EP 2876152 A4 20160309 - LUBRICATING OIL COMPOSITION FOR CONTINUOUSLY VARIABLE TRANSMISSION
Title (en)
LUBRICATING OIL COMPOSITION FOR CONTINUOUSLY VARIABLE TRANSMISSION
Title (de)
SCHMIERMITTELZUSAMMENSETZUNG UND STUFENLOSES GETRIEBE
Title (fr)
COMPOSITION D'HUILE LUBRIFIANTE POUR TRANSMISSION QUI VARIE EN CONTINU
Publication
Application
Priority
- JP 2012161270 A 20120720
- JP 2013069266 W 20130716
Abstract (en)
[origin: EP2876152A1] The present invention provides a lubricating oil composition for a continuously variable transmission having a viscosity that is low enough to exhibit fuel saving properties but maintaining the viscosity required for a lubricating oil composition through the period of use in a system and also a higher metal-to-metal friction coefficient to ensure a high power transmitting capacity and providing a wet clutch friction characteristics and anti-shudder properties required for a transmission as well as having a low traction coefficient to achieve further improved fuel saving properties. The composition comprises a base oil having been adjusted so that the product (EC×V40) of the mass percent (EC (mass%)) of a saturated cyclic component on the total base oil mass basis and the 40°C kinematic viscosity (V40 (mm 2 /s)) is 500 or less and the 100°C kinematic viscosity is from 3.6 to 4.1 mm 2 /s, (B) a phosphorus compound, (C) a calcium salicylate and/or a calcium sulfonate, (D) a boron-modified ashless dispersant in an amount of 0.001 to 0.008 percent by mass as boron, and (E) a friction modifier, each in a specific amount, the lubricating oil composition having a 100°C kinematic viscosity of 5.2 to 5.6 mm 2 /s and a viscosity index of 165 or greater.
IPC 8 full level
C10M 129/76 (2006.01); C10M 133/16 (2006.01); C10M 137/02 (2006.01); C10M 139/00 (2006.01); C10M 159/22 (2006.01); C10M 159/24 (2006.01); C10M 169/04 (2006.01); C10N 20/02 (2006.01); C10N 30/00 (2006.01); C10N 30/02 (2006.01); C10N 30/06 (2006.01); C10N 40/04 (2006.01)
CPC (source: EP US)
C10M 141/10 (2013.01 - US); C10M 169/045 (2013.01 - EP US); C10M 2203/1065 (2013.01 - EP US); C10M 2207/262 (2013.01 - EP US); C10M 2207/281 (2013.01 - EP US); C10M 2215/08 (2013.01 - EP US); C10M 2219/046 (2013.01 - EP US); C10N 2020/019 (2020.05 - EP US); C10N 2020/02 (2013.01 - EP US); C10N 2030/02 (2013.01 - EP US); C10N 2030/06 (2013.01 - EP US); C10N 2030/42 (2020.05 - EP US); C10N 2030/45 (2020.05 - EP US); C10N 2030/54 (2020.05 - EP US); C10N 2030/68 (2020.05 - EP US); C10N 2030/76 (2020.05 - EP US); C10N 2040/045 (2020.05 - EP US); C10N 2060/14 (2013.01 - EP US)
Citation (search report)
- [Y] EP 2039745 A1 20090325 - NIPPON OIL CORP [JP], et al
- [Y] US 2004192562 A1 20040930 - MORITA EITARO [JP]
- See references of WO 2014013975A1
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
DOCDB simple family (publication)
EP 2876152 A1 20150527; EP 2876152 A4 20160309; CN 104487557 A 20150401; CN 104487557 B 20160817; JP 2014037533 A 20140227; JP 5968273 B2 20160810; US 2015141305 A1 20150521; WO 2014013975 A1 20140123
DOCDB simple family (application)
EP 13819976 A 20130716; CN 201380038760 A 20130716; JP 2013069266 W 20130716; JP 2013150126 A 20130719; US 201314414897 A 20130716