Fuel Borne Catalysts for Sulfur Rich Fuels
First Claim
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1. A method of improving the operation of a diesel engine operating with high sulfur fuel, the method comprising the steps of:
- providing for adding to a diesel fuel of a fuel borne catalyst in an effective amount to lower the emissions of unburned hydrocarbons and carbon monoxide, the fuel borne catalyst comprising;
a platinum group metal composition comprising at least one material selected from the group consisting of platinum, and palladium, or mixtures thereof;
at least one rare earth metal selected from the group consisting of cerium, and yttrium, or mixtures thereof; and
at least one transition metal compound comprising iron, and manganese, or mixtures thereof, andproviding for operating of the diesel engine by burning the fuel over a sufficient period of time to produce exhaust gases and achieve a sustained reduction in unburned hydrocarbons and carbon monoxide.
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Abstract
Fuel Borne Catalysts of use in High Sulfur Fuels are disclosed, where formulations may include any number of suitable platinum group metals, transition metals, rare earth metals, and alkaline earth metals, including platinum, palladium, iron, manganese, cerium, yttrium, lithium, sodium, calcium, strontium, vanadium, silver and combinations thereof.
21 Citations
23 Claims
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1. A method of improving the operation of a diesel engine operating with high sulfur fuel, the method comprising the steps of:
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providing for adding to a diesel fuel of a fuel borne catalyst in an effective amount to lower the emissions of unburned hydrocarbons and carbon monoxide, the fuel borne catalyst comprising; a platinum group metal composition comprising at least one material selected from the group consisting of platinum, and palladium, or mixtures thereof; at least one rare earth metal selected from the group consisting of cerium, and yttrium, or mixtures thereof; and at least one transition metal compound comprising iron, and manganese, or mixtures thereof, and providing for operating of the diesel engine by burning the fuel over a sufficient period of time to produce exhaust gases and achieve a sustained reduction in unburned hydrocarbons and carbon monoxide. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for improving operation of a diesel engine by lowering emissions of unburned hydrocarbons and carbon monoxide, the method comprising the steps of:
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providing for a presence of a diesel fuel and combustion air; providing a fuel borne catalyst comprising a platinum group metal composition comprising at least one material selected from the group consisting of platinum, and palladium, or mixtures thereof, at least one rare earth metal selected from the group consisting of cerium, and yttrium, or mixtures thereof, and at least one transition metal compound comprising iron, and manganese, or mixtures thereof; providing for combusting of the fuel in a diesel engine to produce exhaust gases; and
,providing for directing of exhaust gases into an exhaust system; wherein the fuel borne catalyst is introduced into the fuel, the exhaust gases or the combustion air, in amounts effective to provide the fuel borne catalyst in the exhaust system at a level of up to 1 ppm based on a volume of fuel burned to produce the exhaust gases. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification