US 12,215,655 B2
Internal combustion engine
Nikolaus Spyra, Innsbruck (AT); Wolfgang Fimml, Maurach in Tirol (AT); and Michael Url, Neufahrn (DE)
Assigned to Innio Jenbacher GmbH & Co OG, Jenbach (AT)
Appl. No. 18/556,334
Filed by INNIO Jenbacher GmbH & Co OG, Jenbach (AT)
PCT Filed Apr. 19, 2021, PCT No. PCT/AT2021/060127
§ 371(c)(1), (2) Date Oct. 19, 2023,
PCT Pub. No. WO2022/221889, PCT Pub. Date Oct. 27, 2022.
Prior Publication US 2024/0191677 A1, Jun. 13, 2024
Int. Cl. F02M 21/02 (2006.01); F02B 29/04 (2006.01); F02D 13/02 (2006.01); F02D 41/00 (2006.01); F02G 5/02 (2006.01); F02M 21/06 (2006.01)
CPC F02M 21/0206 (2013.01) [F02D 41/0027 (2013.01); F02M 21/0227 (2013.01); F02M 21/06 (2013.01); F02B 29/0493 (2013.01); F02D 13/0261 (2013.01); F02G 5/02 (2013.01)] 19 Claims
OG exemplary drawing
 
1. 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 intercooler coupled to the intake manifold;
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 cylindrical 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, the motion of the piston defining a variable volume geometry of the main combustion chamber having a geometrical compression ratio between 12 and 22;
at least one intake valve coupled to the intake manifold;
an igniter configured to start combustion of the combustion charge;
at least one ammonia source configured to provide ammonia to each piston-cylinder-unit of the plurality of piston-cylinder-units as part of the combustion charge:
via the intake manifold and the at least one intake valve as part of the gaseous medium in form of a mixture of at least air and ammonia; and/or
via at least one further valve provided to each piston-cylinder-unit of the plurality of piston-cylinder-units;
a hydrogen source configured to provide hydrogen to each piston-cylinder-unit of the plurality of piston-cylinder-units;
a controller configured to operate the internal combustion engine, wherein the controller is configured to at least:
control the at least one intercooler to provide the gaseous medium with a temperature of at least 60° C. to the intake manifold;
control a lambda of the combustion charge inside each main combustion chamber to be between 0.9 and 1.2; and
control the hydrogen provided to each piston-cylinder-unit of the plurality of piston-cylinder-units in a range of 0 to 2 mass %.