Fuel and related compositions – Liquid fuels – Aluminum or heavy metal – other than lead – containing
Patent
1985-11-08
1988-10-25
Dixon, Jr., William R.
Fuel and related compositions
Liquid fuels
Aluminum or heavy metal, other than lead, containing
44 58, 44 63, 44 66, 44 73, C10L 122, C10L 118
Patent
active
047801115
ABSTRACT:
Fuel compositions for internal combustion engines, and more particularly, fuel compositions for use in fuel-injected internal combustion engines are described. The fuel compositions comprise a major amount of a liquid hydrocarbon fuel and a minor, property-improving amount of a hydrocarbon-soluble dispersant prepared generally by the post-treatment of a nitrogen-containing composition with mono- and polycarboxylic acids which may be aliphatic or aromatic carboxylic acids although aromatic polycarboxylic acids are preferred. The nitrogen-containing compositions which are post-treated in accordance with the present invention are obtained by reacting an acylating agent with alkylene polyamines or alkanol amines. When fuel compositions of the present invention are utilized in internal combustion engines, and in particular, fuel-injected internal combustion engines, the amount of solid deposits of the various parts of the internal combustion engines are reduced. In particular, the use of such fuels prevents or reduces intake system deposits and injector nozzle deposits. Accordingly, methods for reducing or preventing the build-up of deposits in internal combustion engines also are described.
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Dorer Casper J.
Walsh Reed H.
Cordek James L.
Dixon Jr. William R.
Fischer Joseph P.
Franks Robert A.
McAvoy Ellen
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