Patents by Inventor Bert MOEHLMANN

Bert MOEHLMANN 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).

  • Combustion engine exhaust system with device for heat recovery, and method for operating such an exhaust system
    Patent number: 9097153
    Abstract: Exhaust systems of a combustion engine of a motor vehicle, motor vehicles with exhaust systems, and methods for operating an exhaust system of a combustion engine in a motor vehicle are provided. An exhaust system includes an exhaust line comprising a heat exchanger branch and a bypass branch. The exhaust line has an adjustable control element by which combustion gas flowing through the exhaust line is fed to the heat exchanger branch and/or the bypass branch. A heat exchanger is connected to the heat exchanger branch and to a cooling circuit and an adjusting mechanism has an actuator for adjustment of the adjusting mechanism. The adjusting member of the adjusting mechanism is configured such that the actuator is spaced from the exhaust line.
    Type: Grant
    Filed: August 21, 2012
    Date of Patent: August 4, 2015
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Bert Moehlmann, Lothar Seybold, Kai-Ove Pietsch
  • COMBUSTION ENGINE EXHAUST SYSTEM WITH DEVICE FOR HEAT RECOVERY, AND METHOD FOR OPERATING SUCH AN EXHAUST SYSTEM
    Publication number: 20130047591
    Abstract: Exhaust systems of a combustion engine of a motor vehicle, motor vehicles with exhaust systems, and methods for operating an exhaust system of a combustion engine in a motor vehicle are provided. An exhaust system includes an exhaust line comprising a heat exchanger branch and a bypass branch. The exhaust line has an adjustable control element by which combustion gas flowing through the exhaust line is fed to the heat exchanger branch and/or the bypass branch. A heat exchanger is connected to the heat exchanger branch and to a cooling circuit and an adjusting mechanism has an actuator for adjustment of the adjusting mechanism. The adjusting member of the adjusting mechanism is configured such that the actuator is spaced from the exhaust line.
    Type: Application
    Filed: August 21, 2012
    Publication date: February 28, 2013
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Bert MOEHLMANN, Lothar SEYBOLD, Kai-Ove PIETSCH
  • METHOD FOR ASCERTAINING A FLAP POSITION OF AN EXHAUST GAS HEAT EXCHANGER
    Publication number: 20120151999
    Abstract: A method is provided for ascertaining the setting of an exhaust gas flap, which is situated so it is adjustable in an exhaust system of a motor vehicle, by which a combustion gas flowing through an exhaust tract can alternately be supplied to a heat exchanger branch and/or a bypass branch, a pressure prevailing in the heat exchanger branch and/or in the bypass branch being measured to ascertain the setting of the exhaust gas flap, and a current position of the exhaust gas flap being ascertained by a comparison of the measured pressure to a reference value.
    Type: Application
    Filed: December 16, 2011
    Publication date: June 21, 2012
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Lothar SEYBOLD, Kai-Ove PIETSCH, Bert MOEHLMANN