Electric heating – Heating devices – Resistive element: igniter type
Reexamination Certificate
2005-08-09
2005-08-09
Evans, Robin O. (Department: 3742)
Electric heating
Heating devices
Resistive element: igniter type
C219S544000, C123S14500A, C123S14500A, C361S265000, C361S266000
Reexamination Certificate
active
06927362
ABSTRACT:
A sheathed element glow plug having an ionic current sensor and a method of operating such a sheathed element glow plug are provided. The sheathed element glow plug includes a housing and a rod-shaped heating element arranged in a concentric bore in the housing. The heating element has at least one insulation layer, a first feeder layer, and a second feeder layer, the first feeder layer and the second feeder layer being connected by a web on the combustion chamber-side end of the heating element, the first and second feeder layers and the web being made of an electrically conducting ceramic material, and the insulation layer being made of an electrically insulating ceramic material. The heating element has at least one ionic current detection electrode made of an electrically conducting ceramic material.
REFERENCES:
patent: 6483079 (2002-11-01), Sato et al.
patent: 34 28 377 (1986-02-01), None
patent: 0 353 196 (1990-01-01), None
patent: 0 834 652 (1998-04-01), None
Arnold Juergen
Haluschka Christoph
Kern Christoph
Evans Robin O.
Kenyon & Kenyon
Patel Vinod
Robert & Bosch GmbH
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