Title:
LUBRICATING OIL COMPOSITION FOR STEPLESS TRANSMISSIONS AND METHOD FOR LUBRICATING STEPLESS TRANSMISSIONS THEREWITH
Document Type and Number:
WIPO Patent Application WO/1997/012950
Kind Code:
A1
Abstract:
A lubricating oil composition for stepless transmissions prepared by blending a lube base oil with (A) a sulfur base extreme-pressure agent, (B) a phosphorus base extreme-pressure agent, and (C) an alkaline earth metal base detergent. The component (A) is selected from among sulfurized fats and oils, thio-carbonates, thioterpenes and so on; the component (B) from among tricresyl phosphate, amine salts of alkyl and alkenyl phosphates and so on; and the components (C) from among calcium phenate and so on. This composition is excellent in wear resistance and extreme-pressure properties and can keep a high coefficient of friction for a long time, so that it is useful as a lubricating oil composition permitting the transmission of a great capacity of torque for stepless transmissions of, particularly, metallic belt type.
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Inventors:
ICHIHASHI TOSHIHIKO (JP)
IGARASHI HIDEO (JP)
SONODA NOBORU (JP)
IGARASHI HIDEO (JP)
SONODA NOBORU (JP)
Application Number:
PCT/JP1996/002877
Publication Date:
April 10, 1997
Filing Date:
October 03, 1996
Export Citation:
Assignee:
IDEMITSU KOSAN CO (JP)
ICHIHASHI TOSHIHIKO (JP)
IGARASHI HIDEO (JP)
SONODA NOBORU (JP)
ICHIHASHI TOSHIHIKO (JP)
IGARASHI HIDEO (JP)
SONODA NOBORU (JP)
International Classes:
C10M163/00; C10N10/04; C10N20/00; C10N30/04; C10N30/06; C10N40/04; (IPC1-7): C10M163/00; C10M135/04; C10M135/18; C10M135/20; C10M137/04; C10M137/08; C10M151/00; C10M159/20
Foreign References:
| JPH073283A | 1995-01-06 | |||
| JPH06336593A | 1994-12-06 | |||
| JPH06501516A | 1994-02-17 |
Other References:
See also references of EP 0805194A4
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