Fuel composition and method for control of engine octane require

Details Fuel composition and method for control of engine octane require Fuel composition and method for control of engine octane require

1988-04-22

1989-07-04

Dixon, Jr., William R.

Fuel and related compositions

Liquid fuels

Aluminum or heavy metal, other than lead, containing

44 77, 44 78, 123 1A, C10L 118, C10L 122

Patent

active

048447170

ABSTRACT:
The octane requirement increase phenomenon in a spark ignition internal combustion engine is controlled by introducing with the combustion charge a fuel composition containing an octane requirement increase-inhibiting amount of a combination of compounds, the combination comprising a first compound being (1) a gasoline soluble amide and (2) a second compound being a gasoline soluble ketone. Usually the first and second compounds are each added to the fuel in an amount between about 0.001 and 3 weight percent of the fuel. In particular, the combination of N,N-dibutyl formamide and either benzophenone or methylcyclohexanone provides an effective octane requirement increase-inhibiting additive for unleaded gasoline.

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