Patents by Assignee MTU Friedrichshafen

Patent number: 8688352
Abstract: A method for automatically controlling an internal combustion engine, in which an axial displacement (s(t)) and an angle of rotation (w(t)) of a gas-exchange valve are measured during a valve stroke. A displacement deviation is computed from the displacement (s(t)) relative to a reference valve, and an angle of rotation deviation is computed from an initial value and an end value of the angle or rotation. The further operation of the internal combustion engine is set on the basis of the displacement deviation and the angle of rotation deviation.
Type: Grant
Filed: August 4, 2010
Issued: April 1, 2014
Assignee: MTU Friedrichshafen GmbH
Inventors: Marc Hehle, Holger Frank, Michael Willmann
Patent number: 8683983
Abstract: The invention relates to a method for regulating a stationary gas motor (1). In said method, a deviation of the regulated speed is calculated from a desired speed and an actual speed, a desired moment is determined as an adjustable variable from the deviation of the regulated speed by means of a speed governor, said desired moment being limited to an air ratio-limiting moment by limiting the moment, and a desired volume flow (VSL) is determined from the limited desired moment in order to define an angle (DKW1, DKW2) of the mixture throttle valve and an angle of the gas throttle valve.
Type: Grant
Filed: November 17, 2008
Issued: April 1, 2014
Assignee: MTU Friedrichshafen GmbH
Inventors: Johannes Baldauf, Peer Smuda, Ludwig Klaeser-Jenewein
Application number: 20140083083
Abstract: In a method for controlling the NOx concentration in the exhaust gas of an internal combustion engine in which an NOx control deviation is calculated from an actual NOx value and a desired NOx value, a control value is calculated based on the NOx control deviation via an NOx controller and by means of the control value at least one condition of the cylinder inlet flow volume of the internal combustion engine is adjusted in that, additionally, an adaption injection begin is determined in dependence on the control value of the NOx controller, and the injection begin is changed by the adaption injection begin.
Type: Application
Filed: October 8, 2013
Issued: March 27, 2014
Assignee: MTU FRIEDRICHSHAFEN GMBH
Inventors: Michael Prothmann, Andreas Flohr, Joerg Remele, Martin Lehmann, Alexander Bernhard, Andreas Krammer
Application number: 20140026560
Abstract: A relief valve for turbines of exhaust turbochargers. Hot exhaust gas flows against this type of relief valves and the relief valves heat up significantly. Sensitive components such as the springs or the membrane can be damaged as a result. The relief valves are normally designed so that the membrane and a radiation panel are adjacent to a first chamber. Air is continuously guided through the first chamber in order to specifically cool the membrane and protect the membrane from excessive heating.
Type: Application
Filed: March 8, 2012
Issued: January 30, 2014
Assignee: MTU Friedrichshafen Gmbh
Inventor: Michael Dobrowolski
Application number: 20140032189
Abstract: In a method for a model-based determination of a temperature distribution of an exhaust gas post-treatment unit, a differentiation is made between steady operating states and non-steady operating states by taking into account the axial and the radial temperature distribution, and, on the basis of virtual segmentation of the post-treatment unit, in particular the radial heat transfer to the surroundings is taken into account in the model-based determination for steady operating states, and for non-steady operating states the heat transfer from the exhaust gas which flows axially through the post-treatment unit to the segments is taken into account by a heat transfer coefficient k.
Type: Application
Filed: February 7, 2012
Issued: January 30, 2014
Assignee: MTU Friedrichshafen GmbH
Inventors: Marc Hehle, Ralf Müller, Jens Niemeyer, Jörg Remele, Guido Schäffner, Holger Sinzenich, Tim Späder
Application number: 20140030810
Abstract: A method and an arrangement for dynamic breakthrough detection is proposed. The arrangement comprises at least a transfer element, at least a memory unit in which sensor characteristic curves, at least a controller and an evaluation logic are stored.
Type: Application
Filed: February 7, 2012
Issued: January 30, 2014
Assignee: MTU Friedrichshafen GmbH
Inventor: Jens Niemeyer
Application number: 20130276743
Abstract: A crankcase for an internal combustion engine, having a suction arrangement which is assigned to the crankcase and is configured for ventilating the crankcase of blow-by gas, in particular a gas/oil mixture, to produce a limited vacuum in the crankcase is disclosed. The crankcase has at least one dividing wall which is configured to feed blow-by gas and to separate oil. A ventilating housing part and a carrier housing part which is arranged above the ventilating housing part in included in the crankcase. The dividing wall is formed between the ventilating housing part and the carrier housing part and a suction arrangement is formed in the form of a suction jet pump which is configured for extracting oil from the dividing wall.
