Composition for control of induction system deposits

Details Composition for control of induction system deposits Composition for control of induction system deposits

C - Chemistry, Metallurgy

10

L

C10L 1/18 (2006.01) C10L 1/14 (2006.01) C10L 1/22 (2006.01) C10L 1/30 (2006.01) C10L 10/00 (2006.01) C10L 1/16 (2006.01) C10L 1/24 (2006.01) C10L 1/26 (2006.01) F02B 1/04 (2006.01)

Patent

CA 2095683

Fuel additives and fuel additive compositions are described comprising: (i) at least one fuel-soluble detergent/dispersant which is (a) a fuel-soluble salt, amide, imide, oxazoline and/or ester, or a mixture thereof, of a long chain aliphatic hydrocarbon-substituted dicarboxylic acid or its anhydride, (b) a long chain aliphatic hydrocarbon having a polyamine attached directly thereto, and/or (c) a Mannich condensation product formed by condensing a long chain aliphatic hydrocarbon- substituted phenol with an aldehyde, and an amine; wherein the long chain hydro- carbon group in (a), (b) and (c) is a polymer of at least one C2 to C10 monoolefin, said polymer having a number average molecular weight of at least about 300; (ii) a fuel-soluble cyclopentadienyl complex of a transition metal; and (iii) a fuel- soluble liquid carrier or additive induction aid. These compositions in use enable surprising improvements in intake valve deposit control as well as other advantages.

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