Injection valve

An injection valve (1), in particular an injector for fuel injection systems or for exhaust-gas aftertreatment systems, having a shock-wave actuating system (4), a valve closing body (8) which interacts with a valve seat face (7) to form a sealing seat (9), and a shock-wave amplifying channel (22) which serves to guide shock waves (27) which are generated by the shock-wave actuating system (4) to the sealing seat (9) and to amplify said shock waves (27), a cross-sectional area (23) of the shock-wave amplifying channel (22), which cross-sectional area (23) remains free and serves to guide the shock waves (27), decreasing at least in sections from the shock-wave actuating system (4) toward the sealing seat (9), an injector body (2) being provided which has at least one internal space (5), a shock-wave amplifying element (10) being inserted into the internal space (5), the shock-wave amplifying channel (22) being configured at least in sections between an inner wall (6) of the internal space (5) and the shock-wave amplifying element (10), and a tip (29) of the shock-wave amplifying element (10) being oriented in the shock-wave amplifying channel (22) counter to a propagation direction (28) of the shock waves (27) which are generated.