Global Patent Index - EP 2027387 A2

EP 2027387 A2 2009-02-25 - DAMPING DEVICE FOR AN OSCILLATING COMPONENT

Title (en)

DAMPING DEVICE FOR AN OSCILLATING COMPONENT

Title (de)

DÄMPFUNGSEINRICHTUNG FÜR EINEN OSZILLIERENDEN BAUTEIL

Title (fr)

DISPOSITIF D'AMORTISSEMENT POUR UN COMPOSANT OSCILLANT

Publication

EP 2027387 A2 (DE)

Application

EP 07718499 A

Priority

  • AT 2007000288 W
  • AT 10052006 A
  • AT 10982006 A

Abstract (en)

[origin: WO2007143770A2] The invention relates to a damping device (7, 7a) for an oscillating component, in particular a valve (1), which is preferably an injection valve (2), of an internal combustion engine, said component being able to be hydraulically actuated by means of an actuation piston (3), wherein the actuation piston (3), preferably loaded with a restoring force (F), borders a pressure chamber (5) which can be charged with pressure by means of a pressure line (6) which carries a working medium, wherein the damping device (7, 7a) is arranged in the pressure line (6). In order to extend the service life while maintaining high opening and closing speeds, it is proposed that the damping device (7, 7a) has a damping piston (9, 9a) which can be longitudinally displaced in a cylinder (8, 8a) between two end positions, wherein at least one damping channel (11, 11a) is arranged in the damping piston (9, 9a), extending essentially in the longitudinal direction of the damping piston (9, 9a), which propvides a fluid connection between two opposing face sides (12, 13) of the damping piston (9, 9a) and wherein a one-way-restrictor (14, 14a) is arranged in the damping channel (11, 11a), the choke effect of which depends on the direction of flow.

IPC 8 full level (invention and additional information)

F02M 61/20 (2006.01)

CPC (invention and additional information)

F02M 61/20 (2013.01); F02M 61/161 (2013.01); F02M 2200/24 (2013.01); F02M 2200/30 (2013.01); F02M 2200/304 (2013.01)

Citation (search report)

See references of WO 2007143770A2

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

DOCDB simple family

WO 2007143770 A2 20071221; WO 2007143770 A3 20080327; AT 481567 T 20101015; DE 502007005050 D1 20101028; EP 2027387 A2 20090225; EP 2027387 B1 20100915; JP 2009540197 A 20091119; JP 5042309 B2 20121003