EP 1812690 A1 20070801 - METHOD FOR CALIBRATION OF A POSITIONAL SENSOR ON A ROTATIONAL ACTUATOR DEVICE FOR CONTROL OF A GAS EXCHANGE VALVE IN AN INTERNAL COMBUSTION ENGINE
Title (en)
METHOD FOR CALIBRATION OF A POSITIONAL SENSOR ON A ROTATIONAL ACTUATOR DEVICE FOR CONTROL OF A GAS EXCHANGE VALVE IN AN INTERNAL COMBUSTION ENGINE
Title (de)
VERFAHREN ZUR KALIBRIERUNG EINES WEGSENSORS EINER DREHAKTUATORVORRICHTUNG ZUR ANSTEUERUNG EINES GASWECHSELVENTILS EINER BRENNKRAFTMASCHINE
Title (fr)
PROCÉDÉ POUR ÉTALONNER UN CAPTEUR DE TRAJECTOIRE D'UN DISPOSITIF D'ACTIONNEMENT ROTATIF SERVANT À COMMANDER UNE SOUPAPE DE CHANGEMENT DES GAZ D'UN MOTEUR À COMBUSTION INTERNE
Publication
Application
Priority
- EP 2005011247 W 20051019
- DE 102004054776 A 20041112
Abstract (en)
[origin: WO2006050796A1] The invention relates to a method for calibration of a positional sensor on a rotational actuator device for control of a gas exchange valve in an internal combustion engine. The rotational actuator device thus comprises a controlled electric motor, with an operating element for operating the gas exchange valve, two energy storage means, acting in opposing drive directions on the gas exchange valve and a controller, for controlling the electric motor. The controller controls the electric motor such that the gas exchange valve may be displaced from a first end position, in which the operating element driven by the electric motor by means of the rotor and hence the rotor, is in a metastable instantaneously-neutral position, corresponding to the first end position, into a second end position in which the operating element (6, 6a, 6b) and the rotor are in a metastable instantaneously-neutral position, corresponding to the second end position and vice versa. According to the invention, the electric motor is controlled from an instantaneously-neutral position, such that the rotor is displaced in at least one direction about a path run from the instantaneously-neutral position, the current draw for the electric motor arising therefrom is recorded and, depending on the obtained current values for the current draw of the electric motor, a new rotor position for calibration of the positional sensor is determined.
IPC 8 full level
F01L 1/34 (2006.01); F01L 1/04 (2006.01); F01L 1/08 (2006.01)
CPC (source: EP US)
F01L 1/04 (2013.01 - EP US); F01L 1/08 (2013.01 - EP US); F01L 1/34 (2013.01 - EP US); F01L 2820/032 (2013.01 - EP US)
Citation (search report)
See references of WO 2006050796A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
DE 102004054776 B3 20060316; EP 1812690 A1 20070801; US 2007208488 A1 20070906; US 7516642 B2 20090414; WO 2006050796 A1 20060518
DOCDB simple family (application)
DE 102004054776 A 20041112; EP 05857847 A 20051019; EP 2005011247 W 20051019; US 79830607 A 20070511