Diesel emissions control system and method
OwnerWilliam Bradyinventor
Life of this patent
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Abstract
The invention is embodied in a diesel system for reducing particulate matter emissions in off-road vehicles, coal mining and metal/non-metal mining operations, comprising, in combination, a supply of highly paraffinic diesel fuel having a high Cetane rating and substantially no sulfur, aromatics and nitrogen content and being formulated to greatly reduce PM output levels from the engine relative to conventional diesel fuels, The invention is further embodied in the method of reducing diesel emission contaminants including providing a supply of highly paraffinic diesel fuel having a negligible sulfur, aromatics or nitrogen content, and a high Cetane number, and other apparatus useful for filtering engine emissions before discharge to ambient.
Claims24
A diesel emissions control system for reducing diesel particulate matter (“dpm”) in diesel engine exhaust to meet environmental control parameters, comprising, a supply of highly paraffinic synthetic diesel fuel for the diesel engine, and apparatus for receiving the emissions output from the diesel engine and being constructed and arranged with filter means through which all exhaust gases must pass before discharge to ambient.
The emissions control system of class 4, in which the synthetic diesel fuel has an aromatics content less than 1.0%.
A synthetic diesel fuel for low emissions control in diesel engine equipment/machinery, said fuel having a Cetane rating in the range of 60 to 100 and the following properties:
- (1) a sulfur content of less than 1.0%
- (2) an aromatics content of less than 1.0%
- (3) a nitrogen content of less than 1.0%.
A method for achieving optimum diesel engine performance and maximum removal of DPM and Co from diesel emission gases, comprising the steps of:
- formulating a paraffinic-type synthetic diesel fuel characterized by having a high Cetane number over 60 and a negligible amount of sulfur, aromatics and nitrogen content;
- providing a supply of the fuel for operating the diesel engine to thereby effect a substantial reduction of DPM content in the emissions gasses therefrom;
- and passing the engine exhaust emissions through discharge filtering means or directly to ambient.
Dependencies are inferred from the claim text.