Patent ID: 7172140

Claim:
A fuel injection valve of internal combustion engines, comprising a housing ( 12 ; 48 ) having a bore ( 34 ; 57 ) formed therein, a pistonlike valve member ( 35 ; 60 ) disposed longitudinally displaceably in the bore ( 34 ; 57 ), a pressure chamber ( 37 ; 68 ) embodied in the housing ( 12 ; 48 ) that can be filled with fuel at high pressure via an inlet conduit ( 14 , 58 ), the valve member ( 35 ; 60 ) being surrounded over at least part of its length by the pressure chamber ( 37 ; 68 ), the valve member ( 35 ; 60 ) controlling the communication of the pressure chamber ( 37 ; 68 ) with at least one injection opening ( 39 ; 66 ), and a damping chamber ( 46 ; 80 ), embodied in the housing ( 12 ; 48 ), the pressure chamber ( 37 ; 68 ) communicating with the damping chamber ( 46 ; 80 ) via a communication passage ( 42 , 76 ) and at least one throttle ( 44 ; 78 ) disposed in between the communication passage ( 42 , 76 ) and the damping chamber, wherein the throttle ( 44 ; 78 ) is embodied by a cross-sectional constriction between the communication passage and the damping chamber ( 46 ; 80 ).