Type: Application
Filed: October 21, 2011
Issued: October 24, 2013
Assignee: MTU Friedrichshafen GmbH
Inventors: Mathias Stätter, Josef Walter, Robby Gerbeth
Application number: 20130263833
Abstract: The disclosure relates to a carrier housing for an internal combustion engine having an engine block with a V arrangement of cylinders and having a charging group, designed for two-stage charging. The carrier housing is designed to bear at least a number of components of the charging group, and is designed to be arranged on an upper face of the engine block in an intermediate space of the V arrangement.
Type: Application
Filed: September 12, 2011
Issued: October 10, 2013
Assignee: MTU Friedrichshafen GmbH
Inventors: Walter Rothmund, Peter Cubon, Christopher Allnoch, Christian Brunner, Steffen Horscher, Roland Buchmann
Patent number: 8528328
Abstract: In an explosion protection for gas a turbine which includes a turbine wheel and a turbine housing surrounding the turbine wheel, wherein the explosion protection comprises a multi-layer structure of material of a high rupture strength, the explosion protection is in the form of an essentially closed pot including a bottom section and a sash extending fully around the bottom section for accommodating the turbine housing.
Type: Grant
Filed: October 13, 2010
Issued: September 10, 2013
Assignee: MTU Friedrichshafen GmbH
Inventors: Peter Stroph, Ronald Hegner
Patent number: 8527181
Abstract: A a method for automatically controlling an internal combustion engine, in which an individual accumulator pressure (pE) of a common rail system is detected in a measurement interval and stored; in which an evaluation window is determined for the stored individual accumulation pressure (pE), within which window an injection was brought about; in which, in a first step, both a representative injection start and a trial injection end are determined in this evaluation window as a function of the detected pressure values, and, in a second step, both a trial injection start and a representative injection end are determined in this evaluation window as a function of the detected pressure values; in which the representative injection start is checked for plausibility against the trial injection start; and in which the representative injection end is checked for plausibility against the trial injection end.
Type: Grant
Filed: November 30, 2010
Issued: September 3, 2013
Assignee: MTU Friedrichshafen GmbH
Inventors: Michael Walder, Robby Gerbeth
Application number: 20130206109
Abstract: A method for closed-loop control and open-loop control of an internal combustion engine having a common rail system is closed. In the proposed method, the rail pressure (pCR) is determined in that an electronic engine control unit specifies the flow rate of a high-pressure pump into the rail via an intake throttle on the low-pressure side. An intake throttle actuation function, by which the intake throttle is temporarily actuated, is set to recur over time in the case of known idle time of the internal combustion engine and an actuated engine control unit.
Type: Application
Filed: January 30, 2013
Issued: August 15, 2013
Assignee: MTU Friedrichshafen GmbH
Inventor: MTU Friedrichshafen GmbH
Patent number: 8450863
Abstract: A vibration dampened power generation aggregate including an internal combustion engine, generator and outlet box mounted upon a frame having vibration dampening mounts for the power generation aggregates. The outlet box as an interior space divided into compartments for the placement of accessories, switches and generator governors. The frame has a first side and a second side and the power generation aggregate is mounted on the frame such that the mass of the power generation aggregate is evenly distributed on the first and second sides to reduce harmonic vibration and sound transmission of the power generation aggregate on the frame during aggregate operation.
Type: Grant
Filed: March 4, 2010
Issued: May 28, 2013
Assignee: MTU Friedrichshafen GmbH
Inventors: Wolfgang Farr, Todd Riemann, Kurt Snaza
Patent number: 8443766
Abstract: A method for automatically controlling an internal combustion engine, where, during normal operation in a first controller mode, a charge air temperature controller is set as dominant for a map-controlled thermostatic valve for automatically controlling the charge air temperature (TLL), or, during normal operation in a second controller mode, a coolant temperature limit controller is set as dominant for the map-controlled thermostatic valve for automatically controlling the coolant temperature (TKM). If a charge air temperature sensor fails, the second controller mode is set with the coolant temperature limit controller dominant, and if a coolant temperature sensor fails, the first controller mode is set with the charge air temperature controller dominant.
Type: Grant
Filed: December 17, 2008
Issued: May 21, 2013
Assignee: MTU Friedrichshafen GmbH
Inventor: Armin Dölker
Application number: 20130099653
Abstract: A pre-chamber sparkplug is suggested with a central electrode, with at least one ground electrode, which is distanced from the central electrode forming a spark gap, and with at least one transfer bore in a pre-chamber cap. The ground electrode comprises an internal circumferential area, which faces the central electrode, and an external circumferential area, which faces away from the central electrode. The internal circumferential area of the ground electrode shows a concave progression in the longitudinal direction of the pre-chamber sparkplug, subjected to a tensile force, and the external circumferential area shows a convex progression in the longitudinal direction of the pre-chamber sparkplug, subjected to a pressure.
