Adjustable metering servovalve for a fuel injector, and relative adjustment method

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Abstract

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 £-shaped cross section.

Classe Tecnologica

F - Mechanical engineering, lighting, heating, weapons, blasting

Patent Office

United States Patent and Trademark Office

Numero Deposito

US8231105

Anno Deposito

2005

Anno Concessione

2006

Inventori Pugliesi

  • Ricco Mario
  • De Matthaeis Sisto Luigi
  • Gorgoglione Adriano

Tutti gli inventori

  • Ricco Mario
  • De Matthaeis Sisto Luigi
  • Gorgoglione Adriano

Titolari pugliesi

  • Non ci sono titolari pugliesi

Tutti i titolari

  • C.R.F. Società Consortile Per Azioni
  • FIAT Ricerche