Global Patent Index - EP 2024627 A1

EP 2024627 A1 2009-02-18 - DEVICE FOR CONTROLLING AN ULTRASOUND PIEZOELECTRIC INJECTOR

Title (en)

DEVICE FOR CONTROLLING AN ULTRASOUND PIEZOELECTRIC INJECTOR

Title (de)

VORRICHTUNG ZUR STEUERUNG EINES PIEZOELEKTRISCHEN ULTRASCHALLINJEKTORS

Title (fr)

DISPOSITIF DE COMMANDE D'UN INJECTEUR PIEZO-ELECTRIQUE ULTRASONORE

Publication

EP 2024627 A1 (FR)

Application

EP 07766086 A

Priority

  • FR 2007051313 W
  • FR 0604727 A

Abstract (en)

[origin: WO2007135339A1] The invention relates to a device for the electronic control of at least one ultrasound piezoelectric injector driven by a control computer and powered with a DC voltage source, comprising: a first stage of amplifying said DC voltage delivering a high DC voltage signal; a second stage of generating an injector charge current, made up of an inductor connected to a chopping switch and forming an oscillating circuit with each driven injector; a third stage of selecting which injectors to drive, comprising a selection switch in series with each injector; characterized in that the selection third stage comprises, for each injector, a cell for damping the residual energy stored in each said injector at the end of injection command and causing alternating raised voltages at the terminals of said injector, the damping cell containing a resistor. Application to motor vehicles.

IPC 8 full level (invention and additional information)

F02D 41/20 (2006.01); F02M 69/04 (2006.01); H02H 9/00 (2006.01)

CPC (invention and additional information)

F02D 41/2096 (2013.01); H02N 2/067 (2013.01); F02M 69/041 (2013.01)

Citation (search report)

See references of WO 2007135339A1

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 MT NL PL PT RO SE SI SK TR

Designated extension state (EPC)

AL BA HR MK RS

EPO simple patent family

WO 2007135339 A1 20071129; EP 2024627 A1 20090218; FR 2901575 A1 20071130; FR 2901575 B1 20120817

INPADOC legal status


2018-01-03 [18D] APPLICATION DEEMED TO BE WITHDRAWN

- Effective date: 20170721

2017-04-12 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20170310

2012-08-08 [DAX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT (TO ANY COUNTRY) (DELETED)

2009-02-18 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20080908

2009-02-18 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

2009-02-18 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO:

- Countries: AL BA HR MK RS