Patents by Inventor Ruediger Preiss

Ruediger Preiss 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).

  • Self-igniting internal combustion engine
    Patent number: 7059295
    Abstract: A method is provided for operating an internal combustion piston engine, in which fuel is injected directly into a working chamber in the form of a pre-injection and main injection by means of an injection nozzle with a plurality of injection holes. The pre-injection takes place in a clocked manner. In order to minimize the moistening of the walls of the combustion chamber, a higher fuel pressure prevails in an injection device during the main injection than during the pre-injection. Furthermore, optimum homogenization of the pre-injected quantity of fuel is obtained by restricting the range of the injected fuel jets while simultaneously maximizing the atomization of the fuel particles and reinforcing the disintegration of the fuel jets during the clocked pre-injection.
    Type: Grant
    Filed: March 8, 2003
    Date of Patent: June 13, 2006
    Assignee: DaimlerChrysler AG
    Inventors: Matthias Blessing, Gerhard Koenig, Christian Krueger, Ruediger Preiss, Alois Raab, Martin Schnabel
  • Self-igniting internal combustion engine
    Publication number: 20050205052
    Abstract: A method is provided for operating an internal combustion piston engine, in which fuel is injected directly into a working chamber in the form of a pre-injection and main injection by means of an injection nozzle with a plurality of injection holes. The pre-injection takes place in a clocked manner. In order to minimize the moistening of the walls of the combustion chamber, a higher fuel pressure prevails in an injection device during the main injection than during the pre-injection. Furthermore, optimum homogenization of the pre-injected quantity of fuel is obtained by restricting the range of the injected fuel jets while simultaneously maximizing the atomization of the fuel particles and reinforcing the disintegration of the fuel jets during the clocked pre-injection.
    Type: Application
    Filed: March 8, 2003
    Publication date: September 22, 2005
    Inventors: Matthias Blessing, Gerhard Koenig, Christian Krueger, Ruediger Preiss, Alois Raab, Martin Schnabel