A method of operating a solenoid actuator is described. The solenoid actuator comprises an armature, pole piece(s), electromagnet coil(s) arranged, in response to energisation, to cause travel of the armature between first and second positions along a dire...

An actuator assembly (105) for a fluid injection valve (100) is specified. It has a longitudinal axis (101) and comprises a stator (106) and an armature (107) which is axially displaceable with respect to the stator (106). The stator (106) comprises a plur...

A solenoid actuator is described. The solenoid actuator comprises an armature, pole piece(s), electromagnet coil(s) arranged, in response to energisation, to cause travel of the armature between first and second positions along a direction of travel, where...

The fuel injector (10) has injecting unit (15) with actuators (45-47) comprising movable nozzle needle (20) which is a partial pressure-balanced valve needle. The nozzle needle is provided with two sealing seats that are arranged along axial direction, and...

The present invention provides a fuel injector with an armature and a means for biasing the armature toward a first position. A primary coil is wound in a first direction such that, when energized, it develops a magnetic force that opposes the biasing mean...