Method for reducing intake valve deposits

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United States of America Patent

PATENT NO 11912949
APP PUB NO 20220389339A1
SERIAL NO

17762141

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Abstract

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Method for reducing intake valve deposits in a spark ignition internal combustion engine which is fuelled with a gasoline fuel composition, wherein the method comprises introducing into the engine an aqueous based composition, wherein the aqueous based composition comprises (i) water, (ii) from 0 vol % to 40 vol % freezing point suppression agent, (iii) from 0 vol % to 10 vol % of surfactant, and (iv) an amine compound in a blending amount of from 0 ppmw to 1000 ppmw.

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Patent Owner(s)

  • SHELL USA, INC.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Aradi, Allen Ambwere Houston, US 6 2
Cracknell, Roger Francis London, GB 18 53
Kolbeck, Andreas Hamburg, DE 2 7
Russo, Joseph Michael Houston, US 17 38

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