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US 2026/0185497 A1Published application
Methods and Devices for Reducing NOx Emissions Produced by Diesel Engines
OwnerKeith E. Cavalliniinventor
Life of this patent
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Abstract
The invention includes methods and devices for preventing excessive NOx formation during the combustion event of a compression-ignition engine with any combustible fuel (diesel, Jet-A, JP8, bio fuel, etc).
Claims20
A diesel engine, comprising:
- a combustion chamber, said combustion chamber including a volume that is defined by an inner wall of a cylinder liner, a top surface of a piston, and a bottom surface of a cylinder head;
- a first injector disposed within said cylinder head, wherein said first injector includes a first injector tip, wherein said first injector tip extends to a first location within the of the volume of the combustion chamber;
- a second injector disposed within said cylinder head, wherein said second injector includes a second injector tip, wherein said second injector tip extends to a second location within the volume of the combustion chamber;
- wherein said first injector is configured to introduce a fuel into the volume of the combustion chamber;
- wherein said second injector is configured to introduce an additional substance into the volume of the combustion chamber;
- wherein said introduction of said additional substance into said volume of said combustion chamber reduces an overall combustion flame front temperature to from about 2100 K to about 2300 K such that NOx formation within said volume of said combustion chamber is reduced during the combustion process.
3 more elements
An engine comprising:
- a plurality of combustion chambers, wherein each of said plurality of combustion chambers includes a volume that is defined by an inner wall of a cylinder liner, a top surface of a piston, and a bottom surface of a cylinder head;
- wherein each of said volumes includes a first injector tip that extends to a first location within said volume of said combustion chamber and a second injector tip that extends to a second location within said volume of said combustion chamber;
- wherein said first injector tip includes a plurality of apertures for introduction of a fuel into said volume of said combustion chamber and wherein said second injector tip includes a plurality of apertures for introduction of an additional substance into said volume of said combustion chamber;
- wherein said additional substance is selected from the group consisting of windshield washer fluid, methanol, or ethanol;
- and
- wherein said introduction of said additional substance into said volume of said combustion chamber reduces an overall combustion flame front temperature such that NOx formation is reduced during the combustion process.
3 more elements
A method for reducing NOx formation in a diesel engine, comprising:
- providing a diesel engine having at least one combustion chamber, said at least one combustion chamber further comprising a volume that is defined by an inner wall of a cylinder liner, a top surface of a piston, and a bottom surface of a cylinder head;
- providing a first injector in communication with said volume of said at least one combustion chamber for introduction of a fuel into said volume of said at least one combustion chamber;
- providing a second injector in communication with said volume of said at least one combustion chamber for introduction of an additional substance into said volume of said at least one combustion chamber, wherein said additional substance is selected from the group consisting of windshield washer fluid, methanol, or ethanol, whereas the introduction of the additional substance into said volume of said at least one combustion chamber reduces NOx formation.
Dependencies are inferred from the claim text.