A method for producing a spark plug including a spark plug electrode assembly having a center electrode and a ground electrode surrounding the center electrode. The spark plug electrode assembly is formed from a one-piece spark plug electrode base body made of spark plug electrode material, and the ground electrodeand the center electrode are connected to one another by a connecting region, wherein the center electrode and an inner surface of the ground electrode are polygonal. The method includes: a) connecting the spark plug electrode assembly to a spark plug base body, and b) removing the connecting region between the ground electrode and the center electrode.

A method for producing a spark plug for internal combustion engines, in particular for gas-powered internal combustion engines, having a metallic shell, a ceramic insulator held in the shell, a center electrode embedded in the insulator, at least one ground electrode attached to a front end of the shell, an end piece made of a precious metal and/or alloy attached to a front end of the center electrode, and a counterpart made of a precious metal and/or alloy attached to the ground electrode opposite the end piece, between which is a spark gap with a nominal width. The spark gap is produced initially with a width that is smaller, at least in places, than the nominal width, and is subsequently brought to its nominal width by removing material from at least one of the two surfaces of the end piece and the counterpart that delimit the spark gap.

A method for producing a spark plug for internal combustion engines, in particular for gas-powered internal combustion engines, having a metallic shell, a ceramic insulator held in the shell, a center electrode embedded in the insulator, at least one ground electrode attached to a front end of the shell, an end piece made of a precious metal and/or alloy attached to a front end of the center electrode, and a counterpart made of a precious metal and/or alloy attached to the ground electrode opposite the end piece, between which is a spark gap with a nominal width. The spark gap is produced initially with a width that is smaller, at least in places, than the nominal width, and is subsequently brought to its nominal width by removing material from at least one of the two surfaces of the end piece and the counterpart that delimit the spark gap.

A spark plug having a longitudinal axis. The spark plug includes: a housing; an insulator disposed at least partly inside the housing; a center electrode disposed at least partly inside the insulator and has an electrode body and an ignition element that is disposed on the combustion chamber-side end of the electrode body and serves as an ignition surface, wherein the ignition element has a cylindrical shape with a round base and a longitudinal axis which extends parallel to the spark plug longitudinal axis; and at least one ground electrode having an ignition surface disposed inside the housing on the housing. The ground electrode and the center electrode are disposed such that they form a spark gap that extends radially with respect to the spark plug longitudinal axis, wherein a width of the spark gap is not greater than 0.3 mm. The spark gaps are completely inside the housing.

A spark plug, including a central electrode, a first ground electrode, which is situated in a curved shape having a horizontal area and an essentially vertical area, and at least one second ground electrode, which is situated adjacent to the central electrode in such a way that a distance between the first ground electrode and the central electrode is less than a distance between the second ground electrode and the central electrode.

A method for producing a spark plug for internal combustion engines, in particular for gas-powered internal combustion engines, having a metallic shell, a ceramic insulator held in the shell, a center electrode embedded in the insulator, at least one ground electrode attached to a front end of the shell, an end piece made of a precious metal and/or alloy attached to a front end of the center electrode, and a counterpart made of a precious metal and/or alloy attached to the ground electrode opposite the end piece, between which is a spark gap with a nominal width. The spark gap is produced initially with a width that is smaller, at least in places, than the nominal width, and is subsequently brought to its nominal width by removing material from at least one of the two surfaces of the end piece and the counterpart that delimit the spark gap.