Glow plug with protective coating
AssigneeBeru Ruprecht GmbH & Co. KG
InventorsGabriele Schmidt, Karl-Heinz Schmidt, Hans Delesky
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Abstract
Glow plug with a heating rod formed of an inner pole (2) and a glow tube (5), in which a heating element (3) is located which is electrically connected to the inner pole (2). The glow tube (5) is provided with protective coating (6) at least in the area of its tip. The protective coating is selected from the group consisting of materials which include NiCrAlY, CoCrAlY, CoNiCrAlY, NiCrAl, NiCr, NiCrFe and NiCrWCo.
Claims9
Glow plug with a heating rod formed of an inner pole, a glow tube, and a heating element, said heating element being electrically connected to the inner pole and being located in said glow tube;
- wherein the glow tube is provided with a coating of a material which is selected from the group consisting of materials which include NiCrAlY, CoCrAlY, CoNiCrAlY, NiCrAl, NiCr, NiCrFe and NiCrWCo, said coating be provided at least in an area of the glow tube in which the heating element is located.
Dependencies are inferred from the claim text.