Title:
FINAL-DRIVE LUBRICATING OIL COMPOSITION
Document Type and Number:
WIPO Patent Application WO/1994/014933
Kind Code:
A1
Abstract:
A final-drive lubricating oil composition comprising a base oil and, added thereto, (A) 1-10 wt.% of a sulfurized oxymolybdenum organophosphorodithioate represented by general formula (1), (wherein R1 and R2, which may be the same or different from each other, represent each C4-C18 alkyl or alkenyl; and p and q represent each a positive integer provided the sum of them equals 4), (B) 3-15 wt.% of at least one sulfur-base extreme-pressure agent selected from among sulfurized olefins and alkyl sulfides and (C) 0.1-5 wt.% of at least one phosphorus-base extreme-pressure agent selected from among phosphoric esters, phosphorous esters and alkyl-amine salts of phosphoric esters, each based on the whole composition. The composition serves to further improve the transmission efficiency at the differential gear under varied conditions of input torque, input rotational speed and oil temperature as compared with the conventional compositions containing additives based on sulfur and phosphorus compounds, thus leading to fuel consumption improvement.
Inventors:
TAJIMA NOBORU (JP)
TAKEMITSU KOJI (JP)
OHTSUKA NAOTO (JP)
SHIOMI MASAAKI (JP)
TAKEMITSU KOJI (JP)
OHTSUKA NAOTO (JP)
SHIOMI MASAAKI (JP)
Application Number:
PCT/JP1993/001919
Publication Date:
July 07, 1994
Filing Date:
December 28, 1993
Export Citation:
Assignee:
TONEN CORP (JP)
TAJIMA NOBORU (JP)
TAKEMITSU KOJI (JP)
OHTSUKA NAOTO (JP)
SHIOMI MASAAKI (JP)
TAJIMA NOBORU (JP)
TAKEMITSU KOJI (JP)
OHTSUKA NAOTO (JP)
SHIOMI MASAAKI (JP)
International Classes:
C10M141/12; C10M141/10; C10N10/12; C10N40/04; (IPC1-7): C10M141/12; C10M135/04; C10M137/02; C10M139/00; C10N40/04
Foreign References:
| JPH0220597A | 1990-01-24 | |||
| JPS6361091A | 1988-03-17 | |||
| JPH02182787A | 1990-07-17 | |||
| JPH01225696A | 1989-09-08 |
Other References:
See also references of EP 0677571A4
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