Fuel and related compositions – Liquid fuels – Aluminum or heavy metal – other than lead – containing
Patent
1987-03-11
1988-09-27
Dixon, Jr., William R.
Fuel and related compositions
Liquid fuels
Aluminum or heavy metal, other than lead, containing
44 62, 44 63, 44 74, 44 78, 585 14, C10L 116
Patent
active
047739169
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 compound selected from the group consisting of fused aromatics having at least 2, preferably between 3 and 5, aromatic rings with no heteroatoms substituted in the rings. The polynuclear aromatics can be either unsubstituted or substituted with groups other than an alkyl group. Usually the polynuclear aromatic is added to the fuel in an amount between about 0.1 and 5.0 weight percent of the fuel. In particular, anthracene and phenanthrene, and their non-alkyl derivatives, provide effective octane requirement increase-inhibiting additives for unleaded gasoline.
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Brass Stephen G.
Croudace Michael C.
Wusz Timothy
Dixon Jr. William R.
Medley Margaret B.
Oaks Arthur E.
Sandford Dean
Union Oil Company of California
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