EP 1010867 A1 20000621 - A voltage-regulator circuit for the electromagnetic driving of the valves of an internal combustion engine
Title (en)
A voltage-regulator circuit for the electromagnetic driving of the valves of an internal combustion engine
Title (de)
Spannungsregelschaltung für elektromagnetische Hubventilbetätigung in einer Brennkraftmaschine
Title (fr)
Circuit régulateur de tension pour la commande électromagnétique de soupapes de moteur à combustion interne
Publication
Application
Priority
IT TO981027 A 19981209
Abstract (en)
A voltage-regulator circuit for the electromagnetic driving of the valves of an internal combustion engine is described and comprises: an energy-storage capacitor (C) for coupling to a current-recirculation network (14) associated with at least one respective actuating coil (16) for each valve, and a switching current-regulator circuit (10) disposed between a direct-current power supply (12) and the capacitor (C). The voltage-regulator circuit is arranged to operate as a booster of the voltage from the power supply (12) towards the recirculation network (14) and as a reducer of the voltage from the recirculation network (14) towards the power supply (12). <IMAGE>
IPC 1-7
IPC 8 full level
F01L 9/20 (2021.01); F02D 41/20 (2006.01); F02D 13/02 (2006.01)
CPC (source: EP)
F01L 9/20 (2021.01); F02D 41/20 (2013.01); F02D 13/0253 (2013.01); F02D 2041/001 (2013.01)
Citation (search report)
- [A] EP 0376715 A2 19900704 - ISUZU MOTORS LTD [JP]
- [A] EP 0727566 A2 19960821 - TOYOTA MOTOR CO LTD [JP]
- [A] US 5793599 A 19980811 - SCHMITZ GUENTER [DE]
- [A] US 4801859 A 19890131 - DISHNER BRYAN W [US]
- [A] PATENT ABSTRACTS OF JAPAN vol. 1998, no. 10 31 August 1998 (1998-08-31)
Designated contracting state (EPC)
DE ES FR GB SE
DOCDB simple family (publication)
EP 1010867 A1 20000621; EP 1010867 B1 20040728; DE 69918932 D1 20040902; DE 69918932 T2 20050811; ES 2222653 T3 20050201; IT 1303595 B1 20001114; IT TO981027 A0 19981209; IT TO981027 A1 20000609
DOCDB simple family (application)
EP 99124310 A 19991206; DE 69918932 T 19991206; ES 99124310 T 19991206; IT TO981027 A 19981209