C10N 2040/08 (2013.01)
Citation (search report)
See references of WO 9817747A1
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
DOCDB simple family (application)
EP 97927369 A 19970611; JP 9702025 W 19970611