Patents by Assignee MTU Friedrichshafen

Patent number: 9051888
Abstract: A method for automatically controlling a stationary gas engine, where an engine speed control deviation is computed from a set engine speed (nSL) and an actual engine speed (nIST), and a set torque is determined as a correcting variable from the speed control deviation by a speed controller, where a set volume flow is determined as a function of the set torque to establish a mixture throttle angle (DKW1, DKW2) and a gas throttle angle, and where the set volume flow is varied to adjust the gas throttle angle by a correction factor.
Type: Grant
Filed: January 30, 2009
Issued: June 9, 2015
Assignee: MTU FRIEDRICHSHAFEN GMBH
Inventors: Peer Smuda, Michael Prothmann, Ludwig Klaser-Jenewein
Patent number: 9038987
Abstract: For a flap assembly, in particular an exhaust gas flap assembly, with the flap mounted on both sides via bearing devices in the housing, the disclosure describes a design in which a bearing body is supported radially against an annular collar of the bearing device and, by way of the annular collar, is held braced in a radially spring-loaded manner in a predefined radial position.
Type: Grant
Filed: March 16, 2010
Issued: May 26, 2015
Assignee: MTU Friedrichshafen GmbH
Inventors: Ronald Hegner, Andreas Thoss
Patent number: 9038371
Abstract: In a supply arrangement for supplying a solution containing a reducing agent, in particular urea, to an exhaust gas system of an internal combustion engine wherein a supply line extending from a storage tank to an injector which is connected to the exhaust gas system includes an operating tank and a dosing arrangement, a return line extends between the dosing arrangement and the storage tank and the dosing arrangement includes a directional valve for directing solution to the injector during a first operating mode in which the engine is operating and, in a second operating mode in which the engine is shut down, directing the solution back to the storage tank for emptying the operating tank.
Type: Grant
Filed: August 8, 2011
Issued: May 26, 2015
Assignee: MTU FRIEDRICHSHAFEN GMBH
Inventor: Nicolas Gräter
Patent number: 9037324
Abstract: A method for controlling a ship propulsion system including a surface propeller, in which the desired capacity is interpreted as the target rotational value, the rotational speed control deviation is calculated from the desired rotational value and the actual rotational value of the internal combustion engine and an injection quantity for the rotational control of the internal combustion engine is determined using the rotational speed control deviation on a rotational speed controller. The trim position of the surface propeller is controlled by an arrangement controller in accordance with the capacity reserve of the internal combustion engine and the actual trim position and the effective rotational speed, the trim position being determined from the rotational speed control deviation.
Type: Grant
Filed: September 25, 2007
Issued: May 19, 2015
Assignee: MTU FRIEDRICHSHAFEN GMBH
Inventors: Christian Faller, Oliver Haller, Adelbert Kern, Alfred Moehrle, Markus Mueller, Michael Welte
Patent number: 9016061
Abstract: Disclosed is a pipe arrangement (1) comprising a pipe element (2) that is used to connect, in particular fluidically connect, a turbine outlet of one turbocharger (15) to a turbine inlet of another turbocharger (17). The pipe arrangement is characterized in that a first pipe section (8) of the pipe element (2) includes a first fastening device (14) for attaching a first turbocharger (15) as well as a second fastening device (20) for attaching the pipe element (2) to a first support element (21) of an internal combustion engine. Furthermore, a second pipe section (9) includes a third fastening device (16) for attaching a second turbocharger (17) as well as a fourth fastening device (24) for attaching the pipe element (2) to a second support element (25) of an internal combustion engine.
