EP 1769197 A1 20070404 - GLOW PLUG AND METHODS FOR THE PRODUCTION THEREOF
Title (en)
GLOW PLUG AND METHODS FOR THE PRODUCTION THEREOF
Title (de)
GLÜHKERZE UND VERFAHREN ZU IHRER HERSTELLUNG
Title (fr)
BOUGIE DE PRECHAUFFAGE ET SON PROCEDE DE FABRICATION
Publication
Application
Priority
- DE 2005001079 W 20050610
- DE 102004029322 A 20040611
- DE 102004033153 A 20040629
Abstract (en)
[origin: WO2005121647A1] The invention relates to a glow plug and methods for the production thereof. According to the invention, said glow plug is made from an electrically conducting and an electrically nonconducting element, sintered composite ceramic material being used for the production thereof. The disclosed glow plugs can preferably be used for fuel-operated auxiliary heaters of motor vehicles. The aim of the invention is to be able to produce said glow plugs in an inexpensive and flexible manner while providing the same with a longer service life and greater resistance to oxidation. Said aim is achieved by surrounding two opposite sides of the conducting element with the electrically nonconducting element while providing the conducting element with an expanded cross-section in the distal area, the ratio of the expanded cross-section to the cross-section of the electrically conducting element ranging between 2.5 and 5 to 1. Sixty to 85 percent of the surface of the proximal heating area of the electrically conducting element, which has a reduced cross-section, are covered by the material of the electrically nonconducting element.
IPC 8 full level
CPC (source: EP US)
C04B 35/58092 (2013.01 - EP US); C04B 35/584 (2013.01 - EP US); F23Q 7/001 (2013.01 - EP US); H05B 3/141 (2013.01 - EP US); C04B 2235/3224 (2013.01 - EP US); C04B 2235/3225 (2013.01 - EP US); C04B 2235/3873 (2013.01 - EP US); C04B 2235/3891 (2013.01 - EP US); C04B 2235/6023 (2013.01 - EP US); C04B 2235/72 (2013.01 - EP US); C04B 2235/75 (2013.01 - EP US); C04B 2235/77 (2013.01 - EP US); C04B 2235/80 (2013.01 - EP US); F23Q 2007/004 (2013.01 - EP US); H05B 2203/027 (2013.01 - EP US)
Citation (search report)
See references of WO 2005121647A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2005121647 A1 20051222; CN 1973163 A 20070530; CN 1973163 B 20110216; DE 102004033153 A1 20060209; DE 102004033153 B4 20070329; EP 1769197 A1 20070404; JP 2008501929 A 20080124; JP 4815440 B2 20111116; US 2009212035 A1 20090827
DOCDB simple family (application)
DE 2005001079 W 20050610; CN 200580019098 A 20050610; DE 102004033153 A 20040629; EP 05763780 A 20050610; JP 2007526190 A 20050610; US 62912205 A 20050610