Patent · US Active

Glow plug and method for producing a glow pencil

US9074574B2 · kind B2 · utility

1Cited by

12References

7Claims

0Family size

Assignee

BorgWarner Ludwigsburg GmbH · DE

Inventors

Jochen Hammer · Stuttgart, DE
Michael Eberhardt · Bartlett, US
Johannes Hasenkamp · Ditzingen, DE
Stefan Knoll · Beverly Hills, US
Markus Schittkowski · Ludwigsburg, DE
Martin Allgaier · Ludwigsburg, DE

Key dates

Filing date	Nov 9, 2012
Grant date	Jul 7, 2015
Priority date	—
Expiry date	Aug 7, 2033

Classification

Technology area (CPC H)Electricity
CPC primaryH05B2203/027
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

The invention relates to a glow plug for a diesel engine, said glow plug comprising a ceramic glow pencil, which has a heating portion, and a housing, from which the glow pencil protrudes, wherein the glow pencil has a ceramic inner conductor, an insulation layer surrounding the inner conductor, and a ceramic outer conductor layer arranged on the insulation layer. In accordance with this disclosure, the outer conductor layer in the heating portion only partially covers the insulation layer.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.