| (19) |
 |
|
(11) |
EP 2 703 477 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
02.09.2015 Bulletin 2015/36 |
| (43) |
Date of publication A2: |
|
05.03.2014 Bulletin 2014/10 |
| (22) |
Date of filing: 13.05.2013 |
|
| (51) |
International Patent Classification (IPC):
|
|
| (84) |
Designated Contracting States: |
|
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 |
|
Designated Extension States: |
|
BA ME |
| (30) |
Priority: |
07.06.2012 EP 12171196
|
| (71) |
Applicant: Infineum International Limited |
|
Abingdon,
Oxfordshire OX13 6BB (GB) |
|
| (72) |
Inventor: |
|
- Dodd, James
Abingdon, Oxfordshire OX13 6BB (GB)
|
| (74) |
Representative: Lewis, Pauline Therese et al |
|
PO Box 1
Milton Hill
Abingdon
Oxfordshire OX13 6BB
Oxfordshire OX13 6BB (GB) |
|
| |
|
| (54) |
Marine engine lubrication |
(57) A two-stroke, cross-head, slow-speed, compression-ignited marine engine is operated
by
(i) fuelling it with a diesel fuel, as a pilot fuel, and with a low sulphur fuel,
as a main fuel; and
(ii) lubricating the engine cylinder(s) with a lubricant having a BN of 20 or less
and having a detergent additive system comprising one or more different metal detergents
having a surfactant group selected from phenate, salicylate and sulphonate, or one
or more complex metal detergents containing two or more different surfactant soap
groups selected from phenate, salicylate and sulphonate, and a distilled cashew nut
shell liquid or hydrogenated distilled cashew nut shell liquid.