Fuel Compositions
AssigneeEthyl Corporation
InventorJ. Vincent Hanlon
Life of this patent
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Abstract
Coking in and around the injector nozzles of indirect injection compression ignition engines is reduced by means of distillate fuel with which has been blended suitable concentrations of: (a) hydrocarbyl-substituted succinimide, (b) hydrocarbyl amine having from 3 to 60 carbons and from 1 to 10 nitrogens, and (c) N,N'-disalicylidene-1,2-diaminopropane. Also described are additive mixtures of (a), (b) and (c) for use in distillate fuels in amounts sufficient to reduce the coking tendencies of such fuels when used in the operation of indirect injection compression ignition engines.
Claims28
Distillate fuel for indirect injection compression ignition engines containing at least the combination of (a) hydrocarbyl-substituted succinimide or succinamide, (b) hydrocarbyl amine having from 3 to 60 carbons and from 1 to 10 nitrogens and (c) N,N'-disalicylidene-1,2-diaminopropane, said combination being present in an amount sufficient to minimize coking on the nozzles of indirect injection compression ignition engines operated on such fuel.
A process of inhibiting coking on the injector nozzles of an indirect injection compression ignition engine, which method comprises supplying said engine with a distillate fuel containing at least the combination of (a) hydrocarbyl-substituted succinimide or succinamide, (b) hydrocarbyl amine having from 3 to 60 carbons and from 1 to 10 nitrogens and (c) N,N'-disalicyli-dene-1,2-diaminopropane, said combination being present in an amount sufficient to minimize such coking in the engine operated on such fuel.
An additive fluid concentrate for use in distillate fuels containing at least the combination of (a) a hydrocarbyl-substituted succinimide or succinamide, (b) hydrocarbyl amine having from 3 to 60 carbons and from 1 to 10 nitrogens and (c) N,N'-disalicylidene-1,2-diaminopropane.
Dependencies are inferred from the claim text.