Patents by Inventor Syed Shah Jalal

Syed Shah Jalal 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).

  • SYSTEMS AND METHODS FOR REDUCING RAIL PRESSURE IN A COMMON RAIL FUEL SYSTEM
    Publication number: 20210340931
    Abstract: Methods and systems, using a controller (20), for performing fuel pressure control operation of an engine (12) having at least one cylinder (16) is disclosed. The controller (20) includes a fuel system control unit (42) configured to control a fuel pressure applied to at least one injector (18) of the engine (12) during a motoring condition period (412) based on a commanded pulse train duration (410). During the motoring condition period (412), no combustion occurs in the at least one cylinder (16) of the engine (12). The commanded pulse train duration is a time period during which the at least one injector (18) of the engine (12) is activated for a drain operation. The fuel system control unit (42) is configured to command the at least one injector (18), for the commanded pulse train duration during the motoring condition period (412), to release fuel from the at least one injector (18) without injecting the fuel into the at least one cylinder (16) of the engine (12).
    Type: Application
    Filed: May 24, 2021
    Publication date: November 4, 2021
    Inventors: David M. Carey, Syed Shah Jalal, Richard J. Dudek, Ulf Carlsson, Paul Peavler
  • Systems and methods for reducing rail pressure in a common rail fuel system
    Patent number: 11015548
    Abstract: Methods and systems, using a controller (20), for performing fuel pressure control operation of an engine (12) having at least one cylinder (16) is disclosed. The controller (20) includes a fuel system control unit (42) configured to control a fuel pressure applied to at least one injector (18) of the engine (12) during a motoring condition period (412) based on a commanded pulse train duration (410). During the motoring condition period (412), no combustion occurs in the at least one cylinder (16) of the engine (12). The commanded pulse train duration is a time period during which the at least one injector (18) of the engine (12) is activated for a drain operation. The fuel system control unit (42) is configured to command the at least one injector (18), for the commanded pulse train duration during the motoring condition period (412), to release fuel from the at least one injector (18) without injecting the fuel into the at least one cylinder (16) of the engine (12).
    Type: Grant
    Filed: December 14, 2017
    Date of Patent: May 25, 2021
    Assignee: Cummins Inc.
    Inventors: David M. Carey, Syed Shah Jalal, Richard J. Dudek, Ulf Carlsson, Paul Peavler