Patents by Inventor Friedemann Wolpers

Friedemann Wolpers 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).

  • Hybrid drive train, hybrid vehicle, and operating method
    Patent number: 9353700
    Abstract: A method for operating a hybrid drive train involves operating an internal combustion engine using a low-NOx operating method in a range of low and average rotational speeds and/or loads, and operating the internal combustion engine using a spark ignition operating method in a range of higher rotational speeds and/or loads.
    Type: Grant
    Filed: December 15, 2011
    Date of Patent: May 31, 2016
    Assignee: Daimler AG
    Inventors: Torsten Dieler, Dirk Haase, Ruediger Herweg, Gerd Kroener, Friedemann Wolpers
  • Hybrid Drive Train, Hybrid Vehicle, and Operating Method
    Publication number: 20140095050
    Abstract: A method for operating a hybrid drive train involves operating an internal combustion engine using a low-NOx operating method in a range of low and average rotational speeds and/or loads, and operating the internal combustion engine using a spark ignition operating method in a range of higher rotational speeds and/or loads.
    Type: Application
    Filed: December 15, 2011
    Publication date: April 3, 2014
    Applicant: Daimler AG
    Inventors: Torsten Dieler, Dirk Haase, Ruediger Herweg, Gerd Kroener, Friedemann Wolpers