Abstract:
A low emission diesel fuel suitable for use in underground diesel-engined mining equipment comprises a straight run distillate fuel having an end point not greater than 300.degree. C. (about 660.degree. F.), a cetane number in the range of 55 to 60 a specific gravity not greater than 0.83 a sulfur content not greater than 0.1 wt percent and an aromatics content of 18 to 30 wt. percent. The T.sub.90 of the fuels is typically in the range of 255.degree. to 270.degree. C. (about 490.degree. F. to 525.degree. F.), with an initial boiling points typically in the range of 170.degree. to 190.degree. C. (about 340.degree. to 374.degree. F). Ten percent points (T.sub.10) are typically in the range from about 200.degree. to 220.degree. C. (about 390.degree. to 430.degree. F.). The API gravity of the fuel is at least 38 and is typically in the range of 38 to 42 and the specific gravity is typically in the range of 0.82 to 0.83.
Abstract:
A detergent additive composition for diesel fuel contains a low molecular weight polyisobutylene monosuccinimide of polyethylene polyamine in an aromatic hydrocarbon diluent. The detergent additive composition may be used to remove or prevent engine deposits and their corrosive effects.
Abstract:
The lubricity of low sulphur fuels is enhanced by incorporation of a lubricity enhancing additive in combination with an ethylene-unsaturated ester copolymer.
Abstract:
The invention is a fuel and a method for producing an improved hydrocarbon fuel for internal combustion engines and turbines. The method includes the steps of subjecting a conventional hydrocarbon liquid fuel to ozonization. The ozonization is performed under one of two conditions. The first of the two conditions is a process of forming a current of the liquid fuel and bubbling an ozone-oxygen mixture in a countercurrent through the liquid fuel. The second of the two conditions is a process of enriching the liquid fuel with oxygen and subjecting the enriched fuel with ultraviolet radiation. Desirable concentrations of ozonization products in the fuel are from 0.1% o to 2.0% o.
Abstract:
A low emissions "clean" diesel fuel and methods of producing a clean diesel fuel are provided. In one aspect, this invention relates to a method of producing a diesel fuel which provides reduced, or at least substantially equivalent, emissions of oxides of nitrogen ("NO.sub.x ") In another aspect this invention relates to a clean diesel fuel composition which is economical to produce, meets regulatory specifications, and has desirable characteristics including acceptable aromatics content and cetane number.
Abstract:
A method of plant tissue culture which comprises culturing a tissue or an organ of a plant, a part of the same or cultured cells in a medium containing a culture filtrate and/or an extract of a photosynthetic procaryotic microorganism.Such a culturing method effectively proliferates the plant tissues and cultured cells, and also promotes the formation of adventive embryos, regeneration of the plant body and production of useful substances formed by that plant.Strains of cyanobacteria or photosynthetic bacteria are preferably used as the photosynthetic procaryotic microorganism.
Abstract:
Compounds that are themselves effective cetane improvers in diesel fuel but are considered too explosion sensitive for safe handling can be rendered relatively nonsensitive by blending with nitric acid esters of bicyclic or tricyclic alcohols containing a four-membered or five-membered ring and the resulting blend is an effective cetane improver. An example is a 50-50 blend of 2-methyl-2-nitropropyl nitrate, a shock-sensitive compound, with 5,6-cyclopenteno-2-norbornyl nitrate to give a relatively insensitive, but very effective cetane improver.
Abstract:
Addition of an oxygenated compound and a diesel fuel soluble form of a rare earth metal has been found to reduce particulate emissions from a diesel fueled engine. Preferred soluble rare earth metal additives include cerium carbonyls such as cerium salts of alkylcarboxylic acids and cyclic carboxylic acids.
Abstract:
Liquid fuels having anticorrosion properties for use in internal combustion engines comprising (1) a major fraction of a monohydroxy alkanol having from 1 to about 5 carbon atoms, and (2) a corrosion inhibiting amount of a mixture of (a) from about 5 to 95 parts of at least one polymerized unsaturated aliphatic monocarboxylic acid having from about 16 to 18 carbon atoms per molecule, and (b) from about 95 to 5 parts of an aliphatic dicarboxylic acid having from 2 to about 10 carbon atoms.