Patents by Inventor Gerald J. Schimelfening

Gerald J. Schimelfening 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 and apparatus to control combustion in a spray-guided direct injection spark-ignited engine
    Patent number: 7441537
    Abstract: A method and apparatus to operate a spray-guided spark-ignition direct fuel injection internal combustion engine are provided. The invention comprises injecting a first quantity of fuel during a combustion cycle. Spark ignition is initiated, and, injection of a second quantity of fuel is controlled effective to propagate a flame kernel generated by the spark ignition, after the initiation of the spark ignition during the combustion cycle.
    Type: Grant
    Filed: October 16, 2006
    Date of Patent: October 28, 2008
    Assignee: GM Global Technology Operations, Inc.
    Inventors: Gerald A. Szekely, Jr., Mark S. Huebler, Scott E. Parrish, Gerald J. Schimelfening, Andreas M. Lippert
  • Combustion chamber for swirl flow two valve spark ignition direct injection engine
    Patent number: 6651611
    Abstract: A combustion chamber for a swirl flow two valve spark ignition direct injection engine includes a cylinder with a closed end having a wedge shaped combustion chamber recess. A fuel injector extends through the closed end near a shallow side of the wedge recess. A spark plug extends through the closed end at a deeper part of the wedge recess opposite from the injector. A single pair of laterally spaced intake and exhaust valves control intake and exhaust ports opening into the wedge recess. A piston in the cylinder has an outer diameter and includes a head end having a raised pedestal with a shallow upwardly angled face ending at a raised ridge and enclosing a shallow bowl in the head end. The bowl is generally oval with a major dimension generally aligned with a cylinder centerline through the valves.
    Type: Grant
    Filed: April 25, 2002
    Date of Patent: November 25, 2003
    Assignee: General Motors Corporation
    Inventors: Andreas M. Lippert, Alexandros C. Alkidas, Ko-Jen Wu, William Robert Matthes, Jennifer L. Liedtke, David L. Reuss, Alan William Hayman, Gerald J. Schimelfening, Gerald A. Silvas
  • COMBUSTION CHAMBER FOR SWIRL FLOW TWO VALVE SPARK IGNITION DIRECT INJECTION ENGINE
    Publication number: 20030200953
    Abstract: A combustion chamber for a swirl flow two valve spark ignition direct injection engine includes a cylinder with a closed end having a wedge shaped combustion chamber recess. A fuel injector extends through the closed end near a shallow side of the wedge recess. A spark plug extends through the closed end at a deeper part of the wedge recess opposite from the injector. A single pair of laterally spaced intake and exhaust valves control intake and exhaust ports opening into the wedge recess. A piston in the cylinder has an outer diameter and includes a head end having a raised pedestal with a shallow upwardly angled face ending at a raised ridge and enclosing a shallow bowl in the head end. The bowl is generally oval with a major dimension generally aligned with a cylinder centerline through the valves.
    Type: Application
    Filed: April 25, 2002
    Publication date: October 30, 2003
    Inventors: Andreas M. Lippert, Alexandros C. Alkidas, Ko-Jen Wu, William Robert Matthes, Jennifer L. Liedtke, David L. Reuss, Alan William Hayman, Gerald J. Schimelfening, Gerald A. Silvas