Patents by Inventor Christian EICHMUELLER

Christian EICHMUELLER 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).

  • Patent number: 10746065
    Abstract: An exhaust-gas system for a vehicle having an internal combustion engine includes a Helmholtz resonator and two exhaust-gas lines extending toward the resonator. The resonator has two neck openings to a resonator volume. Each neck opening is coupled to one of the exhaust-gas lines, and the resonator is tuned to damp a dominant engine order.
    Type: Grant
    Filed: September 26, 2017
    Date of Patent: August 18, 2020
    Assignee: Bayerische Motoren Werke Aktiegesellschaft
    Inventors: Christian Eichmueller, Rainer Drees
  • Patent number: 9945276
    Abstract: An exhaust system is provided for an internal combustion engine having at least a first and a second cylinder, wherein the first cylinder is assigned a first exhaust gas pipe and the second cylinder is assigned a second exhaust gas pipe. The first exhaust gas pipe is assigned a first muffler, and the second exhaust gas pipe is assigned a second muffler. A first damping pipe branches off from the first exhaust gas pipe upstream of a first shut-off element. The damping pipe firstly opens into a first reflection chamber and is subsequently led through the first muffler and opens into the second exhaust gas manifold downstream of a second shut-off element. A second damping pipe branches off from the second exhaust gas pipe upstream of a second shut-off element. The second damping pipe firstly opens into a second reflection chamber and is subsequently led through the second muffler and opens into the first exhaust gas pipe downstream of the first shut-off element.
    Type: Grant
    Filed: March 27, 2017
    Date of Patent: April 17, 2018
    Assignee: Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Rainer Drees, Christian Eichmueller
  • Patent number: 9945280
    Abstract: An exhaust gas system is provided for an internal combustion engine having at least a first and a second cylinder. A first exhaust gas pipe is associated with the first cylinder and a second exhaust gas pipe is associated with the second cylinder. A first muffler is associated with the first exhaust gas pipe and a second muffler is associated with the second exhaust gas pipe. A first muffling pipe branches off from the first exhaust gas pipe upstream of a first shut-off element, and is fed through the first muffler and leads into the second exhaust gas pipe downstream of a second shut-off element. A second muffling pipe branches off from the second exhaust gas pipe upstream of the second shut-off element, and is fed through the second muffler and leads into the first exhaust gas pipe downstream of the first shut-off element.
    Type: Grant
    Filed: October 5, 2015
    Date of Patent: April 17, 2018
    Assignee: Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Christian Eichmueller, Rainer Drees
  • Publication number: 20180016954
    Abstract: An exhaust-gas system for a vehicle having an internal combustion engine includes a Helmholtz resonator and two exhaust-gas lines extending toward the resonator. The resonator has two neck openings to a resonator volume. Each neck opening is coupled to one of the exhaust-gas lines, and the resonator is tuned to damp a dominant engine order.
    Type: Application
    Filed: September 26, 2017
    Publication date: January 18, 2018
    Inventors: Christian EICHMUELLER, Rainer DREES
  • Publication number: 20170198617
    Abstract: An exhaust system is provided for an internal combustion engine having at least a first and a second cylinder, wherein the first cylinder is assigned a first exhaust gas pipe and the second cylinder is assigned a second exhaust gas pipe. The first exhaust gas pipe is assigned a first muffler, and the second exhaust gas pipe is assigned a second muffler. A first damping pipe branches off from the first exhaust gas pipe upstream of a first shut-off element. The damping pipe firstly opens into a first reflection chamber and is subsequently led through the first muffler and opens into the second exhaust gas manifold downstream of a second shut-off element. A second damping pipe branches off from the second exhaust gas pipe upstream of a second shut-off element. The second damping pipe firstly opens into a second reflection chamber and is subsequently led through the second muffler and opens into the first exhaust gas pipe downstream of the first shut-off element.
    Type: Application
    Filed: March 27, 2017
    Publication date: July 13, 2017
    Inventors: Rainer DREES, Christian EICHMUELLER
  • Patent number: 9605580
    Abstract: An exhaust system is provided for an internal combustion engine having at least a first and a second cylinder, wherein the first cylinder is assigned a first exhaust gas pipe and the second cylinder is assigned a second exhaust gas pipe. The first exhaust gas pipe is assigned a first muffler, and the second exhaust gas pipe is assigned a second muffler. A first damping pipe branches off from the first exhaust gas pipe upstream of a first shut-off element. The damping pipe firstly opens into a first reflection chamber and is subsequently led through the first muffler and opens into the second exhaust gas manifold downstream of a second shut-off element. A second damping pipe branches off from the second exhaust gas pipe upstream of a second shut-off element. The second damping pipe firstly opens into a second reflection chamber and is subsequently led through the second muffler and opens into the first exhaust gas pipe downstream of the first shut-off element.
    Type: Grant
    Filed: October 5, 2015
    Date of Patent: March 28, 2017
    Assignee: Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Rainer Drees, Christian Eichmueller
  • Publication number: 20160053658
    Abstract: An exhaust system is provided for an internal combustion engine having at least a first and a second cylinder, wherein the first cylinder is assigned a first exhaust gas pipe and the second cylinder is assigned a second exhaust gas pipe. The first exhaust gas pipe is assigned a first muffler, and the second exhaust gas pipe is assigned a second muffler. A first damping pipe branches off from the first exhaust gas pipe upstream of a first shut-off element. The damping pipe firstly opens into a first reflection chamber and is subsequently led through the first muffler and opens into the second exhaust gas manifold downstream of a second shut-off element. A second damping pipe branches off from the second exhaust gas pipe upstream of a second shut-off element. The second damping pipe firstly opens into a second reflection chamber and is subsequently led through the second muffler and opens into the first exhaust gas pipe downstream of the first shut-off element.
    Type: Application
    Filed: October 5, 2015
    Publication date: February 25, 2016
    Inventors: Rainer DREES, Christian EICHMUELLER
  • Publication number: 20160024989
    Abstract: An exhaust gas system is provided for an internal combustion engine having at least a first and a second cylinder. A first exhaust gas pipe is associated with the first cylinder and a second exhaust gas pipe is associated with the second cylinder. A first muffler is associated with the first exhaust gas pipe and a second muffler is associated with the second exhaust gas pipe. A first muffling pipe branches off from the first exhaust gas pipe upstream of a first shut-off element, and is fed through the first muffler and leads into the second exhaust gas pipe downstream of a second shut-off element. A second muffling pipe branches off from the second exhaust gas pipe upstream of the second shut-off element, and is fed through the second muffler and leads into the first exhaust gas pipe downstream of the first shut-off element.
    Type: Application
    Filed: October 5, 2015
    Publication date: January 28, 2016
    Inventors: Christian EICHMUELLER, Rainer DREES