Invention Grant
US08569940B2 Spark plug having ground electrode tip attached to free end surface of ground electrode 有权
火花塞具有接地电极尖端连接到接地电极的自由端面

Spark plug having ground electrode tip attached to free end surface of ground electrode
Abstract:
A spark plug includes a metallic shell, an insulator, a center electrode body, a ground electrode body, and a ground electrode tip. In one embodiment, the ground electrode tip includes a non-precious metal piece and a precious metal piece attached to each other. The non-precious metal piece has a side surface attached to a free end surface of the ground electrode body.
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