COMPOSITION

文件类型：PDF文档
文件大小：3254K
The present invention provides a fuel additive composition comprising (i) at least one primary antiknock component selected from (a) iron or an iron compound; (b) lead or a lead compound; (c) manganese or manganese compound; and (d) a metal selected from rare earth metals, lithium, nickel, and thallium or a compound comprising a metal selected from rare earth metals, lithium, nickel, and thallium; (ii) at least one secondary antiknock component selected from (a) oxyhydrocarbyl compounds; and (b) nitrohydrocarbyl compounds; (iii) at least one of (a) a sulphur passivating agent, (b) a material capable of preventing and/or inhibiting valve seat recession of an internal combustion engine.