EP 1511928 A1 20050309 - METHOD AND DEVICE FOR MEASURING AND REGULATING THE CLOSING AND OPENING PERIOD OF A PIEZO CONTROL VALVE
Title (en)
METHOD AND DEVICE FOR MEASURING AND REGULATING THE CLOSING AND OPENING PERIOD OF A PIEZO CONTROL VALVE
Title (de)
VERFAHREN UND VORRICHTUNG ZUM MESSEN UND REGELN DER SCHLIESS- UND ÖFFNUNGSZEIT EINES PIEZO-STEUERVENTILS
Title (fr)
PROCEDE ET DISPOSITIF POUR MESURER ET REGLER LES TEMPS D'OUVERTURE ET DE FERMETURE D'UNE SOUPAPE DE DISTRIBUTION PIEZOELECTRIQUE
Publication
Application
Priority
- DE 0301858 W 20030603
- DE 10225911 A 20020611
Abstract (en)
[origin: WO03104633A1] The invention relates to a method and a device for measuring the time period required by the valve needle (50) of a control valve (21) of a piezo unit injector system to move from a first end position (64) into a second end position (65). According to the invention, the time period is determined in accordance with the voltage (u (t)) that is applied to the control valve (21) and/or the applied current (i (t)) and the actuating signal is generated at a time, which guarantees that the pressure in the control valve (21) during the measurement substantially corresponds to the pressure in the low-pressure fuel region (31).
IPC 1-7
IPC 8 full level
F02D 41/20 (2006.01); F02M 57/02 (2006.01); F02M 63/00 (2006.01)
CPC (source: EP)
F02D 41/2096 (2013.01); F02M 57/023 (2013.01); F02D 2041/2055 (2013.01); F02M 2200/21 (2013.01)
Citation (search report)
See references of WO 03104633A1
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
WO 03104633 A1 20031218; DE 10225911 B3 20040212; EP 1511928 A1 20050309
DOCDB simple family (application)
DE 0301858 W 20030603; DE 10225911 A 20020611; EP 03756964 A 20030603