Appeal No. 96-0088
Application No. 08/038,426
THE INVENTION
Appellants’ invention is directed to a gasoline additive.
The additive constitutes at least one compound characterized
by direct solubility in gasoline at specific concentrations.
The gasoline additive is further characterized by the
capability of deposition subsequent to a combustion chamber
and the capability of acting as at least one compound of a
three-way catalyst to improve the oxidation of CO, unburned
hydrocarbons and reduction of nitrogen oxides.
THE CLAIMS
Claims 1 and 23 are illustrative of appellants’ invention
and are reproduced below.
1. A gasoline additive for the three-way catalytic
conversion of gasoline combustion engine emission, the
additive comprising at least one compound of a three-way metal
catalyst selected from the group consisting of noble metals
and non-noble metals, wherein each noble metal catalyst is
directly soluble in gasoline in a concentration of about 0.01
to about 10 mg/l and each non-noble metal catalyst is directly
soluble in gasoline in a concentration of about 10 to about
100 mg/l, the metal catalyst of the additive being capable of
being deposited on a surface of a catalytic vessel located
downstream of a combustion chamber and of effecting
simultaneous oxidation of carbon monoxide and unburned
hydrocarbons and reduction of nitrogen oxides.
23. A method for converting emissions from a gasoline
internal combustion engine having an exhaust system for
3
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