Type: Application
Filed: May 27, 2011
Issued: April 25, 2013
Assignee: MTU Friedrichshafen GmbH
Inventor: Anko Ernst
Patent number: 8418680
Abstract: In a gas guide system, a combustion engine and a method for operating the engine comprising a gas supply arrangement for supplying gas to the engine, a gas discharge system including an exhaust gas treatment unit for releasing gas from the engine, the gas guide system including a first partial gas discharge line for discharging a first partial gas stream from a first fired cylinder group via the exhaust gas treatment unit and a second gas discharge line for discharging a second partial gas stream from a second unfired cylinder group separately from the hot gas stream directed through the exhaust gas treatment unit to keep it at operating temperatures.
Type: Grant
Filed: August 5, 2010
Issued: April 16, 2013
Assignee: MTU Friedrichshafen GmbH
Inventors: Günter Zitzler, Werner Kasper
Patent number: 8403627
Abstract: In a water pump for pumping coolant in a low temperature and a high temperature circuit with low temperature and high temperature housings each including a spiral flow guide structure, and a single rotor disposed in the joined housings and having a low temperature rotor part for pumping coolant through the low temperature circuit and a high temperature rotor part for pumping coolant through the high temperature circuit, the housings are joined with a heat isolating structure disposed between the flow guide structures of the high temperature and the low temperature housings to limit heat transfer from the high temperature coolant pumped through the high temperature housing to the low temperature coolant pumped through the low temperature housing.
Type: Grant
Filed: November 14, 2009
Issued: March 26, 2013
Assignee: MTU Friedrichshafen GmbH
Inventors: Michael Hartmann, Manfred Sulzmann
Patent number: 8381703
Abstract: A method for calibrating an accelerator pedal during a driving operation, in which the mechanical position of the accelerator pedal is converted by at least one potentiometer to an electrical signal value and read in by an electronic engine control unit. An idle limit for an idle position of the accelerator pedal and a full-load limit for a full-load position of the accelerator pedal are set as initial values. An idle signal value that is less than or equal to the idle limit is stored in a potentiometer-specific idle data memory for each potentiometer, a representative idle signal value is determined from the stored idle signal values, and this value is set as the determining idle position of the accelerator pedal specific to each potentiometer.
Type: Grant
Filed: April 9, 2009
Issued: February 26, 2013
Assignee: MTU Friedrichshafen GmbH
Inventors: Christoph Hund, Rudolf Fensterle
Patent number: 8381704
Abstract: A method for assigning addresses to injectors of an internal combustion machine, wherein, prior to the starting procedure, an electronic motor control device selects a first injector by activating the first injector by a first control line from the electronic motor control device. The electronic motor control device is arranged on a data bus to which the electronic motor control device and all injectors are connected. A first address value is placed on the motor control device and the first injector assumes the first address value as the address assigned to it.
Type: Grant
Filed: March 17, 2009
Issued: February 26, 2013
Assignee: MTU Friedrichshafen GmbH
Inventors: Albrecht Debelak, Andreas Schneider, Aron Toth
Patent number: 8340885
Abstract: The invention proposes a method for controlling a stationary gas motor (1), wherein a rotational speed control deviation is calculated from a target rotational speed (nSL) and a current rotational speed (nIST), a target torque is determined from the rotational speed control deviation as the controlled variable, wherein a mixture throttle angle (DKW1, DKW2) is determined for the determination of a mixture volume flow and of a current mixture pressure (p1 (IST), p2(IST)) in a receiver pipe (12, 13) upstream of the intake valves of the gas motor (1) as a function of the target volume flow, and wherein a gas throttle angle is determined for determining a gas volume flow as the gas content in a gas/air mixture, also as a function of the target volume flow.
Type: Grant
Filed: September 19, 2008
Issued: December 25, 2012
Assignee: MTU Friedrichshafen GmbH
Inventors: Johannes Baldauf, Ludwig Kläser-Jenewein, Peer Smuda
Application number: 20120321909
Abstract: The invention relates to a multilayered bearing shell (2) comprising a back metal layer (3) as a carrier element for the layer structure and at least one further bearing layer joined to the back metal layer (3), wherein the back metal layer (3) is made from a bronze. The back metal layer (3) contains in addition to copper, which forms the matrix of the bronze, tin in a proportion selected from a range with a lower limit of 1.25 wt. % and an upper limit of 12 wt. %, zinc in a proportion selected from a range with a lower limit of 0.25 wt. % and an upper limit of 6 wt. % and phosphorus in a proportion selected from a range with a lower limit of 0.01 wt. % and an upper limit of 0.5 wt. %.
Type: Application
Filed: June 13, 2012
Issued: December 20, 2012
Assignees: MTU FRIEDRICHSHAFEN GMBH, MIBA GLEITLAGER GMBH
Inventors: Reiner BOESCHEN, Robert MERGEN, Falko LANGBEIN, Ulrich SCHMID