Patents by Inventor Klaus Uphoff

Klaus Uphoff 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).

  • Internal combustion engine having a secondary air pump
    Patent number: 8033105
    Abstract: An internal combustion engine includes an exhaust-gas system with n>1 exhaust-gas flow configurations, wherein n is an integer. The exhaust-gas flow configurations are at least partly separated from one another and each of the exhaust-gas flow configurations includes at least one catalytic converter. The internal combustion engine includes a secondary air supply system with at least one secondary air pump and at least one secondary air valve. The at least one secondary air pump is connected, via the at least one secondary air valve, to at most n?1 of the exhaust-gas flow configurations upstream of the at least one catalytic converter of the at most n?1 of the exhaust-gas flow configurations. The remaining ones of the exhaust-gas flow configurations are separated from the secondary air supply system.
    Type: Grant
    Filed: April 18, 2007
    Date of Patent: October 11, 2011
    Assignee: Volkswagen Aktiengesellschaft
    Inventors: Klaus Uphoff, Kai Bohnstedt, Mathias Dehmke
  • Internal combustion engine having a secondary air pump
    Publication number: 20070251219
    Abstract: An internal combustion engine includes an exhaust-gas system with n>1 exhaust-gas flow configurations, wherein n is an integer. The exhaust-gas flow configurations are at least partly separated from one another and each of the exhaust-gas flow configurations includes at least one catalytic converter. The internal combustion engine includes a secondary air supply system with at least one secondary air pump and at least one secondary air valve. The at least one secondary air pump is connected, via the at least one secondary air valve, to at most n?1 of the exhaust-gas flow configurations upstream of the at least one catalytic converter of the at most n?1 of the exhaust-gas flow configurations. The remaining ones of the exhaust-gas flow configurations are separated from the secondary air supply system.
    Type: Application
    Filed: April 18, 2007
    Publication date: November 1, 2007
    Applicant: Volkswagen AG
    Inventors: Klaus Uphoff, Kai Bohnstedt, Mathias Dehmke