Patents by Inventor Mario Reale

Mario Reale 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 diagnosing leakage in an internal combustion engine common-rail injection system
    Patent number: 6564616
    Abstract: There is described a method of diagnosing leakage in a common-rail injection system of an internal combustion engine having a number of cylinders; the injection system having a number of injectors, each supplying high-pressure fuel to a respective cylinder of the engine, and a fuel supply circuit supplying fuel to the injectors. The diagnosis method includes the steps of determining the contribution of each cylinder to the angular acceleration of the engine; determining, for each cylinder, an unbalance index indicating the unbalance of the angular acceleration contribution of the cylinder with respect to the angular acceleration contributions of the other cylinders; reducing, upon detection of a fault in the injection system, the amount of fuel injected into each cylinder; and distinguishing, for each injector, between a jammed-open injector condition and a fault condition in the fuel supply circuit, on the basis of the variation in the unbalance index of the respective cylinder following the fuel reduction.
    Type: Grant
    Filed: November 14, 2001
    Date of Patent: May 20, 2003
    Assignee: C R F Societa Consortile per Azioni
    Inventors: Pierpaolo Antonioli, Cristiana Davide, Mario Reale
  • Method of diagnosing leakage in an internal combustion engine common-rail injection system
    Publication number: 20020112528
    Abstract: There is described a method of diagnosing leakage in a common-rail injection system of an internal combustion engine having a number of cylinders; the injection system having a number of injectors, each supplying high-pressure fuel to a respective cylinder of the engine, and a fuel supply circuit supplying fuel to the injectors. The diagnosis method includes the steps of determining the contribution of each cylinder to the angular acceleration of the engine; determining, for each cylinder, an unbalance index indicating the unbalance of the angular acceleration contribution of the cylinder with respect to the angular acceleration contributions of the other cylinders; reducing, upon detection of a fault in the injection system, the amount of fuel injected into each cylinder; and distinguishing, for each injector, between a jammed-open injector condition and a fault condition in the fuel supply circuit, on the basis of the variation in the unbalance index of the respective cylinder following the fuel reduction.
    Type: Application
    Filed: November 14, 2001
    Publication date: August 22, 2002
    Inventors: Pierpaolo Antonioli, Cristiana Davide, Mario Reale