US 12,448,913 B2
Pre-chamber assembly
Wolfgang Fimml, Maurach in Tirol (AT); Rafal Pyszczek, Warsaw (PL); Tobias Triendl, Rinn (AT); Nikolaus Spyra, Innsbruck (AT); and Philipp Volgger, Innsbruck (AT)
Assigned to Innio Jenbacher GmbH & Co OG, Jenbach (AT)
Appl. No. 18/557,855
Filed by INNIO Jenbacher GmbH & Co OG, Jenbach (AT)
PCT Filed Apr. 28, 2021, PCT No. PCT/AT2021/060150
§ 371(c)(1), (2) Date Oct. 27, 2023,
PCT Pub. No. WO2022/226553, PCT Pub. Date Nov. 3, 2022.
Prior Publication US 2024/0209769 A1, Jun. 27, 2024
Int. Cl. F02B 19/18 (2006.01); F02B 19/12 (2006.01); F02F 11/00 (2006.01)
CPC F02B 19/18 (2013.01) [F02B 19/12 (2013.01); F02F 11/002 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system, comprising:
a pre-chamber assembly for an internal combustion engine with a distal end, which protrudes into a main combustion chamber when the pre-chamber assembly is mounted in the internal combustion engine, and a proximal end, the pre-chamber assembly comprising:
a supply channel fluidically connected with a pre-chamber, wherein the supply channel is configured to supply air, fuel, or an air-fuel-mixture to the pre-chamber, wherein the supply channel is disposed on the proximal end of the pre-chamber assembly;
at least one transfer passage fluidically connecting the pre-chamber with the main combustion chamber when the pre-chamber assembly is mounted in the internal combustion engine; and
a riser passage, wherein the riser passage fluidically connects the pre-chamber with the at last one transfer passage, wherein the riser passage is oblique with respect to a longitudinal axis of the pre-chamber assembly;
an igniter configured to ignite an air-fuel-mixture in the pre-chamber, wherein the igniter is arranged on the proximal end of the pre-chamber assembly, wherein the igniter comprises a sealing area and a mounting portion disposed directly about a wall of the igniter, the sealing area is configured to seal the igniter to the pre-chamber assembly between the mounting portion and the pre-chamber, and the sealing area of the igniter is arranged between the mounting portion and an end portion of the igniter facing the pre-chamber.