Type: Grant
Filed: November 4, 2010
Issued: April 28, 2015
Assignee: MTU Friedrichshafen GmbH
Inventors: Rolf Gunkel, Jörg Andre Reitz
Application number: 20150107550
Abstract: A method is proposed for controlling and regulating an internal combustion engine according to the HCCI combustion method, in which a first fuel in a basic mixture is ignited using a pilot fuel, and in which the fuel quantities of the first fuel and the pilot fuel are changed to represent an operating point of the internal combustion engine. The invention is characterized in that a target combustion energy (VE(SL)) is calculated as a function of a power demand and, based on the target combustion energy (VE(SL)), the fuel quantity of the first fuel and the fuel quantity of the pilot fuel are determined using a distribution factor (CHI), wherein the distribution factor (CHI) is calculated as a function of an actual combustion position (VL(IST)) to a target combustion position (VL(SL)) using a combustion position controller (18).
Type: Application
Filed: April 15, 2013
Issued: April 23, 2015
Assignee: MTU Friedrichshafen GmbH
Inventors: Jörg Remele, Christina Sauer, Aron Toth, Andreas Flohr, Alexander Bernhard, Florian Bach, Erika Schaefer, Ulrich Spicher, Christoph Teetz
Application number: 20150101314
Abstract: The invention relates to a method and an arrangement for operating an internal combustion engine. In the method a first distribution of values for at least one variable is used, the variable describing a physical property of the internal combustion engine, and over a second time period values for this variable are recorded and classified, such that a second distribution is determined. The first distribution is then compared with the second distribution such that the behavior of the internal combustion engine can be adapted on the basis thereof.
Type: Application
Filed: December 17, 2014
Issued: April 16, 2015
Assignee: MTU Friedrichshafen GmbH
Inventor: Tim Späder
Application number: 20150089928
Abstract: Reciprocating-piston internal combustion engines having different power outputs are to be equipped simply, reliably and inexpensively with a device for the selective catalytic reduction of the exhaust gases having an SCR module for a reciprocating-piston internal combustion engine, comprising a housing and/or a frame, an exhaust-gas section which delimits a flow duct for guiding through exhaust gas, having an inlet opening for introducing the exhaust gas and an outlet opening for discharging the exhaust gas, an SCR catalytic converter which is arranged inside the flow duct, at least one injection element for adding a reducing agent, for example ammonia or a urea solution, to the exhaust gas which is guided through the flow duct. This problem is solved by virtue of the fact that the SCR module comprises at least one delivery device (13) for feeding the reducing agent to the injection element at a predetermined pressure.
Type: Application
Filed: December 9, 2014
Issued: April 2, 2015
Assignee: MTU FRIEDRICHSHAFEN GMBH
Inventors: Benjamin Sauter, Holger Sinzenich, Katharina Görner, Mathias Bauknecht, Klaus Wehler
Patent number: 8965668
Abstract: A master/slave arrangement of an electronic engine control device with an engine identification module. The electronic engine control device controls and regulates the internal combustion machine. The engine identification module includes at least one microprocessor and a memory building block for storing an engine identification as well as engine specifics. The electronic engine control device and the engine identification module exchange data through an engine cable harness. The engine identification module is arranged inseparably at the crank housing of the internal combustion machine. The engine identification module can be removed from the crank housing as well as from the engine cable harness only by being destroyed.
Type: Grant
Filed: May 2, 2012
Issued: February 24, 2015
Assignee: MTU Friedrichshafen GmbH
Inventors: Albrecht Debelak, Andreas Schneider, Michael Wölki
Patent number: 8945475
Abstract: An exhaust post-treatment device is designed in a layered fashion and comprises an exhaust cleaning arrangement lying between a supply chamber and a transition chamber with soot filters lying at both sides of a denitrification-catalytic converter unit, with the transition chamber comprising a mixing chamber open towards the denitrification-catalytic converter unit, in which starting at the soot filters via separate guide channels, the exhaust is injected in the opposite direction of flow and which mixing chamber is limited by guide panels, which form walls of the guide channels extending encompassing along the housing towards the mixing chamber.
