Patent ID: 6748905
Filing Date: 2004-06-15
Classification: C10L

Abstract:
A process for reducing engine wear in the operation of an internal combustion engine, comprising:(A) recirculating at least part of the exhaust gas from the engine to the intake air supply of the engine; and (B) operating the engine using a water-blended fuel composition made by combining: (i) a normally liquid hydrocarbon fuel; (ii) water; and (iii) at least one surfactant comprising: (iii)(a) at least one product made from the reaction of an acylating agent with ammonia, an amine, a hydroxyamine, an alcohol, or a mixture of two or more thereof; (iii)(b) at least one product derived from: a polycarboxylic acylating agent; a copolymer derived from at least one olefin monomer and at least one alpha, beta unsaturated carboxylic acid or derivative thereof; and a linking compound having two or more primary amino groups, two or more secondary amino groups, at least one primary amino group and at least one secondary amino group, at least two hydroxyl groups, or at least one primary or secondary amino group and at least one hydroxyl group; (iii)(c) at least one Mannich reaction product derived from a hydroxy aromatic compound, an aldehyde or a ketone, and an amine containing at least one primary or secondary amino group; (iii)(d) at least one ionic or a nonionic compound having a hydrophilic-lipophilic balance of about 1 to about 40; or (iii)(e) mixture of two or more of (iii)(a) through (iii)(d).