EP 2027387 A2 20090225 - 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
Application
Priority
- AT 2007000288 W 20070613
- AT 10052006 A 20060613
- AT 10982006 A 20060629
Abstract (en)
[origin: WO2007143770A3] 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
F02M 61/20 (2006.01)
CPC (source: EP)
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)
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 (publication)
WO 2007143770 A2 20071221; WO 2007143770 A3 20080327; AT E481567 T1 20101015; DE 502007005050 D1 20101028; EP 2027387 A2 20090225; EP 2027387 B1 20100915; JP 2009540197 A 20091119; JP 5042309 B2 20121003
DOCDB simple family (application)
AT 2007000288 W 20070613; AT 07718499 T 20070613; DE 502007005050 T 20070613; EP 07718499 A 20070613; JP 2009514592 A 20070613