Patents by Inventor Andrea Alessandri

Andrea Alessandri 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).

  • Patent number: 7942133
    Abstract: A control method of an electronic injection fuel feeding system for an internal combustion engine and displaying at least one injector and a non-continuous flow rate fuel pump actuated by a an actuator device; the control method includes the steps of: determining the desired fuel amount which must be injected at each cycle of the internal combustion engine; driving the injector for injecting the desired fuel amount at each cycle of the internal combustion engine; determining an optimal pumping frequency of the actuator device of the fuel pump according to the desired fuel amount which must be injected at each cycle of the internal combustion engine; and actuating the actuator device of the fuel pump at the optimal pumping frequency.
    Type: Grant
    Filed: February 23, 2009
    Date of Patent: May 17, 2011
    Assignee: Magneti Marelli S.p.A.
    Inventors: Andrea Alessandri, Fabrizio Naccarato, Maurizio Fiorentini, Massimo Mattioli
  • Patent number: 7620489
    Abstract: Control method for the mixture ratio in a multi-cylinder internal combustion engine, the control method providing for the following: reading a first real value of the mixture ratio via a master lambda sensor associated with a first cylinder group, reading a second real value of the mixture ratio via a slave lambda sensor associated with a second cylinder group, calculating a first amount of fuel to inject into the cylinders of the first cylinder group to track a mixture ratio target value by using the first real value of the mixture ratio as a feedback variable, calculating the mean of the second real value of the mixture ratio in the detection window, calculating a correction value for the amount of fuel to inject based on the difference between a target value and the mean of the second real value of the mixture ratio, and calculating a second amount of fuel to inject into the cylinders of the second cylinder group by applying the correction value to the first amount of fuel to inject into the cylinders of t
    Type: Grant
    Filed: September 22, 2008
    Date of Patent: November 17, 2009
    Assignee: Magneti Marelli Powertrain S.p.A.
    Inventors: Andrea Alessandri, Fabio Sensi, Loris Lambertini, Maurizio Fiorentini
  • Publication number: 20090217910
    Abstract: A control method of an electronic injection fuel feeding system for an internal combustion engine and displaying at least one injector and a non-continuous flow rate fuel pump actuated by a an actuator device; the control method includes the steps of: determining the desired fuel amount which must be injected at each cycle of the internal combustion engine; driving the injector for injecting the desired fuel amount at each cycle of the internal combustion engine; determining an optimal pumping frequency of the actuator device of the fuel pump according to the desired fuel amount which must be injected at each cycle of the internal combustion engine; and actuating the actuator device of the fuel pump at the optimal pumping frequency.
    Type: Application
    Filed: February 23, 2009
    Publication date: September 3, 2009
    Inventors: Andrea Alessandri, Fabrizio Naccarato, Maurizio Fiorentini, Massimo Mattioli
  • Publication number: 20090143956
    Abstract: Control method for the mixture ratio in a multi-cylinder internal combustion engine, the control method providing for the following: reading a first real value of the mixture ratio via a master lambda sensor associated with a first cylinder group, reading a second real value of the mixture ratio via a slave lambda sensor associated with a second cylinder group, calculating a first amount of fuel to inject into the cylinders of the first cylinder group to track a mixture ratio target value by using the first real value of the mixture ratio as a feedback variable, calculating the mean of the second real value of the mixture ratio in the detection window, calculating a correction value for the amount of fuel to inject based on the difference between a target value and the mean of the second real value of the mixture ratio, and calculating a second amount of fuel to inject into the cylinders of the second cylinder group by applying the correction value to the first amount of fuel to inject into the cylinders of t
    Type: Application
    Filed: September 22, 2008
    Publication date: June 4, 2009
    Inventors: Andrea Alessandri, Fabio Sensi, Loris Lambertini, Maurizio Fiorentini