Electroinjector for controlling fuel injection in an internal-combustion engine

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Abstract

An electroinjector is provided for controlling fuel injection in an internal-combustion engine. The electroinjector includes an electroactuator, an injection nozzle, and a pin, which is movable along an opening stroke and a closing stroke for opening/closing the nozzle under the control of the electroactuator and according to the supply pressure of the fuel into the electroinjector. A first electrical command and at least a second electrical command, which are sufficiently close to one another as to displace the pin with a profile of motion without any discontinuity in time, and such as to cause the pin to perform a first opening displacement and, respectively, a second opening displacement, are supplied to the electroactuator. Between one injection and the next, at least one among the following quantities is varied as a function of operating parameters of the engine: duration of at least one among the electrical commands; number of the electrical commands; and distance in time between the electrical commands.

Classe Tecnologica

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

Patent Office

United States Patent and Trademark Office

Numero Deposito

US7360528

Anno Deposito

2006

Anno Concessione

2008

Inventori Pugliesi

  • Ricco Mario
  • De Matthaeis Sisto Luigi
  • Stucchi Sergio
  • Gravina Antonio

Tutti gli inventori

  • Ricco Mario
  • De Matthaeis Sisto Luigi
  • Stucchi Sergio
  • Gravina Antonio

Titolari pugliesi

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  • C.R.F. Società Consortile Per Azioni