The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 17, 2015
Filed:
Oct. 05, 2007
Valérie Doyen, Four, FR;
Denis Lancon, Chassieu, FR;
Jean-marie Bourmaud, Luzinay, FR;
Florence Bredon, Oullins, FR;
Valérie Doyen, Four, FR;
Denis Lancon, Chassieu, FR;
Jean-Marie Bourmaud, Luzinay, FR;
Florence Bredon, Oullins, FR;
Total Marketing Services, Puteaux, FR;
Abstract
The present invention for a two-stroke marine engine, which can be used with both high-sulphur content fuel oils and low-sulphur content fuel oils. It relates to a cylinder lubricant having a BN determined according to the standard ASTM D-2896 greater than or equal to 40 milligrams of potash per gram of lubricant, comprising a lubricant base stock for marine engines and at least one overbased detergent based on alkali metals or alkaline-earth metals, characterized in that it also contains a quantity of 0.01% to 10% preferably 0.1% to 2% by weight relative to the total weight of the lubricant, of one or more (A) compounds chosen from the primary, secondary or tertiary monoalcohols the alkyl or alkylene chain of which is saturated or unsaturated, linear or branched and comprises at least 12 carbon atoms. This lubricant has a sufficient neutralization capacity vis-à-vis the sulphuric acid formed during the combustion of high-sulphur fuel oils, while limiting the formation of deposits during the use of low-sulphur fuel oils.