Patents by Inventor Christian Rohrpasser

Christian Rohrpasser 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 for recovering heat from internal combustion engines and for converting the recovered heat into mechanical energy
    Patent number: 10323546
    Abstract: A method and a device for recovering heat from an engine and for converting the heat into mechanical energy using an expansion machine. A heat accumulator fluid is guided in a primary circuit by means of a primary pump and is firstly heated by the waste heat of the combustion engine by means of a heat exchanger, is transferred into a heat accumulator and recirculated to the first heat exchanger, and, secondly, the heat accumulator fluid is guided in a secondary circuit by said heat accumulator fluid being extracted in the vapor state from the heat accumulator and being supplied to the expansion machine, and being condensed by means of a condenser downstream thereof and being recirculated into the heat accumulator by means of a secondary pump. The primary circuit of the heat accumulator fluid is connected to the secondary circuit exclusively via the heat accumulator.
    Type: Grant
    Filed: May 18, 2015
    Date of Patent: June 18, 2019
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Hans-Peter Kollmeier, Ivica Kraljevic, Christian Rohrpasser, Helmut Striebich
  • Method for recovering heat from internal combustion engines and for converting the recovered heat into mechanical energy
    Publication number: 20170081982
    Abstract: A method and a device for recovering heat from an engine and for converting the heat into mechanical energy using an expansion machine. A heat accumulator fluid is guided in a primary circuit by means of a primary pump and is firstly heated by the waste heat of the combustion engine by means of a heat exchanger, is transferred into a heat accumulator and recirculated to the first heat exchanger, and, secondly, the heat accumulator fluid is guided in a secondary circuit by said heat accumulator fluid being extracted in the vapor state from the heat accumulator and being supplied to the expansion machine, and being condensed by means of a condenser downstream thereof and being recirculated into the heat accumulator by means of a secondary pump. The primary circuit of the heat accumulator fluid is connected to the secondary circuit exclusively via the heat accumulator.
    Type: Application
    Filed: May 18, 2015
    Publication date: March 23, 2017
    Inventors: Hans-Peter Kollmeier, Ivica Kraljevic, Christian Rohrpasser, Helmut Striebich