Type: Grant
Filed: May 9, 2011
Issued: February 3, 2015
Assignee: MTU Friedrichshafen GmbH
Inventors: Guido Schäffner, Hans Sudmanns, Claudia Riedel
Patent number: 8939129
Abstract: A gas mixer for mixing a first gas and a second gas, including a gas housing, a Venturi tube, a flow body for the first gas arranged in the Venturi tube to form a mixing gap, an inflow tube connected to the Venturi tube, to an inflow opening to the Venturi tube for the second gas, and an actuating element for varying the inflow cross section of the inflow opening. The actuating element has a first and a second actuating part which restrict the inflow cross section. The first actuating part is a first gas housing part and the second actuating part is a second gas housing part. At least one of the gas housing parts forms part of the Venturi tube and/or of the inflow tube At least one of the gas housing parts can be moved with respect to another and has a rotor of a linear motor.
Type: Grant
Filed: May 15, 2012
Issued: January 27, 2015
Assignee: MTU Friedrichshafen GmbH
Inventors: Johannes Prinz, Manolo Odermatt, Anko Ernst
Patent number: 8918266
Abstract: A method for automatic lambda control of an internal combustion engine, in which, upon detection of a predetermined operating state of the internal combustion engine, a calibration factor (KAL) is determined and in which, during the operation of the internal combustion engine, a lambda measuring signal (iP) is corrected by the calibration factor (KAL) and is set as the actual lambda value (Lam(IST)) for the automatic lambda control of the internal combustion engine. The predetermined operating state is recognized when an engine coastdown is initiated.
Type: Grant
Filed: September 16, 2011
Issued: December 23, 2014
Assignee: MTU Friedrichshafen GmbH
Inventors: Tobias Weiss, Michael Hönl, Matthias Schweitzer
Patent number: 8886441
Abstract: The invention relates to a method for the open-loop control and the closed-loop control of an internal combustion engine (1), the rail pressure (pCR) being controlled in a closed loop mode in the normal operating state and an emergency operation mode being activated once a defective rail pressure sensor (9) is detected, in which emergency operation the rail pressure (pCR) is controlled in an open loop mode. The invention is characterized in that in the emergency operation mode, the rail pressure (pCR) is gradually increased until a passive pressure relief valve (11) is activated which redirects fuel from the rail (6) to the fuel tank (2) when it is open.
Type: Grant
Filed: October 19, 2010
Issued: November 11, 2014
Assignee: MTU Friedrichshafen GmbH
Inventor: Armin Dölker
Patent number: 8886439
Abstract: Disclosed is a method for the control and regulation of an internal combustion engine (1), comprising an independent common rail system on the A-side and an independent common rail system on the B-side. During normal operation, the rail pressure (pCR(A), pCR(B)) is controlled in each common rail system via a low pressure-side suction throttle (4A, 4B) as the first pressure-adjusting element in a rail pressure control loop and, at the same time, the rail pressure (pCR(A), pCR(B)) is subjected to a rail pressure disturbance variable via a high pressure-side pressure control valve (11A, 11B) as a second pressure-adjusting element, by means of which a pressure control valve volume flow is redirected via the high pressure-side pressure control valve (11A, 11B) from the rail (6A, 6B) into a fuel tank (2).
Type: Grant
Filed: October 20, 2010
Issued: November 11, 2014
Assignee: MTU Friedrichshafen GmbH
Inventor: Armin Dölker
Patent number: 8870522
Abstract: In a centrifugal pump, in particular a radial or semi-axial pump including a housing with a pump chamber and a dry chamber, a drive shaft rotatably supported in the housing and connected to an impeller for pumping a liquid flow medium disposed in the pump chamber and a shaft seal arranged in an inner radial area for sealing the dry space with respect to the flow medium, a seal carrier is provided with a guide structure by which fluid flow medium is conducted from an outer radial area to an inner radial area for directing flow medium into the seal for lubrication and cooling of the seal.
