INTEGRATED FUEL INJECTOR IGNITERS SUITABLE FOR LARGE ENGINE APPLICATIONS AND ASSOCIATED METHODS OF USE AND MANUFACTURE
First Claim
1. An injector for introducing and igniting fuel at an interface with a combustion chamber, the injector comprising:
- an injector body including—
a base portion configured to receive fuel into the injector body;
a nozzle portion opposite the base portion, wherein the nozzle portion is configured to be positioned proximate to the combustion chamber for injecting fuel in the combustion chamber;
a body insulator extending through at least a portion of the body; and
a valve seat carried by the body insulator, wherein the valve seat is positioned at or proximate to the nozzle portion;
a fuel flow path extending through the body; and
a core assembly extending through the body coaxially with at least a portion of the fuel flow path, the core assembly including—
an ignition rod extending from the base portion to the nozzle portion;
an ignition insulator coaxially disposed over the ignition rod, the ignition insulator extending from the base portion at least partially into the nozzle portion; and
a valve coaxially disposed over the ignition insulator, wherein the valve includes a sealing head adjacent to the valve seat, and wherein the valve moves along the ignition insulator between an open position in which the sealing head is spaced apart from the valve seat to allow fuel to exit the fuel flow path, and a closed position in which the sealing head at least partially contacts the valve seat to close the fuel flow path.
7 Assignments
0 Petitions
Accused Products
Abstract
Embodiments of injectors suitable for injection ports having relatively small diameters are disclosed herein. An injector according to one embodiment includes a body having a first end portion opposite a second end portion. The second end portion is configured to be positioned adjacent to a combustion chamber and the first end portion is configured to be spaced apart from the combustion chamber. The injector also includes an ignition conductor extending through the body from the first end portion to the second end portion, and an insulator extending longitudinally along the ignition conductor and surrounding at least a portion of the ignition conductor. The injector further includes a valve extending longitudinally along the insulator from the first end portion to the second end portion. The valve includes a sealing end portion, and the valve is movable along the insulator between an open position and a closed position. The injector also includes a valve seat at or proximate to the second end portion of the body. When the valve is in the open position the sealing end portion is spaced apart from the valve seat, and when the valve is in the closed position the sealing end portion contacts at least a portion of the valve seat.
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Citations
36 Claims
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1. An injector for introducing and igniting fuel at an interface with a combustion chamber, the injector comprising:
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an injector body including— a base portion configured to receive fuel into the injector body; a nozzle portion opposite the base portion, wherein the nozzle portion is configured to be positioned proximate to the combustion chamber for injecting fuel in the combustion chamber; a body insulator extending through at least a portion of the body; and a valve seat carried by the body insulator, wherein the valve seat is positioned at or proximate to the nozzle portion; a fuel flow path extending through the body; and a core assembly extending through the body coaxially with at least a portion of the fuel flow path, the core assembly including— an ignition rod extending from the base portion to the nozzle portion; an ignition insulator coaxially disposed over the ignition rod, the ignition insulator extending from the base portion at least partially into the nozzle portion; and a valve coaxially disposed over the ignition insulator, wherein the valve includes a sealing head adjacent to the valve seat, and wherein the valve moves along the ignition insulator between an open position in which the sealing head is spaced apart from the valve seat to allow fuel to exit the fuel flow path, and a closed position in which the sealing head at least partially contacts the valve seat to close the fuel flow path. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. An injector for introducing fuel into a combustion chamber, the injector comprising:
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a body having a first end portion opposite a second end portion, wherein the second end portion is configured to be positioned adjacent to an interface of the combustion chamber and the first end portion is configured to be spaced apart from the combustion chamber; an ignition conductor extending through the body from the first end portion to the second end portion, wherein the ignition conductor is configured to transmit ignition energy from the first end portion to the second end portion and generate an ignition event proximate to the interface of the combustion chamber; an insulator extending longitudinally along the ignition conductor and surrounding at least a portion of the ignition conductor; a valve extending longitudinally along the insulator from the first end portion to the second end portion, wherein the valve includes a sealing end portion, and wherein the valve is movable along the insulator between an open position and a closed position; and a valve seat at or proximate to the second end portion of the body, wherein when the valve is in the open position the sealing end portion is spaced apart from the valve seat and when the valve is in the closed position the sealing end portion contacts at least a portion of the valve seat. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. An injector for introducing fuel into a combustion chamber, the injector comprising:
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a nozzle portion configured to be positioned adjacent to an interface with the combustion chamber; a base portion opposite the nozzle portion and configured to be spaced apart from the nozzle portion; an ignition conductor at least partially extending through the nozzle portion; an ignition insulator coaxially disposed over at least a portion of the ignition conductor; and a valve positioned in the nozzle portion and coaxially disposed over at least a portion of the ignition insulator and radially spaced apart from at least a portion of the ignition insulator, wherein the valve includes— a first end portion that remains generally stationary with reference to the ignition insulator; and a second sealing end portion positioned between the first end portion and the combustion chamber, wherein the second sealing end portion is at least partially deformable in a direction radially away from the ignition insulator to move from a closed position to an open position to inject fuel from the nozzle portion into the combustion chamber. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36)
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Specification