Ducted combustion systems utilizing duct structures
First Claim
1. A ducted combustion system, comprising:
- a combustion chamber defined as an enclosure bound at a first end by a flame deck surface of a cylinder head of an internal combustion engine, and bound at a second end by a piston top surface of a piston disposed within the internal combustion engine;
a fuel injector in fluid connection with the combustion chamber and including a plurality of orifices in an injector tip of the fuel injector, the plurality of orifices injecting fuel into the combustion chamber as a plurality of fuel jets; and
a generally conical duct structure defining a plurality of ducts and disposed within the combustion chamber between the flame deck surface and the piston top surface, the plurality of ducts being disposed such that each of the plurality of fuel jets at least partially enters one of the plurality of ducts upon being injected into the combustion chamber.
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Accused Products
Abstract
A ducted combustion system is disclosed. The ducted combustion system includes a combustion chamber bound by a flame deck surface of a cylinder head of an internal combustion engine and by a piston top surface of a piston disposed within the internal combustion engine. The system includes a fuel injector including a plurality of orifices, the plurality of orifices injecting fuel into the combustion chamber as a plurality of fuel jets. The system includes a duct structure defining a plurality of ducts and disposed within the combustion chamber between the flame deck surface and the piston top surface, the plurality of ducts being disposed such that each of the plurality of fuel jets at least partially enters one of the plurality of ducts upon being injected into the combustion chamber.
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Citations
16 Claims
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1. A ducted combustion system, comprising:
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a combustion chamber defined as an enclosure bound at a first end by a flame deck surface of a cylinder head of an internal combustion engine, and bound at a second end by a piston top surface of a piston disposed within the internal combustion engine; a fuel injector in fluid connection with the combustion chamber and including a plurality of orifices in an injector tip of the fuel injector, the plurality of orifices injecting fuel into the combustion chamber as a plurality of fuel jets; and a generally conical duct structure defining a plurality of ducts and disposed within the combustion chamber between the flame deck surface and the piston top surface, the plurality of ducts being disposed such that each of the plurality of fuel jets at least partially enters one of the plurality of ducts upon being injected into the combustion chamber. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An internal combustion engine, comprising:
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an engine block having at least one cylinder bore; a cylinder head having a flame deck surface disposed at one end of the cylinder bore; a piston connected to a crankshaft and configured to reciprocate within the cylinder bore, the piston having a piston top surface facing the flame deck surface such that a combustion chamber is defined within the cylinder bore bound at a first end by the flame deck surface and at a second end by the piston top surface; a fuel injector in fluid connection with the combustion chamber and including a plurality of orifices in an injector tip of a fuel injector, the plurality of orifices injecting fuel into the combustion chamber as a plurality of fuel jets; and a duct structure defining a plurality of ducts and disposed within the combustion chamber between the flame deck surface and the piston top surface, the plurality of ducts being disposed such that each of the plurality of fuel jets at least partially enters one of the plurality of ducts upon being injected into the combustion chamber, wherein the duct structure is a generally conical disc structure. - View Dependent Claims (12, 13, 14)
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15. A method for operating a combustion system, comprising:
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injecting a plurality of fuel jets into a combustion chamber of an internal combustion engine, the combustion chamber defined as an enclosure bound at a first end by a flame deck of a cylinder of an internal combustion engine, and bound at a second end by a piston top surface of a piston disposed within the internal combustion engine; directing each of the plurality of fuel jets, at least partially, into respective members of a plurality of ducts, each of the plurality of ducts being defined within a generally conical shaped duct structure, to provide a substantially uniform mixture of fuel and air within each of the plurality of fuel jets. - View Dependent Claims (16)
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Specification