EP 1532350 A1 20050525 - SENSOR ASSEMBLY FOR DETECTING THE MOVEMENT OF A CONTROLLING ELEMENT, WHICH HAS A SHORT OVERALL LENGTH AND WHICH IS DISPLACED BACK AND FORTH BY AN ACTUATOR
Title (en)
SENSOR ASSEMBLY FOR DETECTING THE MOVEMENT OF A CONTROLLING ELEMENT, WHICH HAS A SHORT OVERALL LENGTH AND WHICH IS DISPLACED BACK AND FORTH BY AN ACTUATOR
Title (de)
SENSORANORDNUNG ZUR ERFASSUNG DER BEWEGUNG EINES DURCH EINEN AKTUATOR HIN UND HER BEWEGTEN STELLGLIEDES MIT KURZER BAULÄNGE
Title (fr)
SYSTEME DE CAPTEURS DESTINE A DETECTER LE MOUVEMENT DE VA-ET-VIENT D'UN ELEMENT DE REGLAGE DE COURTE LONGUEUR AU TRAVERS D'UN ACTIONNEUR
Publication
Application
Priority
EP 0209699 W 20020830
Abstract (en)
[origin: WO2004020797A1] The invention relates to a sensor assembly for detecting a controlling element that can be displaced by an actuator, particularly an electromagnetic actuator for actuating a gas exchange valve on a piston internal combustion engine. The sensor assembly comprises a coil assembly (18) having at least one coil (18.1; 26) which, on its outer periphery, is enclosed by a housing (24) made of a magnetically conductive material that, however, poorly conducts electricity, and which is connected to a power supply and signal recorder (19). The sensor assembly also comprises an axially displaceable rod-shaped sensor part (17) made of a preferably magnetizable material, which is connected to the controlling element that can be axially displaced back and forth, and which is provided with a short-circuit element (23). This short-circuit element is delimited in the longitudinal direction by two end edges (23.1, 23.2), is made of an electrically conductive material having a low ohmic resistance, and the extension thereof in the direction of movement is dimensioned in such a manner that only one end edge (23.1) of the short-circuit element (23) is always located inside the coil assembly (18) during the back-and-forth movement in the stroke area (h).
IPC 1-7
IPC 8 full level
F01L 9/20 (2021.01)
CPC (source: EP US)
F01L 9/20 (2021.01 - EP US); F01L 2009/2109 (2021.01 - EP); F01L 2009/2169 (2021.01 - EP US); F01L 2820/045 (2013.01 - EP US)
Citation (search report)
See references of WO 2004020797A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR
DOCDB simple family (publication)
WO 2004020797 A1 20040311; AU 2002333765 A1 20040319; EP 1532350 A1 20050525; US 2005168215 A1 20050804; US 7053604 B2 20060530
DOCDB simple family (application)
EP 0209699 W 20020830; AU 2002333765 A 20020830; EP 02807706 A 20020830; US 6757805 A 20050228