US 12,241,401 B2
Internal combustion engine and a method for operating an internal combustion engine
Nikolaus Spyra, Innsbruck (AT); Herbert Schaumberger, Muenster (AT); Jochen Fuchs, Wattens (AT); and Wolfgang Fimml, Maurach in Tirol (AT)
Assigned to Innio Jenbacher GmbH & Co OG, Jenbach (AT)
Appl. No. 17/920,914
Filed by INNIO Jenbacher GmbH & Co OG, Jenbach (AT)
PCT Filed May 6, 2020, PCT No. PCT/AT2020/060182
§ 371(c)(1), (2) Date Oct. 24, 2022,
PCT Pub. No. WO2021/232076, PCT Pub. Date Nov. 25, 2021.
Prior Publication US 2023/0167762 A1, Jun. 1, 2023
Int. Cl. F02B 19/10 (2006.01); F02B 19/12 (2006.01); F02B 19/18 (2006.01); F02D 19/02 (2006.01); F02D 19/06 (2006.01); F02B 43/10 (2006.01)
CPC F02B 19/1038 (2013.01) [F02B 19/1052 (2013.01); F02B 19/1057 (2013.01); F02B 19/12 (2013.01); F02B 19/18 (2013.01); F02D 19/024 (2013.01); F02D 19/0644 (2013.01); F02B 2043/106 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system, comprising:
an internal combustion engine, comprising:
a main combustion chamber comprising at least one intake valve and at least one exhaust valve, wherein at least one intake port fluidically connected to an intake manifold is configured to supply an air and/or an air-fuel-mixture to the main combustion chamber via the at least one intake valve;
a pre-chamber in fluid connection with the main combustion chamber, wherein the pre-chamber is in fluid connection with the intake port and/or the intake manifold through a supply line, and the pre-chamber is configured to support an ignition source; and
at least one fuel injector is arranged in the intake port and/or in the intake manifold and/or in the main combustion chamber, wherein the at least one fuel injector is configured to enrich the air and/or air-fuel-mixture supplied to the main combustion chamber to have a lower ignition delay than an air-fuel-mixture supplied to the pre-chamber, and/or air or air-fuel-mixture can be supplied to the pre-chamber to have a higher ignition delay than an air-fuel-mixture supplied to the main combustion chamber.