Gasoline composition for reducing intake valve deposits in port

Details Gasoline composition for reducing intake valve deposits in port Gasoline composition for reducing intake valve deposits in port

1989-06-28

1991-04-09

Medley, Margaret B.

Fuel and related compositions

Liquid fuels

Organic nitrogen compound containing

44443, 123 1A, C10L 114

Patent

active

050061305

ABSTRACT:
Intake valve deposits in port fuel injected engines are reduced by using a mixture of (a) of about 2.5 ppmw or higher of basic nitrogen in the form of an oil-soluble aliphatic alkylene polyamine containing at least one olefinic polymer chain, said polyamine having a molecular weight of about 600 to about 10,000, and (b) from about 75 ppmw to about 125 ppmw based on the fuel composition of certain oil-soluble olefinic polymers, poly(oxyalkylene) alcohol, glycol or polyol or mono or di ether thereof, non-aromatic oils or polyalpha olefins. The fuels are also compatible with carburetor and throttle body injected engines.

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patent: 4810263 (1989-03-01), Zimmerman
patent: 4877416 (1989-10-01), Campbell

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