Patents by Inventor Peter Gerl

Peter Gerl 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).

  • Process and system for controlling the mixture composition for a spark ignition Otto engine with an NOx storage catalyst during a regeneration phase
    Patent number: 6871492
    Abstract: A process and a system are used for controlling the mixture composition for an Otto engine with an NOx storage catalyst during a regeneration phase. The process includes controlling, to the value of one, a ?-value (?M) of an exhaust gas fed to the NOx storage catalyst during a regeneration phase as a function of a ?-value (?K) of an exhaust gas emitted by the NOx storage catalyst. The system includes a control device for controlling, to the value of one, a ?-value (?M) of the exhaust gas fed to the NOx storage catalyst during the regeneration phase as a function of the ?-value (?K) of the exhaust gas emitted by the NOx storage catalyst.
    Type: Grant
    Filed: August 15, 2002
    Date of Patent: March 29, 2005
    Assignees: Dr. Ing. h.c.F. Porsche AG, Audi AG, Bayerische Motoren Werke AG, DaimlerChrysler AG, Volkswagon AG
    Inventors: Ngoc-Hoa Huynh, Lorenz Salzer, Ulf-Peter Schmeling, Peter Gerl
  • Arrangement and method for igniting a combustible gas mixture for the exhaust system of an internal-combustion engine and corresponding exhaust system
    Patent number: 6684632
    Abstract: An arrangement for igniting a combustible gas mixture for the exhaust system of an internal-combustion engine has a frame device which is wound with a heating wire and can be installed into an exhaust gas train of the exhaust system transversely to the flow axis of the exhaust gas. A power supply device is provided for supplying the heating wire with electric current for generating a predetermined heating wire temperature. The frame device defines a flow range in which a heating wire grid is provided.
    Type: Grant
    Filed: August 9, 2001
    Date of Patent: February 3, 2004
    Assignees: Dr. Ing. h.c.F. Porsche AG, Audi AG, Bayerische Motoren Werke AG, DaimlerChrysler AG, Volkswagen AG
    Inventors: Ngoc-Hoa Huynh, Lorenz Salzer, Peter Gerl
  • Process and apparatus for reducing warm-up emissions of a direct injection internal combustion engine
    Patent number: 6568174
    Abstract: A method and an arrangement are provided for reducing warm-up emissions in the exhaust system of a direct-injection internal-combustion engine. The method includes the steps of adjusting a lean air/fuel mixture for the engine-related combustion; implementing a late injection into the exhaust gas during the exhaust cycle of the internal-combustion engine, so that the exhaust gas contains an essentially stoichiometric air/fuel mixture; and igniting the stoichiometric air/fuel mixture contained in the exhaust gas in the proximity of a catalyst device for heating up the catalyst device.
    Type: Grant
    Filed: August 9, 2001
    Date of Patent: May 27, 2003
    Assignees: Dr. Ing H.C.F. Porsche Aktiengesellschaft, Audi AG, Volkswagen AG, DaimlerChrysler AG, Bayerische Motoren Werke AG
    Inventors: Ngoc-Hoa Huynh, Lorenz Salzer, Peter Gerl, Alf Degen
  • Process and system for controlling the mixture composition for a spark ignition otto engine with an NOx storage catalyst during a regeneration phase
    Publication number: 20030056500
    Abstract: A process and a system are used for controlling the mixture composition for an Otto engine with an NOx storage catalyst during a regeneration phase. The process includes controlling, to the value of one, a &lgr;-value (&lgr;M) of an exhaust gas fed to the NOx storage catalyst during a regeneration phase as a function of a &lgr;-value (&lgr;K) of an exhaust gas emitted by the NOx storage catalyst. The system includes a control device for controlling, to the value of one, a &lgr;-value (&lgr;M) of the exhaust gas fed to the NOx storage catalyst during the regeneration phase as a function of the &lgr;-value (&lgr;K) of the exhaust gas emitted by the NOx storage catalyst.
    Type: Application
    Filed: August 15, 2002
    Publication date: March 27, 2003
    Applicant: Dr. Ing. h.c.F. Porsche AG; Audi AG; Bayerische Motoren Werke AG; DaimlerChrysler AG; and Volkswag
    Inventors: Ngoc-Hoa Huynh, Lorenz Salzer, Ulf-Peter Schmeling, Peter Gerl
  • Process and apparatus for reducing warm-up emissions of a direct injection internal combustion engine
    Publication number: 20020035831
    Abstract: A method and an arrangement are provided for reducing warm-up emissions in the exhaust system of a direct-injection internal-combustion engine. The method includes the steps of adjusting a lean air/fuel mixture for the engine-related combustion; implementing a late injection into the exhaust gas during the exhaust cycle of the internal-combustion engine, so that the exhaust gas contains an essentially stoichiometric air/fuel mixture; and igniting the stoichiometric air/fuel mixture contained in the exhaust gas in the proximity of a catalyst device for heating up the catalyst device.
    Type: Application
    Filed: August 9, 2001
    Publication date: March 28, 2002
    Inventors: Ngoc-Hoa Huynh, Lorenz Salzer, Peter Gerl, Alf Degen
  • Arrangement and method for igniting a combustible gas mixture for the exhaust system of an internal-combustion engine and corresponding exhaust system
    Publication number: 20020023434
    Abstract: An arrangement for igniting a combustible gas mixture for the exhaust system of an internal-combustion engine has a frame device which is wound with a heating wire and can be installed into an exhaust gas train of the exhaust system transversely to the flow axis of the exhaust gas. A power supply device is provided for supplying the heating wire with electric current for generating a predetermined heating wire temperature. The frame device defines a flow range in which a heating wire grid is provided.
    Type: Application
    Filed: August 9, 2001
    Publication date: February 28, 2002
    Inventors: Ngoc-Hoa Huynh, Lorenz Salzer, Peter Gerl