Patents by Inventor Aurelio Rivizzigno

Aurelio Rivizzigno has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method of piloting electromagnetic actuators for the control of a plurality of valves of an engine
    Patent number: 6688264
    Abstract: Method for piloting electromagnetic actuators for the control of the valves of an engine; each electromagnetic actuator is provided with at least one respective electromagnet, which is piloted by a common piloting device by means of the supply of an electric current wave which has two, initial and end control portions in which the intensity of the electric current varies rapidly and an intermediate maintenance portion in which the intensity of the electric current remains substantially constant; the method consists of supplying respective electric current waves cyclically to the electromagnets in order to control the valves according to the drive point, and to vary at a control portion of each wave the value of the intensity of the electric current supplied during the portions of maintenance of the other waves in order to limit the variation of the quantity of electric charge distributed overall by the piloting device.
    Type: Grant
    Filed: September 19, 2002
    Date of Patent: February 10, 2004
    Assignee: Magneti Marelli Powertrain S.p.A.
    Inventors: Marcello Cristiani, Gianni Padroni, Aurelio Rivizzigno
  • Method of piloting electromagnetic actuators for the control of a plurality of valves of an engine
    Publication number: 20030056742
    Abstract: Method for piloting electromagnetic actuators for the control of the valves of an engine; each electromagnetic actuator is provided with at least one respective electromagnet, which is piloted by a common piloting device by means of the supply of an electric current wave which has two, initial and end control portions in which the intensity of the electric current varies rapidly and an intermediate maintenance portion in which the intensity of the electric current remains substantially constant; the method consists of supplying respective electric current waves cyclically to the electromagnets in order to control the valves according to the drive point, and to vary at a control portion of each wave the value of the intensity of the electric current supplied during the portions of maintenance of the other waves in order to limit the variation of the quantity of electric charge distributed overall by the piloting device.
    Type: Application
    Filed: September 19, 2002
    Publication date: March 27, 2003
    Applicant: Magneti Marelli Powertrain S.p.A.
    Inventors: Marcello Cristiani, Gianni Padroni, Aurelio Rivizzigno