Back to results
US 12,624,669 B2Granted
Internal combustion engine
AssigneeInnio Jenbacher GmbH & Co OG
InventorsNikolaus Spyra, Wolfgang Fimml
Life of this patent
Estimating the term…
Abstract
An internal combustion engine includes an intake manifold, at least one cylinder head with a plurality of piston-cylinder-units, at least one ammonia source, and at least one hydrogen source. Each piston-cylinder-unit includes at least a main combustion chamber, at least one intake valve, a prechamber coupled to the main combustion chamber, and an ignition device in the prechamber. The at least one ammonia source is configured to provide ammonia to each piston-cylinder unit. The at least one hydrogen source is configured to provide hydrogen to each prechamber, wherein the at least one hydrogen source includes at least one reformer for cracking ammonia.
Claims20
A system, comprising:
- an internal combustion engine, comprising:
- an intake manifold configured to provide a gaseous medium to a plurality of piston-cylinder-units;
- at least one cylinder head with the plurality of piston-cylinder-units, each piston-cylinder-unit of the plurality of piston-cylinder-units having at least:
- a main combustion chamber configured to combust a combustion charge, wherein a volume of the main combustion chamber is defined by the at least one cylinder head and a reciprocally moving piston;
- at least one intake valve configured to couple the main combustion chamber to the intake manifold;
- a prechamber coupled to the main combustion chamber;
- an igniter arranged in the prechamber, wherein the igniter is configured to start combustion of the combustion charge indirectly via flame torches which enter the main combustion chamber from the prechamber and are created by an ignition of an ignitable air-fuel-mixture inside the prechamber;
- at least one ammonia source configured to provide ammonia to each piston-cylinder-unit of the plurality of piston-cylinder-units:
- via the intake manifold and the at least one intake valve as part of gaseous medium in form of a mixture of at least air and ammonia as part of the combustion charge;
- and
- via at least one prechamber valve provided to the prechamber;
- at least one hydrogen source configured to provide hydrogen to the prechamber via the at least one prechamber valve of each piston-cylinder-unit of the plurality of piston-cylinder-units, wherein the at least one hydrogen source comprises at least one reformer configured to crack ammonia;
- and
- a controller configured to at least control an actuator to control a ratio of hydrogen to ammonia of hydrogen-enriched ammonia provided to the prechamber.
11 more elements
A system, comprising:
- at least one ammonia source configured to provide ammonia to each piston-cylinder-unit of a plurality of piston-cylinder-units of an internal combustion engine:
- via an intake manifold and at least one intake valve as part of a gaseous medium in form of a mixture of at least air and ammonia as part of a combustion charge;
- and
- via at least one prechamber valve provided to a prechamber coupled to a main combustion chamber of the internal combustion engine;
- at least one hydrogen source configured to provide hydrogen to the prechamber via the at least one prechamber valve of each piston-cylinder-unit of the plurality of piston-cylinder-units, wherein the at least one hydrogen source comprises at least one reformer configured to crack ammonia;
- and
- a controller configured to at least control an actuator to control a ratio of hydrogen to ammonia of hydrogen-enriched ammonia provided to the prechamber.
4 more elements
A method, comprising:
- supplying, via at least one ammonia source, ammonia to each piston-cylinder-unit of a plurality of piston-cylinder-units of an internal combustion engine:
- via an intake manifold and at least one intake valve as part of a gaseous medium in form of a mixture of at least air and ammonia as part of a combustion charge;
- and
- via at least one prechamber valve provided to a prechamber coupled to a main combustion chamber of the internal combustion engine;
- supplying, via at least one hydrogen source, hydrogen to the prechamber via the at least one prechamber valve of each piston-cylinder-unit of the plurality of piston-cylinder-units, wherein the at least one hydrogen source comprises at least one reformer configured to crack ammonia;
- and
- controlling, via a controller, an actuator to control a ratio of hydrogen to ammonia of hydrogen-enriched ammonia provided to the prechamber.
4 more elements
Dependencies are inferred from the claim text.