EP 2118973 A1 20091118 - SPARK PLUG AND INSULATOR COMPOSED OF HIGH-PURITY ALUMINIUM OXIDE CERAMIC
Title (en)
SPARK PLUG AND INSULATOR COMPOSED OF HIGH-PURITY ALUMINIUM OXIDE CERAMIC
Title (de)
ZÜNDKERZE MIT EINEM ISOLATOR AUS HOCHREINER ALUMINIUMOXID-KERAMIK
Title (fr)
BOUGIE AVEC UN ISOLANT EN CÉRAMIQUE D'OXYDE D'ALUMINIUM À HAUTE PURETÉ
Publication
Application
Priority
- EP 2007010974 W 20071213
- DE 102006061907 A 20061220
Abstract (en)
[origin: US2010007260A1] A spark plug is described for Otto-cycle engines having a metallic spark plug body, having a center electrode, having a ceramic insulator, which is arranged between the center electrode and the body and is based on aluminium oxide, and having at least one earth electrode. The invention provides for the insulator to be composed of 0.01% by weight to 1% by weight of magnesium oxide, at most 0.3% by weight of natural and/or impurities, with the rest being aluminium oxide, and being formed by solid-phase sintering so that it is very largely free of glass phases.
IPC 8 full level
H01T 13/38 (2006.01); H01T 21/02 (2006.01)
CPC (source: EP KR US)
H01T 13/38 (2013.01 - EP KR US); H01T 21/02 (2013.01 - EP KR US)
Citation (search report)
See references of WO 2008074438A1
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 LV MC MT NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
US 2010007260 A1 20100114; AT E467930 T1 20100515; DE 102006061907 A1 20080626; DE 502007003810 D1 20100624; EP 2118973 A1 20091118; EP 2118973 B1 20100512; JP 2010514114 A 20100430; KR 20090098972 A 20090918; WO 2008074438 A1 20080626
DOCDB simple family (application)
US 44811607 A 20071213; AT 07856717 T 20071213; DE 102006061907 A 20061220; DE 502007003810 T 20071213; EP 07856717 A 20071213; EP 2007010974 W 20071213; JP 2009541853 A 20071213; KR 20097013565 A 20071213