Patents by Inventor VICTOR A. FIORINI

VICTOR A. FIORINI 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).

  • Variable valve lift diagnostic systems and methods using cam phaser differential oil pressure
    Patent number: 9810161
    Abstract: A diagnostic system for a vehicle includes a difference module, a Fourier module, and a fault module. The difference module determines pressure differences for a camshaft revolution based on differences between: first pressures within first chambers of a camshaft phaser measured during the camshaft revolution, wherein the first pressures within the first chamber control advancement of the camshaft relative to a crankshaft of an engine; and second pressures within second chambers of the camshaft phaser measured during the camshaft revolution, wherein the second pressures within the second chamber control retardation of the camshaft relative to the crankshaft of the engine. The Fourier module performs a Fourier Transform (FT) based on the pressure differences to produce FT data. The fault module, based on the FT data, selectively indicates that a fault is present in a variable valve lift mechanism that is actuated by the camshaft.
    Type: Grant
    Filed: December 9, 2014
    Date of Patent: November 7, 2017
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Victor A. Fiorini, Turgay Bengisu, Pradheep C. Velusamy
  • VARIABLE VALVE LIFT DIAGNOSTIC SYSTEMS AND METHODS USING CAM PHASER DIFFERENTIAL OIL PRESSURE
    Publication number: 20160090932
    Abstract: A diagnostic system for a vehicle includes a difference module, a Fourier module, and a fault module. The difference module determines pressure differences for a camshaft revolution based on differences between: first pressures within first chambers of a camshaft phaser measured during the camshaft revolution, wherein the first pressures within the first chamber control advancement of the camshaft relative to a crankshaft of an engine; and second pressures within second chambers of the camshaft phaser measured during the camshaft revolution, wherein the second pressures within the second chamber control retardation of the camshaft relative to the crankshaft of the engine. The Fourier module performs a Fourier Transform (FT) based on the pressure differences to produce FT data. The fault module, based on the FT data, selectively indicates that a fault is present in a variable valve lift mechanism that is actuated by the camshaft.
    Type: Application
    Filed: December 9, 2014
    Publication date: March 31, 2016
    Inventors: VICTOR A. FIORINI, TURGAY BENGISU, PRADHEEP C. VELUSAMY