Global Patent Index - EP 1589546 A1

EP 1589546 A1 20051026 - Ignition coil having improved thermal stress resistance

Title (en)

Ignition coil having improved thermal stress resistance

Title (de)

Zündspule mit verbessertem Widerstand gegen thermische Spannungen

Title (fr)

Bobine d'allumage avec résistance accrue à la fatigue thermique

Publication

EP 1589546 A1 20051026 (EN)

Application

EP 04009540 A 20040422

Priority

EP 04009540 A 20040422

Abstract (en)

The present invention relates to an ignition coil apparatus housing several ignition coils and ignition coils provided with a coating with electrical conductive, resilient material properties. An ignition coil in question includes a magnetic core of a magnetically permeable material, a high-voltage winding and a low-voltage winding in order to allow generation of a high-voltage signal for being supplied to a spark plug of an internal combustion engine. The magnetic core has at least one axis (B', C', D', D"), coaxially to which each the high-voltage winding and the low-voltage winding are arranged. The low-voltage winding is in particular arranged outwardly to the high-voltage winding .The ignition coil is provided outwardly with the aforementioned coating to avoid or at least minimize mechanical stress resulting from thermal-mechanical elongation effects and to protect against potential internal discharges. <IMAGE>

IPC 1-7

H01F 38/12; H01F 27/02

IPC 8 full level

H01F 27/36 (2006.01); H01F 38/12 (2006.01); H01F 27/02 (2006.01)

CPC (source: EP US)

H01F 27/36 (2013.01 - EP); H01F 27/366 (2020.08 - EP US); H01F 38/12 (2013.01 - EP); H01F 27/022 (2013.01 - EP)

Citation (search report)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

DOCDB simple family (publication)

EP 1589546 A1 20051026

DOCDB simple family (application)

EP 04009540 A 20040422