초록 ▼

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 anhydrid

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 hydrocarbon 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.

대표청구항 ▼

A fuel additive composition comprising: i) at least one fuel-soluble acyclic hydrocarbyl-substituted polyamine; ii) at least one fuel-soluble cyclopentadienyl manganese tricarbonyl compound; and iii) at least one fuel-soluble liquid carrier fluid; wherein i) and iii) together comprise a polyisobuten

A fuel additive composition comprising: i) at least one fuel-soluble acyclic hydrocarbyl-substituted polyamine; ii) at least one fuel-soluble cyclopentadienyl manganese tricarbonyl compound; and iii) at least one fuel-soluble liquid carrier fluid; wherein i) and iii) together comprise a polyisobutenyl polyamine formulation having a nitrogen content of 0.31 wt %. a TBN of 12.2. a specific gravity at 15.6°C. of 0.882, a viscosity at 40°C. of 35.2 cSt, a viscosity at 100°C. of 7.4 cSt, and a PMCC flash point of 41°C. and yields no sulfated ash: i), ii) and iii) being in amounts effective to reduce the weight of intake valve deposits in a spark-ignition internal combustion engine operated on a gasoline-based fuel containing an intake valve deposit-controlling amount of said fuel additive compound, as compared to the weight of intake valve deposits in said engine operated in the same manner on the same fuel except that it is devoid of cyclopentadienyl manganese tricarbonyl compound.