Combustion Pre-Chamber Assembly Including Fluidic Oscillator
First Claim
1. A combustion pre-chamber assembly for a reciprocating internal combustion engine, the combustion pre-chamber assembly comprising:
- a body that defines;
a combustion pre-chamber,a plurality of orifices that extend through the body and effect fluid communication between the combustion pre-chamber and a main combustion chamber of the reciprocating internal combustion engine,a fuel inlet conduit, anda fluidic oscillator flow path with an oscillator inlet in fluid communication with an outlet of the fuel inlet conduit, and an oscillator outlet in fluid communication with the combustion pre-chamber; and
an ignition device operatively coupled to the combustion pre-chamber,wherein the fluidic oscillator flow path includes a plurality of oscillator conduits fluidly coupled to one another in parallel such that each oscillator conduit of the plurality of oscillator conduits effects fluid communication between the oscillator inlet and the oscillator outlet.
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Abstract
A combustion pre-chamber assembly for a reciprocating internal combustion engine includes a body that defines a combustion pre-chamber, a plurality of orifices that extend through the body and effect fluid communication between the combustion pre-chamber and a main combustion chamber of the reciprocating internal combustion engine, a fuel inlet conduit, and a fluidic oscillator flow path with an oscillator inlet in fluid communication with an outlet of the fuel inlet conduit, and an oscillator outlet in fluid communication with the combustion pre-chamber. An ignition device is operatively coupled to the combustion pre-chamber. The fluidic oscillator flow path includes a plurality of oscillator conduits fluidly coupled to one another in parallel. Each oscillator conduit effects fluid communication between the oscillator inlet and the oscillator outlet.
32 Citations
20 Claims
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1. A combustion pre-chamber assembly for a reciprocating internal combustion engine, the combustion pre-chamber assembly comprising:
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a body that defines; a combustion pre-chamber, a plurality of orifices that extend through the body and effect fluid communication between the combustion pre-chamber and a main combustion chamber of the reciprocating internal combustion engine, a fuel inlet conduit, and a fluidic oscillator flow path with an oscillator inlet in fluid communication with an outlet of the fuel inlet conduit, and an oscillator outlet in fluid communication with the combustion pre-chamber; and an ignition device operatively coupled to the combustion pre-chamber, wherein the fluidic oscillator flow path includes a plurality of oscillator conduits fluidly coupled to one another in parallel such that each oscillator conduit of the plurality of oscillator conduits effects fluid communication between the oscillator inlet and the oscillator outlet. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A reciprocating internal combustion engine, comprising:
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a cylinder block; a cylinder positioned within the cylinder block and defining a main combustion chamber; a cylinder head attached to the cylinder; a combustion pre-chamber assembly positioned within the cylinder head in fluid communication with the main combustion chamber; an intake duct configured to supply a first flow of fuel and a flow of oxidizer to the main combustion chamber; and a fuel supply system configured to supply a second flow of fuel to the combustion pre-chamber assembly, wherein the combustion pre-chamber assembly includes a body and an ignition device operatively coupled to combustion pre-chamber defined by the body, wherein the body of the combustion pre-chamber assembly further defines; a plurality of orifices that extend through the body and effect fluid communication between the combustion pre-chamber and the main combustion chamber of the reciprocating internal combustion engine, a fuel inlet conduit, and a fluidic oscillator flow path with an oscillator inlet in fluid communication with an outlet of the fuel inlet conduit, and with an oscillator outlet in fluid communication with the combustion pre-chamber, wherein the fluidic oscillator flow path includes a plurality of oscillator conduits fluidly coupled to one another in parallel such that each oscillator conduit of the plurality of oscillator conduits effects fluid communication between the oscillator inlet and the oscillator outlet. - View Dependent Claims (15, 16, 17)
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18. A method for providing an ignition energy to a main combustion chamber of an internal combustion engine via a combustion pre-chamber assembly disposed in fluid communication with the main combustion chamber, the method comprising:
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supplying a first flow of fuel and a flow of oxidizer via the main combustion chamber into a combustion pre-chamber defined by the combustion pre-chamber assembly; supplying a second flow of fuel to an oscillator inlet of a fluidic oscillator flow path including a plurality of oscillator conduits fluidly coupled to one another in parallel such that each oscillator conduit of the plurality of oscillator conduits effects fluid communication between the oscillator inlet and an oscillator outlet; passively inducing a periodic modulation of the second flow of fuel exiting the oscillator outlet; forming a mixture of the second flow of fuel, the first flow of fuel, and the flow of oxidizer within the combustion pre-chamber; supplying the ignition energy to the combustion pre-chamber and igniting the mixture in the combustion pre-chamber to produce combustion products; and flowing the combustion products from the combustion pre-chamber via a plurality of orifices defined by the combustion pre-chamber to provide the main combustion chamber with the ignition energy. - View Dependent Claims (19, 20)
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Specification