Glow plug
AssigneeBorgWarner Ludwigsburg GmbH
InventorsMichael Haussner, Ralf Ehlert
Life of this patent
Estimating the term…
Abstract
Described is a glow plug having a casing and a ceramic glow pin protruding out of the casing. The glow pin has a tapered end section inside the casing. A metal protective tube protrudes out of the casing and surrounds the glow pin. The protective tube has a widened end section inside the casing. A center electrode is arranged in the casing and electrically connected to the glow pin. The glow plug includes an annular or sleeve-shaped contact element through which the glow pin projects and to which the tapered end section of the glow pin is soldered. The contact element is at least partly surrounded by the widened end section of the protective tube.
Claims12
A glow plug, comprising:
- a casing;
- a ceramic glow pin protruding out of the casing and having a tapered end section inside the casing;
- a metal protective tube protruding out of the casing and surrounding the glow pin, the protective tube having a widened end section inside the casing;
- a center electrode arranged in the casing and electrically connected to the glow pin;
- and
- an annular or sleeve-shaped contact element through which the glow pin projects and to which the tapered end section of the glow pin is soldered, the contact element being at least partly surrounded by the widened end section of the protective tube.
Dependencies are inferred from the claim text.