Patents by Inventor Marc Hehle

Marc Hehle 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).

  • Publication number: 20100076632
    Abstract: A method for automatically controlling the speed of a ship, in which the engine speed (nMOT) is automatically controlled by a closed-loop engine speed control system as an inner closed-loop control system, the ship's speed (vS) is automatically controlled by a closed-loop ship's speed control system as an outer closed-loop control system, and the ship's set speed (vSL) is influenced as a reference input of the closed-loop ship's speed control system as a function of an external signal source. The ship's set speed (vSL) is corrected as a function of the underwater topography (TOPO).
    Type: Application
    Filed: July 9, 2009
    Publication date: March 25, 2010
    Applicant: MTU FRIEDRICHSHAFEN GMBH
    Inventors: Marc Hehle, Hans-Gerd Freisem, Olaf Kammertoens
  • Publication number: 20090082944
    Abstract: A process for controlling an internal combustion engine, in which an actual position of a reciprocating gas valve is detected by a position sensor, a positional deviation is calculated from the actual position and a zero position, a total length change of the reciprocating gas valve is calculated as a function of the temperature of the reciprocating gas valve, a valve clearance of the reciprocating gas valve is determined from the positional deviation and the total length change, and the further operation of the internal combustion engine is determined on the basis of the valve clearance.
    Type: Application
    Filed: September 22, 2008
    Publication date: March 26, 2009
    Inventors: Holger Frank, Marc Hehle, Michael Willmann
  • Publication number: 20090043482
    Abstract: A method for controlling an internal combustion engine having a common rail system together with individual accumulators. A rotational speed-control deviation (dn) is determined from a target rotational speed (nSL) that represents the set point for an outer control loop to control the rotational speed, as well as from an actual rotational speed (nIST). A target torque (MSL) is determined from the rotational speed-control deviation (dn) via a rotational speed controller as a master controller. A target injection duration (SD(SOLL)) is determined from the target torque (MSL). The target duration injection (SD(SOLL)) represents the set point for an inner control loop for controlling cylinder-specific injection duration. An injection duration deviation is determined from the target injection duration (SD(SOLL)) and from an actual injection duration.
    Type: Application
    Filed: August 6, 2008
    Publication date: February 12, 2009
    Inventors: Ralf Speetzen, Gunther Schmidt, Albert Kloos, Andreas Kunz, Michael Willmann, Jorg Remele, Marc Hehle