EP 0648978 A3 19960724 - Ceramic glow plug.
Title (en)
Ceramic glow plug.
Title (de)
Keramische Glühkerze.
Title (fr)
Bougie à incandescence en céramique.
Publication
Application
Priority
- JP 26943193 A 19931004
- JP 26943293 A 19931004
Abstract (en)
[origin: EP0648978A2] This invention provides a ceramic glow plug of current self-control type with a stable strength and a high-temperature strength resistant to thermal shocks. In this ceramic glow plug, the ceramic pipe (2) is secured to the hollow body (1) having the electrode (10) and is formed with the conductive printed layer (8) on its outer surface. One end of the pipe (2) is sealed by the ceramic filler (4) to form the hollow portion (9) inside the pipe In the hollow portion (9) sealed with N2 gas, the tungsten wire (3) is installed, with one end (7) connected to the conductive printed layer (8) and the other end (16) to the electrode (10). The outer circumferential surface (13) of the pipe (2) is formed with the ceramic outer surface coating layer (5). When the tungsten wire (3) and the conductive printed layer (8) are supplied with electricity, the conductive printed layer (8) functions as the heater portion (12) and the tungsten wire (3) as the current control portion (6). <IMAGE>
IPC 1-7
IPC 8 full level
F23Q 7/00 (2006.01)
CPC (source: EP)
F23Q 7/001 (2013.01)
Citation (search report)
- [A] WO 9118244 A1 19911128 - CATERPILLAR INC [US]
- [A] WO 9118245 A1 19911128 - CATERPILLAR INC [US]
- [A] GB 2092670 A 19820818 - BOSCH GMBH ROBERT
- [A] PATENT ABSTRACTS OF JAPAN vol. 7, no. 165 (M - 230) 20 July 1958 (1958-07-20)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0648978 A2 19950419; EP 0648978 A3 19960724; EP 0648978 B1 20000719; DE 648978 T1 19960627; DE 69425308 D1 20000824
DOCDB simple family (application)
EP 94307223 A 19941003; DE 69425308 T 19941003; DE 94307223 T 19941003