Global Patent Index - EP 1859157 A1

EP 1859157 A1 20071128 - EGR VALVE IN INTERNAL COMBUSTION ENGINES ACTUATED BY ELECTRIC MOTOR WITH RACK AND PINION

Title (en)

EGR VALVE IN INTERNAL COMBUSTION ENGINES ACTUATED BY ELECTRIC MOTOR WITH RACK AND PINION

Title (de)

EGR-VENTIL IN DURCH ELEKTRISCHEN MOTOR MIT ZAHNSTANGE UND ZAHNRAD ANGETRIEBEN VERBRENNUNGSMOTOREN

Title (fr)

SOUPAPE RGE DANS DES MOTEURS A COMBUSTION INTERNE ACTIONNEE PAR UN MOTEUR ELECTRIQUE A CREMAILLERE

Publication

EP 1859157 A1 20071128 (EN)

Application

EP 06711081 A 20060310

Priority

  • IB 2006050766 W 20060310
  • IT MI20050407 A 20050314

Abstract (en)

[origin: WO2006097884A1] EGR assembly of an internal combustion engine, which uses a poppet valve, as a fluid-intercepting member, and which comprises an electric motor (1) , the shaft of which drives the valve stem through a gear reduction mechanism comprising a rack (6) and pinion (5) coupling, as well as emergency shutting spring means (4) which push said valve into its shutting position. According to the invention, the rack is a separate member from the valve, sliding according to the valve axis and which controls it through axial pressure on the valve stem. The rack is slidable along said axis by a run which is greater than the valve run. Electronic control means feed said electric motor with at least an initial power impulse, which moves the rack in a short run away from the valve stem, followed by an initial approaching and impact run. A position sensor (15) is further provided, capable of detecting the axial position of the valve (2) with respect to the seat thereof .

IPC 8 full level

F02M 25/07 (2006.01)

CPC (source: EP)

F02M 26/54 (2016.02); F02M 26/67 (2016.02); F02M 26/48 (2016.02); F02M 26/72 (2016.02)

Citation (search report)

See references of WO 2006097884A1

Designated contracting state (EPC)

DE FR IT

DOCDB simple family (publication)

WO 2006097884 A1 20060921; DE 602006001858 D1 20080828; EP 1859157 A1 20071128; EP 1859157 B1 20080716; IT MI20050407 A1 20060915

DOCDB simple family (application)

IB 2006050766 W 20060310; DE 602006001858 T 20060310; EP 06711081 A 20060310; IT MI20050407 A 20050314