Patents by Inventor Andreas Bug

Andreas Bug 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).

  • Variable valve train for an engine braking mode
    Patent number: 12060815
    Abstract: The invention relates to a variable valve train for switching an outlet valve of an internal combustion engine to an engine braking mode. The variable valve train has a camshaft with a first cam, which is designed as a normal operation cam, and a second cam, which is designed as an engine braking cam. A first rocking lever has a first stroke device which is designed for selectively making or breaking a first operative connection between the first cam and the outlet valve by means of the first rocking lever. A second rocking lever has a second stroke device which is designed for selectively making or breaking a second operative connection between the second cam and the outlet valve by means of the second rocking lever. A valve device selectively connects the first stroke device or the second stroke device to a fluid feed line.
    Type: Grant
    Filed: July 17, 2020
    Date of Patent: August 13, 2024
    Assignee: MAN Truck & Bus SE
    Inventors: Thomas Malischewski, Steffen Hirschmann, Andreas Bug
  • VARIABLE VALVE TRAIN FOR AN ENGINE BRAKING MODE
    Publication number: 20220251978
    Abstract: The invention relates to a variable valve train for switching an outlet valve of an internal combustion engine to an engine braking mode. The variable valve train has a camshaft with a first cam, which is designed as a normal operation cam, and a second cam, which is designed as an engine braking cam. A first rocking lever has a first stroke device which is designed for selectively making or breaking a first operative connection between the first cam and the outlet valve by means of the first rocking lever. A second rocking lever has a second stroke device which is designed for selectively making or breaking a second operative connection between the second cam and the outlet valve by means of the second rocking lever. A valve device selectively connects the first stroke device or the second stroke device to a fluid feed line.
    Type: Application
    Filed: July 17, 2020
    Publication date: August 11, 2022
    Inventors: Thomas Malischewski, Steffen Hirschmann, Andreas Bug