Advanced lean burn injector igniter system
An internal combustion engine with a piston having a piston head with a resonance cavity opening onto the head, and where a fuel nozzle located in a cylinder head is positioned to inject a fuel such as natural gas into the combustion chamber where resonance formed within the resonance cavity will ignite the fuel without the need of a spark plug. Inlet and exhaust ports in the cylinder head allow for air and combustion gas enter or leave the combustion chamber.
1. A piston for an internal combustion engine in which the engine is without a spark plug, the piston comprising:
a piston head;
a resonance cavity opening onto the piston head; and,
the resonance cavity having a shape to produce ignition of a fuel within the engine without a spark plug due to a resonance formed within the resonance cavity.
2. The piston of claim 1 , and further comprising:
the resonance cavity is rectangular in a cross sectional side view.
3. The piston of claim 1 , and further comprising:
the resonance cavity has a cavity length greater than the cavity width.
4. The internal combustion engine of claim 1 , and further comprising:
the fuel is natural gas.