Abstract: Alcohols may be inhibited against corrosion by addition thereto of an amine [R(OR').sub.n ].sub.a --NH.sub.3-a typically dodecyloxy-(isopropoxy)-isopropylamine.

Abstract: A novel fuel composition containing a hydrocarbon boiling in the gasoline boiling range plus optionally ethanol or methanol plus, as a corrosion inhibitor, a dialkoxylated alkyl polyoxyalkyl primary amine ##STR1## typified by ##STR2##

Abstract: Apparatus for dewatering flowing diesel fuel includes an agglomerator in a conduit, a sump containing an acid resin catalyst, a sensor in the sump for detecting water, and a conduit for injecting dimethoxyketal into the sump, in accordance with a signal generated by the sensor, the dimethoxy ketal reacting with the water in the diesel fuel in the presence of the catalyst whereby the flowing diesel fuel is dewatered.

Abstract: Gasohol containing a mixture of gasoline and absolute ethanol, is maintained as a single phase mixture in the presence of water at pH below 7 by addition of an acetal; a ketal such as 2,2-dimethoxy propane; or an orthoester.

Abstract: The amount of smoke, soot and invisible particulates emitted with the exhaust of engines run on diesel fuel is reduced by incorporating therein an additive consisting of a synergistic mixture of cyclohexane with an oxygenated compound which readily gives up oxygen during combustion.Also disclosed is a method of operating a diesel engine using the fuel of the invention.

Abstract: A novel fuel composition contains ethanol or gasohol plus, as a wear-inhibiting additive, a quaternary ammonium reaction product of dilauryl phosphate and a t-alkyl monoamide of iminodiacetic acid.

Abstract: Hydrocarbon fuels including gasoline and fuels heavier than gasoline may be extended by addition thereto of ether-alcohol extenders, soluble in the hydrocarbon fuel, prepared by etherifying an oxy-alcohol mixture. The product is a single-phase mixture which possesses improved water tolerance.

Abstract: Hydrocarbon fuels heavier than gasoline may be extended by addition thereto of ether or ester fuel extenders, soluble in the hydrocarbon fuel, having a molecular weight of about 65-200 and characterized by the presence of at least one methoxy group or ethoxy group. The product is a single-phase mixture which is free of methanol or ethanol.

Abstract: Method for rejuvenating a smoke filter which is adapted to remove solid particles from an internal combustion engine exhaust gas stream. The filter includes a bed which forms a multi-passage path along which an exhaust stream flows, and in which carbon particles are retained. A heating element incorporated into the filter bed periodically heats the flowing exhaust gas stream as well as the bed. Rejuvenation of the bed by burning off carbon is regulated in response to variations in the gas pressure, and in the bed temperature.

Abstract: A filter adapted to connect to an internal combustion engine in relatively close proximity to the engine. The filter will receive a stream of hot exhaust gas immediately as the latter passes from the engine's combustion chambers. The gas then passes through a filter bed disposed within a manifold system incorporated into the filter. The filter bed includes means for stabilizing the temperature thereof within a desired range, regardless of the operating condition of the engine, and the temperature of exhaust gas.

Abstract: A smoke filter element adapted to remove solid particles from an internal combustion engine's exhaust gas stream includes a bed which forms a multi-passage path along which the carbon particles are retained. A heating system incorporated into the filter periodically heats the flowing exhaust stream, as well as the bed. Rejuvenation of the bed by burning off carbon is automatically prompted when filter pressure and temperature reach predetermined levels. Concurrently the engine throttle is adjusted to a preferred engine speed whereby ideal conditions for burning are established.

Abstract: A water-containing gasoline or gasahol is contacted with a substantially saturated aqueous solution of calcium chloride plus solid calcium chloride; and dry gasahol is recovered.

Abstract: Gasoline and aqueous alcohol, such as 95 w % ethanol, are mixed to form wet two-phase gasahol (including a hydrocarbon phase and a water phase); and the water-phase is separated and reacted with a ketal, acetal, or orthoester to form a dry composition which is blended back into the gasoline-phase to form a dry gasahol.

Abstract: Substantial increase in octane number of a gasoline is attained by addition of eq. 2 vol. % phenyl t-butyl ether.

Abstract: Addition of 0.1 to 1.5 percent by weight of wax oxidates to a diesel fuel is found to reduce the amount of soot and invisible particles produced when the fuel is used in a diesel engine. The wax oxidates act synergistically with fuel-soluble organometallic compounds such as alkyl cyclopentadienyl manganese tricarbonyl complex salts in reducing particulates. The wax oxidates used have a ratio of Neutralization Number to Saponification Number below about 0.40 and a Saybolt Universal Viscosity at 210.degree. F. higher than 1600.

Abstract: The amount of soot and invisible particulates emitted with the exhaust of engines run on diesel fuel is reduced by incorporating therein an additive consisting of a mixture of an oxygenated compound and an alkyl cyclopentadienyl manganese tricarbonyl.Also disclosed is a method of operating a diesel engine using the fuel of the invention.

Abstract: Pure methyl-t-butyl ether is used as a cosolvent for hydrous ethanol in gasoline fuel mixtures. The ether solubilizes grain alcohol in all proportions in low aromatics content gasolines.

Abstract: A crude oil composition having a low pour point is prepared by incorporating into a waxy crude oil an effective pour depressant amount of an oil-soluble polymer, such as vinyl acetate-ethylene-propylene or butylene terpolymer or a graft copolymer in which propylene or butylene is grafted onto an ethylene-vinyl acetate copolymer backbone or basic chain. The terpolymer may be added with mixing directly to the heated crude or in hydrocarbon solution such as a solution of the terpolymer in a middle distillate or kerosene. In another aspect, this invention relates to a process for the pipeline transportation of the crude oil compositions previously described.

Abstract: A low pour point residual fuel oil composition is prepared from a major amount of a high pour point, low sulfur, waxy, residual fuel and a minor amount of a low wax, low pour, residual fuel oil by adding thereto from 0.01 to 0.5% by weight of an oil soluble terpolymer such as vinyl acetate-ethylene-propylene or butylene or a graft copolymer in which propylene or butylene is grafted onto an ethylene-vinyl acetate copolymer backbone or basic chain, having preferably, a number average molecular weight of about 12,000 to about 60,000. In another aspect, this invention relates to a process for the pipeline transportation of the low pour residual fuel oil compositions previously described.

Abstract: A low pour crude oil composition is prepared by incorporating into a waxy crude oil an effective pour depressant amount of an oil-soluble terpolymer, such as a vinyl acetate-ethylene-methacrylic or acrylic acid ester terpolymer. The terpolymer may be added with mixing directly to the heated crude or in hydrocarbon solution such as a solution of the terpolymer in a middle distillate or kerosene. In another aspect, this invention relates to a process for the pipeline transportation of the low pour point crude oil composition previously described.