| 摘要 |
The metering servovalve ( 7 ) includes a valve body ( 8, 30 ), a shutter ( 45 ), and an electromagnet ( 15 ), and is housed inside a casing ( 2 ) of the injector ( 1 ). The electromagnet ( 15 ) activates a movable armature ( 16 ) performing a travel defined by a stop member ( 19 ) carried by the electromagnet ( 15 ), which is fixed inside the casing by a threaded ring nut ( 40 ) with the interposition of at least one deformable shim ( 48 ). The ring nut ( 40 ) is screwed to a predetermined tightening torque to a thread ( 46 ) on the casing ( 2 ) to elastically deform the shim ( 48 ). And the shim ( 48 ) is defined by a metal ring with, for example, an L-, C-, S-, Z- or Sigma-shaped cross section.
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