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US 9,856,848 B2Granted
Quiescent chamber hot gas igniter
AssigneeWoodward, Inc.
InventorsDomenico Chiera, Gregory James Hampson
Life of this patent
Estimating the term…
Abstract
An engine has an ignition source in a combustion chamber of the engine. An inner housing is provided that includes one or more jet apertures and defines an inner chamber containing the ignition source. An outer housing (or pre-chamber) is provided that includes one or more jet apertures in communication with the main combustion chamber and defines an outer chamber containing the inner housing.
Claims23
An igniter plug for an internal combustion engine, the igniter plug comprising:
- a plug body adapted to couple to the internal combustion engine;
- an ignition source carried on the plug body;
- an inner housing comprising a jet aperture through the inner housing and defining an inner chamber containing the ignition source;
- an outer housing around the inner housing, the outer housing comprising a second jet aperture and defining an outer chamber containing the inner chamber, where the jet aperture of the inner housing extends between the inner chamber and the outer chamber and is configured to jet burning air-fuel mixture from the inner chamber into the outer chamber;
- and
- a valve closure in the inner housing and moveable with respect to the jet aperture of the inner housing between sealing the inner chamber against flow through the jet aperture of the inner housing and allowing flow out of the inner chamber through the jet aperture of the inner housing, where the valve closure comprises an aperture extending therethrough configured to communicate fluid into the inner chamber while the valve closure is sealing passage of fluid through the jet aperture of the inner housing.
3 more elements
An igniter plug for an internal combustion engine, the igniter plug comprising:
- a plug body adapted to couple to the internal combustion engine;
- an ignition source carried on the plug body;
- an inner housing comprising a jet aperture through the inner housing and defining an inner chamber containing the ignition source;
- an outer housing around the inner housing, the outer housing comprising a second jet aperture and defining an outer chamber containing the inner chamber, where the jet aperture of the inner housing extends between the inner chamber and the outer chamber and is configured to jet burning air-fuel mixture from the inner chamber into the outer chamber;
- and
- a valve closure in the inner housing and moveable with respect to the jet aperture of the inner housing between sealing the inner chamber against flow through the jet aperture of the inner housing and allowing flow out of the inner chamber through the jet aperture of the inner housing, where the valve closure comprises an aperture extending therethrough configured to communicate fluid into the inner chamber while the valve closure is sealing passage of fluid through the jet aperture of the inner housing, and
- where the inner housing is substantially elongate and has an open axial end, and the jet aperture of the inner housing is oriented substantially laterally.
4 more elements
An engine, comprising:
- an ignition source;
- an inner housing comprising a jet aperture through the inner housing and defining an inner chamber containing the ignition source;
- an outer housing comprising a second jet aperture and defining an outer chamber containing the inner housing;
- a valve closure moveable with respect to the jet aperture of the inner housing in response to a signal to seal or allow passage of fluid out of the inner housing through the jet aperture of the inner housing;
- and
- an aperture through the valve closure to communicate fluid from a combustion chamber into the inner chamber while the valve closure is sealing passage of fluid through the jet aperture of the inner housing.
3 more elements
Dependencies are inferred from the claim text.