Combustion chamber for high performance H2 direct injection engine
AssigneeSaudi Arabian Oil Company
InventorPatrick Gastaldi
Life of this patent
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Abstract
A hydrogen direct injection engine includes a cylinder and a combustion chamber positioned at a center of the cylinder, where an axis of the combustion chamber is approximately identical to an axis of the cylinder. The hydrogen direct injection engine also includes one or more intake valves positioned around the cylinder, one or more exhaust valves positioned around the cylinder, a cylinder head mounted across a top surface of the cylinder, and a fuel injector positioned vertically at the center of the cylinder. The hydrogen direct injection engine further includes a piston disposed within the cylinder, and a spark plug positioned between the one or more intake valves.
Claims18
A hydrogen direct injection engine, comprising:
- a cylinder;
- a combustion chamber positioned at a center of the cylinder, the combustion chamber having a domed portion;
- one or more intake valves in communication with the combustion chamber;
- one or more exhaust valves in communication with the combustion chamber;
- a cylinder head mounted across a top surface of the cylinder;
- a fuel injector positioned vertically along a central axis of the cylinder;
- a piston disposed within the cylinder;
- and
- a spark plug connected to and interfacing with the combustion chamber,
- wherein the domed portion of the combustion chamber is recessed within the cylinder head and positioned between the one or more intake valves and the one or more exhaust valves,
- wherein the fuel injector comprises an injection tip interfacing the domed portion and positioned at a recessed depth from an upper surface of the domed portion of the combustion chamber.
A hydrogen direct injection engine, comprising:
- a cylinder;
- a cylinder head mounted across a top surface of the cylinder;
- a combustion chamber provided in the cylinder,
- an intake valve positioned around the cylinder head and interfacing the combustion chamber;
- an exhaust valve positioned around the cylinder head and interfacing the combustion chamber;
- a domed portion of the combustion chamber recessed within the cylinder head and positioned between the intake valve and the exhaust valve;
- a fuel injector positioned vertically along a central axis of the cylinder;
- a piston disposed within the cylinder;
- and
- a spark plug interfacing the domed portion of the combustion chamber,
- wherein the fuel injector comprises an injection tip interfacing the domed portion and positioned at a recessed depth from an upper surface of the domed portion of the combustion chamber.
A method, comprising:
- providing a hydrogen direct injection engine,
- wherein the hydrogen direct injection engine comprises:
- a cylinder,
- a cylinder head with a flat fire deck sealing the cylinder,
- a domed combustion chamber recessed within a center of the cylinder head and positioned between one or more intake valves and one or more exhaust valves,
- a fuel injector positioned at the center of the domed combustion chamber, and
- a spark plug flush mounted in the cylinder head,
- wherein the fuel injector comprises an injection tip interfacing the domed portion and positioned at a recessed depth from an upper surface of the domed combustion chamber;
- injecting, during a compression stroke of the hydrogen direct injection engine, a volume of hydrogen into the domed combustion chamber using the fuel injector after a closure of an intake valve;
- mixing a mixture of the volume of hydrogen and air within the domed combustion chamber;
- and
- igniting the mixture using the spark plug.
Dependencies are inferred from the claim text.