Integrated fuel injector igniters suitable for large engine applications and associated methods of use and manufacture
First Claim
1. An injector igniter for replacing a diesel fuel injector in an internal combustion engine, the injector igniter comprising:
- an injector body configured to receive fuel and deliver the fuel into a combustion chamber of the internal combustion engine;
an ignition rod extending through at least a portion of the injector body;
an ignition insulator coaxially disposed over at least a portion of the ignition rod;
a valve coaxially disposed over at least a portion of the ignition insulator and operable from an open position to a closed position; and
a driver configured to actuate the valve to move longitudinally relative to the ignition insulator to move the valve between the open position and the closed position.
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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.
226 Citations
20 Claims
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1. An injector igniter for replacing a diesel fuel injector in an internal combustion engine, the injector igniter comprising:
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an injector body configured to receive fuel and deliver the fuel into a combustion chamber of the internal combustion engine; an ignition rod extending through at least a portion of the injector body; an ignition insulator coaxially disposed over at least a portion of the ignition rod; a valve coaxially disposed over at least a portion of the ignition insulator and operable from an open position to a closed position; and a driver configured to actuate the valve to move longitudinally relative to the ignition insulator to move the valve between the open position and the closed position. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An injector igniter comprising:
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an injector body positionable at least partially within an injector port in an internal combustion engine; a cylindrical ignition rod positioned at least partially within the injector body; a cylindrical ignition insulator encircling at least a portion of the cylindrical ignition rod; a valve encircling at least a portion of the cylindrical ignition insulator and operable from an open position to a closed position; and a driver configured to actuate the valve to move longitudinally relative to the cylindrical ignition insulator to move the valve between the open position and the closed position. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A method for injecting and igniting fuel in an internal combustion engine, the method comprising:
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introducing fuel into a body of an injector igniter; longitudinally moving a valve relative to an ignition insulator from a closed position to an open position to release the fuel into a combustion chamber of the internal combustion engine, wherein the valve is coaxially disposed over the ignition insulator; and conducting an electrical signal via an ignition rod to ignite the fuel, wherein the ignition insulator is coaxially disposed over the ignition rod. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification