Spark plug and method for the production thereof
AssigneeBorgWarner BERU Systems GmbH
InventorsWerner Niessner, Christian Mayer, Alexander Schenk
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Abstract
A method for producing a spark plug which contains an inner conductor, an insulator surrounding the inner conductor, a spark plug body surrounding the insulator, and two electrodes forming an ignition gap. The first electrode is a center electrode connected to the inner conductor in an electrically conducting manner and the second electrode is a ground electrode connected to the spark plug body in an electrically conducting manner. An iridium component which contains more than 95 percent by weight of iridium is welded onto one of the electrodes. An iridium component that is punched out of an iridium sheet and has a thickness that is less in size than its diameter is also employed.
Claims21
A method for producing a spark plug comprising an inner conductor, an insulator surrounding the inner conductor, a spark plug body surrounding the insulator, and two electrodes forming an ignition gap, wherein the first electrode is a center electrode connected to the inner conductor in an electrically conducting manner and the second electrode is a ground electrode connected to the spark plug body in an electrically conducting manner,
- wherein, said method comprises the steps of welding an iridium component comprising more than 95 percent by weight of iridium onto one of the electrodes, and punching said iridium component out of an iridium sheet, wherein the thickness of said iridium component is less in size than the diameter of said iridium component.
An iridium component which consists of more than 95 percent by weight of iridium, for being welded onto at least one electrode of a spark plug which contains an inner conductor, an insulator surrounding the inner conductor, a spark plug body surrounding the insulator, and two electrodes forming an ignition gap, wherein the first electrode is a center electrode connected to the inner conductor in an electrically conducting manner and the second electrode is a ground electrode connected to the spark plug body in an electrically conducting manner, wherein the iridium component is punched out of an iridium sheet such that the thickness of the iridium component is less in size than its diameter.
A spark plug which contains an inner conductor, an insulator surrounding the inner conductor, a spark plug body surrounding the insulator, and two electrodes forming an ignition gap, wherein the first electrode is a center electrode connected to the inner conductor in an electrically conducting manner and the second electrode is a ground electrode connected to the spark plug body in an electrically conducting manner, and wherein an iridium component is adjacent to the ignition gap, and is arranged at least at one of the electrodes, wherein said iridium component consists of more than 95 percent by weight of iridium, for being welded onto at least one electrode of a spark plug which contains an inner conductor, an insulator surrounding the inner conductor, a spark plug body surrounding the insulator, and two electrodes forming an ignition gap, wherein the first electrode is a center electrode connected to the inner conductor in an electrically conducting manner and the second electrode is a ground electrode connected to the spark plug body in an electrically conducting manner, wherein the iridium component is punched out of an iridium sheet such that the thickness of the iridium component is less in size than its diameter.
Dependencies are inferred from the claim text.