Patents by Assignee MTU Friedrichshafen

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
Application number: 20140209065
Abstract: Exemplary illustrations are provided of a common rail system for an internal combustion engine, having a rail for fuel and an injector for the purpose of injecting the fuel into a working space of the internal combustion engine, said injector having a fluid connection to said rail via a high-pressure conduit. The high-pressure conduit may have a high-pressure component with an individual reservoir, and the high-pressure conduit and/or the rail may have a pressure measurement device. The pressure measurement device may be coupled to a local logic and storage device of a decentralized, local electronic device which is designed for the purpose of locally analyzing and storing measurement data of the pressure measurement device, e.g., injector data and/or rail data, and the pressure measurement device is connected to the central electronic device via a bus, with the local logic and storage device connected between the same.
Type: Application
Filed: August 8, 2012
Issued: July 31, 2014
Assignee: MTU Friedrichshafen GmbH
Inventors: Manuel Boog, Gerald Fast, Robby Gerbeth, Michael Walder, Ralf Speetzen, Jörg Remele
Application number: 20140208701
Abstract: An air scoop-cyclone filter assembly having an air scoop for guiding untreated air, which including an inlet opening, a deflection area for deflecting untreated air and an outlet opening, and having a cyclone filter for cleaning untreated air, which is connected downstream of the air scoop in the flow direction and is connected in an airtight manner to the air scoop A perforated plate is arranged in the cyclone filter as a filter inlet opening. The perforated plate has a first passage area having a high number of holes, a second passage area having a low number of holes at the geodetically deepest point, and a baffle plate. The baffle plate distributes the untreated air flow through the first and second passage area and, with the outer wall of the air scoop, forms a collecting chamber that stabilizes the flow.
Type: Application
Filed: August 8, 2012
Issued: July 31, 2014
Assignee: MTU Friedrichshafen GmbH
Inventors: Dagmar Neu, Ingmar Berger, Patrick Spengler, Timo Stache, Dirk Pfuderer
Patent number: 8768546
Abstract: The invention relates to a method for controlling a railway vehicle having a double drive system, wherein each drive system comprises an internal combustion engine and a transmission unit, wherein a target drive torque (M(SL)) is provided as a power requirement by means of a drive lever, wherein an actual drive torque (M(IST)) of the railway vehicle is determined and a drive torque deviation is calculated from the target drive torque (M(SL)) and the actual drive torque (M(IST)). The method further comprises determining a prediction drive type (AAP), and a target drive type (AA(SL)) in the sense of a single or double drive, a target operating point (BP(SL)), and a target transmission stage (US(SL)) are set for the transmission units, based on the drive torque deviation and the prediction drive type (AAP), by means of a traction manager (9).
Type: Grant
Filed: March 11, 2010
Issued: July 1, 2014
Assignee: MTU Friedrichshafen GmbH
Inventors: Holger Bottlang, Ingo Lehmann, Michael Willmann
Application number: 20140162836
Abstract: A method for operating a traction vehicle, especially a locomotive, wherein the power delivered by a drive system is produced by at least two internal combustion engines, each of which is functionally connected to a generator for producing electric power, the engines preferably being gas engines, even more preferably lean gas engines. A previously determined number of separate power stages ranging from a minimum power up to a nominal power of the drive system is provided. The interval between all directly adjacent power stages is selected so that it corresponds to a constant fraction of the nominal power of the drive system.
Type: Application
Filed: December 9, 2013
Issued: June 12, 2014
Assignee: MTU Friedrichshafen GmbH
Inventor: Joachim HUG
Application number: 20140156168
Abstract: Proposed is a method for closed loop rail pressure control of a V-type internal combustion engine with an asymmetrical firing order, wherein an actual rail pressure is computed from the measured rail pressure; a system deviation is determined by means of the actual rail pressure and a set rail pressure; and wherein a correcting variable for actuating a pressure actuating element, in particular a suction throttle, for regulating the rail pressure is computed. The invention is characterized by the fact that the actual rail pressure is computed from the measured rail pressure by means of an averaging filter in that below a limit speed (nLi) the rail pressure is averaged over a constant time and in that above the limit speed (nLi) the rail pressure is averaged over a working cycle of the internal combustion engine.
Type: Application
Filed: June 5, 2012
Issued: June 5, 2014
Assignee: MTU Friedrichshafen GmbH
Inventor: Armin Dölker
Patent number: 8720407
Abstract: In an engine crankcase including a crankshaft supported at its front end by a crankshaft bearing having a crankshaft bearing cover including a bearing top part and a bearing bottom part and a front end gear drive arranged in front of the crankcase for driving auxiliary component and including a first drive gear mounted onto the crankshaft, a second gear mounted to the auxiliary component and an intermediate gear in meshing engagement with the first and second gears and supported on a support plate, the support plate is screwed onto the crankcase, the bearing top part and the bearing bottom part.
Type: Grant
Filed: October 21, 2011
Issued: May 13, 2014
Assignee: MTU Friedrichshafen GmbH
Inventors: Joachim Pfau, Jürgen Giesselmann, Manfred Sulzmann
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