EP 0602745 A1 19940622 - Dual control coil glow plug for diesel engines.
Title (en)
Dual control coil glow plug for diesel engines.
Title (de)
Glühkerze mit zwei Regelwendeln für Dieselmotoren.
Title (fr)
Bougie à incandescence à deux enroulements de commande pour des moteurs Diesel.
Publication
Application
Priority
IT MI922903 A 19921218
Abstract (en)
A dual current control coil glow plug (10) for warming up Diesel engines. The glow plug comprises a metal body (11) from which a tubular metal sheath (13) extends, the sheath containing a heating element comprising a dual coil (14,16) electric resistance embedded in a compacted powder of an electrically insulating and thermally conductive material; the two coils (14,16) of the heating element are made with wires of the same material having a high positive temperature coefficient so as to provide a dual differentiated control of the current absorbed during the warm-up and post-heating phases, while maintaining warm-up times and temperatures at optimal values. <IMAGE>
IPC 1-7
IPC 8 full level
CPC (source: EP)
F23Q 7/001 (2013.01); F02B 3/06 (2013.01)
Citation (search report)
- [X] EP 0365258 A1 19900425 - WELLMAN AUTOMOTIVE PROD [GB]
- [XA] GB 2216952 A 19891018 - WELLMAN AUTOMOTIVE PRODUCTS LI [GB]
- [A] FR 2131437 A5 19721110 - BOSCH
- [A] EP 0392181 A1 19901017 - BOSCH GMBH ROBERT [DE]
- [A] EP 0240650 A1 19871014 - B 80 SRL [IT]
Designated contracting state (EPC)
BE DE ES FR GB IT
DOCDB simple family (publication)
EP 0602745 A1 19940622; IT 1258675 B 19960227; IT MI922903 A0 19921218; IT MI922903 A1 19940618
DOCDB simple family (application)
EP 93203524 A 19931215; IT MI922903 A 19921218