EP 0893599 A1 19990127 - Ignition coil with open core and central air gap
Title (en)
Ignition coil with open core and central air gap
Title (de)
Zündspule mit offenem Kern und zentralem Luftspalt
Title (fr)
Bobine d'allumage à noyau ouvert et entrefer central
Publication
Application
Priority
EP 97830372 A 19970721
Abstract (en)
An ignition coil intended for being mounted directly on a spark plug comprises a laminated magnetic core (30) of elongated shape along a longitudinal axis (31) of said coil, together with a low-voltage primary winding (20p) coaxial with the magnetic core (30) and arranged in such a manner as to generate magnetic flux lines substantially parallel to said longitudinal axis (31), and a high-voltage secondary winding (20s) likewise coaxial with the magnetic core (30) and arranged in such a manner as to interlink with said magnetic flux lines (44). The said core (30) comprises at least two sections (40a, 40b) in line with each other along its longitudinal axis (31) and axially separated, by a separation space (42) of nonmagnetic material. <IMAGE>
IPC 1-7
IPC 8 full level
H01F 38/12 (2006.01)
CPC (source: EP)
H01F 38/12 (2013.01); H01F 2038/122 (2013.01)
Citation (search report)
- [X] GB 752570 A 19560711 - AUTO UNION BERLIN G M B H
- [X] DE 1007116 B 19570425 - BOSCH GMBH ROBERT
- [A] DE 2154792 A1 19721116
- [A] US 1801608 A 19310421 - LEE THOMAS L
- [A] PATENT ABSTRACTS OF JAPAN vol. 006, no. 025 (E - 094) 13 February 1982 (1982-02-13)
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
DOCDB simple family (application)
EP 97830372 A 19970721