EP 1418328 A3 20081224 - Device and Method of controlling the actuator of a valve
Title (en)
Device and Method of controlling the actuator of a valve
Title (de)
Vorrichtung und Verfahren zum Steuern des Aktors eines Ventils
Title (fr)
Appareil et méthode de commande d'un actionneur de soupape
Publication
Application
Priority
DE 10252092 A 20021108
Abstract (en)
[origin: EP1418328A2] The piezoelectric actuator control system for fuel injector valves for an internal combustion engine has a charging and discharging circuit (6). This circuit has separate charging (S2) and discharging (S3) switches in parallel with diodes (D2,D3) and a transformer (3). A 12v power supply is connected to a transformer (2) and the primary (W1) of the switching transformer is connected in series with the charging switch and diode with a resistor (R2). The secondary (W2) of the switching transformer is connected in series with the discharging switch and diode with a resistor (R3). The charging and discharging circuit is connected to an ASIC (Application- Specific Integrated Circuit 8). The switching circuit is connected to an actuator (CP) in series with a selection switch (1) and a resistor (R1).
IPC 8 full level
F02D 41/20 (2006.01)
CPC (source: EP)
F02D 41/2096 (2013.01); F02D 2041/2031 (2013.01); F02D 2041/2037 (2013.01); F02D 2041/2051 (2013.01)
Citation (search report)
[X] DE 19921456 A1 20001116 - BOSCH GMBH ROBERT [DE]
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
Designated extension state (EPC)
AL LT LV MK
DOCDB simple family (publication)
DOCDB simple family (application)
EP 03104122 A 20031107