Fuel injection valve, for use in internal-combustion engine, has valve needle forming sealing seat with valve closing body and valve seat surface, such that mechanical transmission element is arranged between needle and actuator

摘要

The valve (1) has a piezoelectric or magnetostrictive actuator (2), with a valve needle that is effectively connected with the actuator. The needle forms a sealing seat with a valve closing body and a valve seat surface, such that a mechanical transmission element (26) is arranged between the needle and the actuator. The element has balls (27), a counter bearing and a spring. The balls are arranged between the bearing and an actuator head (22) in a radially relocatable manner. The element is formed as a ring with a slot.