Patents by Inventor Michel Weibl

Michel Weibl 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).

  • Multi-cylinder air-compressing injection-type internal-combustion engine
    Patent number: 6141959
    Abstract: A multi-cylinder air-compressing injection-type internal-combustion engine having a nitric oxide adsorber catalyst and an exhaust gas return device. In order to increase the hydrocarbon fraction in the exhaust gas in front of an exhaust gas aftertreatment device during a regeneration phase and to reduce the oxygen content, exhaust gas pipes of the cylinders are divided into at least two flows, which extend separately from one another at least along a distance. An increased hydrocarbon emission is generated exclusively in the cylinders of one of the flows at times. Another of the flows is connected by way of the exhaust gas return device with an air intake pipe of the internal-combustion engine.
    Type: Grant
    Filed: July 16, 1998
    Date of Patent: November 7, 2000
    Assignee: DaimlerChrysler AG
    Inventors: Steffen Digeser, Frank Duvinage, Walter Friess, Alexander Funk, Anton Kerckhoff, Bernd Krutzsch, Detlef Scharr, Michel Weibl, Guenter Wenninger