Type: Grant
Filed: March 30, 2011
Issued: October 28, 2014
Assignee: MTU Friedrichshafen GmbH
Inventors: Wolfgang Reischmann, Alexej Vaulin, Joachim Ruck
Patent number: 8857291
Abstract: In a flywheel for mounting as a coupling element between an internal combustion engine and a machine to be driven thereby, including a flywheel flange for connecting the flywheel to the machine and a driver flange for connecting the flywheel to the crankshaft of the internal combustion engine, coupling structures are provided between the flywheel flange and the driver flange which coupling structures include insulating connecting areas which electrically insulate the flanges from each other.
Type: Grant
Filed: May 7, 2010
Issued: October 14, 2014
Assignee: MTU Friedrichshafen GmbH
Inventors: Christian Schäffer, Martin Kaifler
Patent number: 8857416
Abstract: In a charge air supply arrangement of an internal combustion engine with two stage charging in a combination with first and second charge air coolers, a double connection box is provided with a guide structure including a separation wall defining a lower guide area with a lower connection to the first charge air cooler disposed directly below the double connection box and an upper guide area with an upper connection to the second charge air cooler disposed directly on top of the double connection box. Also, in an internal combustion engine with such a charge air cooling arrangement, the charge air cooler arrangement is arranged on top of the engine.
Type: Grant
Filed: April 28, 2012
Issued: October 14, 2014
Assignee: MTU Friedrichshafen GmbH
Inventor: Hermann Baumann
Patent number: 8855889
Abstract: A method for open-loop and closed-loop control of an internal combustion engine (1) in which the rail pressure (pCR) is controlled via a low pressure-side suction throttle (4), as the first pressure-adjusting element in a rail pressure control loop. A rail pressure disturbance variable (VDRV) is generated to influence the rail pressure (pCR) via a high-pressure side pressure control valve (12), as the second pressure-adjusting element, by which fuel is redirected from the rail (6) into the fuel tank (2). The position of the high-pressure side pressure control valve (12) is determined by a PWM signal (PWMDV), which, when normal mode is set, is calculated as a function of the resulting target volume flow and, when protective mode is set, is temporarily set to a maximum value.
Type: Grant
Filed: June 17, 2010
Issued: October 7, 2014
Assignee: MTU Friedrichshafen GmbH
Inventor: Armin Dölker
Patent number: 8844501
Abstract: The invention relates to a control and regulation method for an internal combustion engine having a common rail system, wherein a rail pressure is regulated in normal operation in that a first actual rail pressure is determined via a first filter from the rail pressure, an offset is calculated from a target rail pressure and the first actual rail pressure, a variable is calculated via a pressure regulator from the offset and a PWM signal having a first PWM frequency (f1) for activation of a control process is determined in dependence on the variable.
Type: Grant
Filed: November 9, 2009
Issued: September 30, 2014
Assignee: MTU Friedrichshafen GmbH
Inventor: Armin Dölker
Application number: 20140230435
Abstract: The invention relates to an internal combustion machine (10), comprising a combustion engine (1) having an exhaust gas side (AGS) and a charging fluid side (LLS), and having a supercharger system (14) comprising an exhaust gas turbo charger (40) for charging the combustion engine (1), having a condenser array (41) on the charging fluid side (LLS) and a turbine arrangement (42) on the exhaust gas side (AGS), a compressor (3), the primary side (I) of which is connected to the charging fluid side (LLS), and the secondary side (II) of which is connected to the exhaust gas side (AGS). An electric machine (4) configured as a motor/generator is coupled to the combustion engine (1), wherein the electric machine (4) as a generator can be powered by the combustion engine (1), or can power the combustion engine (1) as a motor, wherein the compressor (3) can be powered directly by the electric machine (4) via a mechanical drive coupling (13).
Type: Application
Filed: July 10, 2012
Issued: August 21, 2014
Assignee: MTU Friedrichshafen GmbH
Inventors: Claus-Oliver Schmalzing, Holger Frank, Philippe Gorse, Peter Riegger
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