| (19) |
 |
|
(11) |
EP 0 092 946 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
14.08.1985 Bulletin 1985/33 |
| (43) |
Date of publication A2: |
|
02.11.1983 Bulletin 1983/44 |
| (22) |
Date of filing: 15.04.1983 |
|
|
| (84) |
Designated Contracting States: |
|
BE DE FR GB IT NL SE |
| (30) |
Priority: |
22.04.1982 US 371008
|
| (71) |
Applicant: EXXON RESEARCH AND ENGINEERING COMPANY |
|
() |
|
| (72) |
Inventors: |
|
- Brewster, Phillip William
()
- Smith, Clinton Richard
()
|
|
| |
|
| (54) |
Glycerol esters with oil-soluble copper compounds as fuel economy additives |
(57) Lubricating oil compositions are disclosed exhibiting improved fuel economy which
contain 0.05 to 0.2 wt. % of a glycerol partial ester of a C
16-C
18 fatty acid and 5 to 500 ppm of copper in the form of an oil-soluble organic copper
compound, the two components exhibiting a combined effect in improving fuel economy
of internal combustion engines.