| (19) |
 |
|
(11) |
EP 1 528 097 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
13.07.2005 Bulletin 2005/28 |
| (43) |
Date of publication A2: |
|
04.05.2005 Bulletin 2005/18 |
| (22) |
Date of filing: 19.10.2004 |
|
|
| (84) |
Designated Contracting States: |
|
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR
|
|
Designated Extension States: |
|
AL HR LT LV MK |
| (30) |
Priority: |
29.10.2003 US 696618
|
| (71) |
Applicant: Afton Chemical Corporation |
|
Richmond, Virginia 2319 (US) |
|
| (72) |
Inventors: |
|
- Aradi, Allen, A.
Richmond Virginia 23233 (US)
- Smith, James, B.
Richmond Virginia 23236 (US)
|
| (74) |
Representative: Schwabe - Sandmair - Marx |
|
Stuntzstrasse 16
81677 München
81677 München (DE) |
|
| |
|
| (54) |
Method for reducing combustion chamber deposit flaking |
(57) A method reduces combustion chamber deposit flaking and spark ignited internal combustion
engines. The method includes supplying a fuel having an additive that includes a metal-containing
compound to a spark ignited internal combustion engine. The metal-containing compound
is supplied in an amount effective to reduce combustion chamber deposit flaking. In
one example, the metal is manganese and the additive compound is MMT. The reduction
or elimination of combustion chamber deposit flaking means a reduction in cold start
emissions from the engine.