Spark plug having multi-layer sparking component attached to ground electrode
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United States of America Patent
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Jun 14, 2016
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N/A
app pub date -
Mar 7, 2014
filing date -
Mar 12, 2013
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Abstract
A spark plug having a metal shell, an insulator, a center electrode, a ground electrode, and a multi-layer sparking component. The multi-layer sparking component is attached at a firing end of the ground electrode and includes a thin precious metal layer formed overtop a base metal layer and, according to some embodiments, overhangs the end of the ground electrode. The precious metal and base metal layers may be pre-manufactured together as a bi-metal ribbon, sheet or laminate before the multi-layer sparking component is attached to the ground electrode.
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