US 12,241,402 B2
Prechamber spark plug for an internal combustion engine and internal combustion engine
Werner Holly, Merklingen (DE); Dietmar Bertsch, Aspach (DE); and Arnold Kaden, Remshalden (DE)
Assigned to Mercedes-Benz Group AG, Stuttgart (DE)
Appl. No. 18/546,894
Filed by Mercedes-Benz Group AG, Stuttgart (DE)
PCT Filed Jan. 26, 2022, PCT No. PCT/EP2022/051675
§ 371(c)(1), (2) Date Aug. 17, 2023,
PCT Pub. No. WO2022/175032, PCT Pub. Date Aug. 25, 2022.
Claims priority of application No. 10 2021 000 855.3 (DE), filed on Feb. 18, 2021.
Prior Publication US 2024/0369011 A1, Nov. 7, 2024
Int. Cl. F02B 19/12 (2006.01); F02B 19/18 (2006.01); H01T 13/04 (2006.01); H01T 13/54 (2006.01)
CPC F02B 19/12 (2013.01) [F02B 19/18 (2013.01); H01T 13/04 (2013.01); H01T 13/54 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A prechamber spark plug (22) for a combustion chamber (18) of an internal combustion engine (10), comprising:
a prechamber (30);
a first connecting conduit (36a); and
a second connecting conduit (36b);
wherein the prechamber (30) is fluidically connectable to the combustion chamber (18) via the first connecting conduit (36a) and the second connecting conduit (36b) such that a mixture of fuel and air is introducible out of the combustion chamber (18) and into the prechamber (30);
wherein the first connecting conduit (36a) has:
on an end (E1) opposite the prechamber (30) and via which the mixture of fuel and air is introducible into the first connecting conduit (36a), a first partial region (T1) extending in a peripheral direction of the first connecting conduit (36a) and having a bevel (F) of the first connecting conduit (36a); and
a second partial region (T2) connected to the first partial region (T1) in the peripheral direction of the first connecting conduit (36a) and extending in the peripheral direction of the first connecting conduit (36a) and in which the first connecting conduit (36a) is free of a bevel.