US 12,191,637 B1
Spark plug with cooling features and method of manufacturing the same
Daniel Koenig, Rodental (DE)
Assigned to FEDERAL-MOGUL IGNITION GMBH, Neuhaus-Schierschnitz (DE)
Filed by FEDERAL-MOGUL IGNITION GMBH, Neuhaus-Schierschnitz (DE)
Filed on Jun. 14, 2024, as Appl. No. 18/743,823.
Int. Cl. H01T 13/16 (2006.01); H01T 13/32 (2006.01); H01T 13/39 (2006.01); H01T 21/02 (2006.01)
CPC H01T 13/16 (2013.01) [H01T 13/32 (2013.01); H01T 13/39 (2013.01); H01T 21/02 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A spark plug, comprising:
a shell having an axial bore;
an insulator at least partially disposed within the axial bore of the shell and having an axial bore;
a center electrode at least partially disposed within the axial bore of the insulator;
a ground electrode attached to the shell and having an electrode base; and
a cooling feature having a first internal cooling passage formed within the electrode base of the ground electrode, a first heat conducting material situated within the first internal cooling passage, a second internal cooling passage formed within the shell, and a second heat conducting material situated within the second internal cooling passage,
wherein the first internal cooling passage is aligned with the second internal cooling passage and the first heat conducting material is thermally coupled to the second heat conducting material so that, during operation, the cooling feature can remove heat from an area near a sparking surface.