EP 0566335 A3 19941102 - Switch mode ignition coil driver and method.
Title (en)
Switch mode ignition coil driver and method.
Title (de)
Geschalteter Zündspulentreiber und Methode.
Title (fr)
Circuit d'attaque en commutation pour bobine d'allumage et méthode.
Publication
Application
Priority
US 86815492 A 19920414
Abstract (en)
[origin: EP0566335A2] A switch mode ignition coil driver includes a means (113) for sensing flyback voltage (195) at the primary winding (103) of the ignition coil (102), and providing a flyback sense voltage (118) indicative of the flyback voltage (195). A means (147) senses current (193) in the primary winding (103) of the ignition coil (102) and provides a current sense voltage (149) indicative of the sensed primary winding current (193). Control means (105,119,129,137,151) is coupled to the means (113) for sensing flyback voltage (195) and the means (147) for sensing current for providing an increasing current through the primary winding (103) of the ignition coil (102) when the flyback sense voltage (118) exceeds a predetermined limit and decreasing this current through the primary winding (103) of the ignition coil (102) when the current sense voltage (149) exceeds another predetermined limit. Further, a corresponding method is disclosed. <IMAGE>
IPC 1-7
IPC 8 full level
F02P 3/05 (2006.01); F02P 3/055 (2006.01); F02P 17/10 (2006.01)
CPC (source: EP)
F02P 3/053 (2013.01); F02P 3/0554 (2013.01); F02P 17/10 (2013.01)
Citation (search report)
- [XA] US 4944281 A 19900731 - SUQUET MICHEL [FR]
- [XA] GB 2024941 A 19800116 - BOSCH GMBH ROBERT
- [PA] EP 0526219 A2 19930203 - MOTOROLA INC [US]
- [A] EP 0447975 A1 19910925 - MARELLI AUTRONICA [IT]
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
DOCDB simple family (application)
EP 93302809 A 19930408