Patents by Inventor Tariq O. Hashim

Tariq O. Hashim 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).

  • Wideband diesel fuel rail control using active pressure control valve
    Patent number: 9587581
    Abstract: A method and system for actively controlling the fuel pressure in the fuel rails of a fuel injection system is disclosed for providing wideband fuel rail control. An active pressure control circuit controls the pressure control valve over the entire range of engine operating conditions and in the frequency domain. Implementation of a closed-loop feedback control is effective for attenuating fuel pressure fluctuations in the fuel rail assembly.
    Type: Grant
    Filed: June 20, 2013
    Date of Patent: March 7, 2017
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventor: Tariq O. Hashim
  • Wideband Diesel Fuel Rail Control Using Active Pressure Control Valve
    Publication number: 20140373812
    Abstract: A method and system for actively controlling the fuel pressure in the fuel rails of a fuel injection system is disclosed for providing wideband fuel rail control. An active pressure control circuit controls the pressure control valve over the entire range of engine operating conditions and in the frequency domain. Implementation of a closed-loop feedback control is effective for attenuating fuel pressure fluctuations in the fuel rail assembly.
    Type: Application
    Filed: June 20, 2013
    Publication date: December 25, 2014
    Inventor: Tariq O. HASHIM
  • Control of a pre-spun starter
    Patent number: 8251034
    Abstract: A method is provided for controlling a starting system for an engine of a motor vehicle. The motor vehicle includes a pre-spun starter for selective meshing with and starting of the engine, and a controller for controlling the starting of the engine. The method includes sensing of a rotational speed of the pre-spun starter, and sensing of a rotational speed of the engine. The method additionally includes regulating the rotational speed of the pre-spun starter to substantially synchronize the rotational speed of the pre-spun starter with the rotational speed of the engine. Furthermore, the method includes engaging the pre-spun starter gear with the engine, and applying torque by the pre-spun starter to the engine, such that the engine is started.
    Type: Grant
    Filed: December 15, 2009
    Date of Patent: August 28, 2012
    Assignee: GM Global Technology Operations LLC
    Inventor: Tariq O. Hashim
  • CONTROL OF A PRE-SPUN STARTER
    Publication number: 20110139108
    Abstract: A method is provided for controlling a starting system for an engine of a motor vehicle. The motor vehicle includes a pre-spun starter for selective meshing with and starting of the engine, and a controller for controlling the starting of the engine. The method includes sensing of a rotational speed of the pre-spun starter, and sensing of a rotational speed of the engine. The method additionally includes regulating the rotational speed of the pre-spun starter to substantially synchronize the rotational speed of the pre-spun starter with the rotational speed of the engine. Furthermore, the method includes engaging the pre-spun starter gear with the engine, and applying torque by the pre-spun starter to the engine, such that the engine is started.
    Type: Application
    Filed: December 15, 2009
    Publication date: June 16, 2011
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventor: Tariq O. Hashim