EP 0889223 A3 20010328 - Process and device for detecting the switching time of an electrovalve
Title (en)
Process and device for detecting the switching time of an electrovalve
Title (de)
Verfahren und Vorrichtung zur Erfassung eines Schaltzeitpunktes eines Magnetventils
Title (fr)
Procédé et dispositif pour détecter l'instant de commutation d'une électrovalve
Publication
Application
Priority
DE 19728840 A 19970705
Abstract (en)
[origin: EP0889223A2] The method involves controlling the current flowing through the solenoid valve coil. In a first phase, the trip current is controlled at a defined value. During a second phase, a retaining current is controlled at a defined value. During a detection phase, when it is likely that the switching point will occur, the current is controlled at a detection value, which is smaller than the trip current and larger than the retaining current. The detection value is selected such that no saturation occurs. When the solenoid valve is used in a fuel injection system, the injection is divided into a pre-injection and a main injection. During the pre-injection, the current is controlled during the detection phase at the detection value.
IPC 1-7
IPC 8 full level
F02M 51/00 (2006.01); F02D 41/20 (2006.01); F02D 41/28 (2006.01); F02D 41/34 (2006.01); F02M 45/04 (2006.01); F02M 51/06 (2006.01); F16K 31/06 (2006.01); H01H 47/32 (2006.01)
CPC (source: EP)
F02D 41/20 (2013.01); F02D 2041/2003 (2013.01); F02D 2041/2017 (2013.01); F02D 2041/2034 (2013.01); F02D 2041/2044 (2013.01)
Citation (search report)
- [DPX] DE 19607073 A1 19970828 - BOSCH GMBH ROBERT [DE]
- [X] US 5245501 A 19930914 - LOCHER JOHANNES [DE], et al
- [X] GB 2293244 A 19960320 - MTU FRIEDRICHSHAFEN GMBH [DE]
- [DA] DE 4411789 A1 19951012 - BOSCH GMBH ROBERT [DE]
- [DA] DE 4425987 A1 19960125 - BOSCH GMBH ROBERT [DE]
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 0889223 A2 19990107; EP 0889223 A3 20010328; EP 0889223 B1 20030521; DE 19728840 A1 19990107; DE 59808413 D1 20030626; JP H11229937 A 19990824
DOCDB simple family (application)
EP 98111675 A 19980625; DE 19728840 A 19970705; DE 59808413 T 19980625; JP 18886698 A 19980703