Patents by Inventor Alfons Bleffert

Alfons Bleffert 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).

  • Exhaust-gas recirculation in an air-cooled internal combustion engine
    Patent number: 7832384
    Abstract: An internal combustion engine includes a crankcase and a cylinder head which covers a cylinder of the crankcase and in which a fresh-gas channel and an exhaust-gas channel are made which open on a cylinder-head longitudinal side and are connected to in each case a fresh-gas line and an exhaust-gas collection line, and wherein there is an exhaust-gas recirculation system, including an exhaust-gas recirculation line and a control valve. An internal combustion engine having an exhaust-gas recirculation system is provided, in which the exhaust-gas recirculation system remains uninfluenced by the exhaust-gas collection line which is hot during operation. This is achieved in that the exhaust-gas recirculation system is arranged on that cylinder-head side which lies opposite the fresh-gas line and the exhaust-gas collection line.
    Type: Grant
    Filed: December 1, 2006
    Date of Patent: November 16, 2010
    Assignee: DUETZ Aktiengesellschaft
    Inventor: Alfons Bleffert
  • Exhaust-Gas Recirculation in an Air-Cooled Internal Combustion Engine
    Publication number: 20090139501
    Abstract: An internal combustion engine includes a crankcase and a cylinder head which covers a cylinder of the crankcase and in which a fresh-gas channel and an exhaust-gas channel are made which open on a cylinder-head longitudinal side and are connected to in each case a fresh-gas line and an exhaust-gas collection line, and wherein there is an exhaust-gas recirculation system, including an exhaust-gas recirculation line and a control valve. An internal combustion engine having an exhaust-gas recirculation system is provided, in which the exhaust-gas recirculation system remains uninfluenced by the exhaust-gas collection line which is hot during operation. This is achieved in that the exhaust-gas recirculation system is arranged on that cylinder-head side which lies opposite the fresh-gas line and the exhaust-gas collection line.
    Type: Application
    Filed: December 1, 2006
    Publication date: June 4, 2009
    Applicant: DEUTZ AKTIENGESELLSCHAFT
    Inventor: Alfons Bleffert