Patents Assigned to MTU
  • Method and device for ascertaining an edge layer characteristic of a component
    Patent number: 9671372
    Abstract: The invention relates to a method and device for ascertaining an edge layer characteristic of a component (12), in particular a component (12) for an aircraft engine. In the method, a reference body (22) with a known edge layer characteristic is arranged on the surface of the component (12). An ultrasonic wave (18) is introduced into the surfaces of the component (12) and the reference object (22) by an ultrasonic transmitter (16). An ultrasonic wave (18) resulting from the exchange between the component (12) and the reference body (22) is detected by an ultrasonic detector (20), and an edge layer characteristic of the component (12) is ascertained by an ascertaining device (28) using a difference between the generated ultrasonic wave (18) and the resulting ultrasonic wave (18).
    Type: Grant
    Filed: October 29, 2013
    Date of Patent: June 6, 2017
    Assignee: MTU AERO ENGINES AG
    Inventors: Joachim Bamberg, Roland Hessert
  • Mixture-charged gas engine and method for compensating for volumetric efficiency deviations in a mixture-charged gas engine
    Patent number: 9670828
    Abstract: A mixture-charged gas engine includes at least one cylinder. A combustion chamber delimited by a cylinder head, a cylinder wall, and a piston, which can be moved in the cylinder, is arranged in the at least one cylinder, and the combustion chamber is divided into a main combustion chamber and at least one pre-chamber fluidically connected to the main combustion chamber via at least one firing channel. An air-/combustion gas mixture can be supplied to the main combustion chamber via an inlet valve during an intake stroke of the piston. The mixture-charged gas engine is characterized in that a separate combustion gas supply is provided for the at least one pre-chamber.
    Type: Grant
    Filed: May 6, 2015
    Date of Patent: June 6, 2017
    Assignee: MTU Friedrichshafen GmbH
    Inventors: Anko Ernst, Udo Sander
  • Locking Element for a Borescope Opening of a Gas Turbine
    Publication number: 20170152758
    Abstract: A locking element for a borescope opening of a gas turbine is disclosed. The borescope opening includes a radially inner opening edge facing a gas-carrying annular channel of the gas turbine where the locking element includes a main section and a locking section connected to the main section. The locking section is configured at least partially in a rotationally-symmetric manner with regard to a longitudinal axis of the locking element. The locking element is dimensioned such that the locking section protrudes partially over the radially inner opening edge of the borescope opening in the inserted state into the borescope opening.
    Type: Application
    Filed: November 29, 2016
    Publication date: June 1, 2017
    Applicant: MTU Aero Engines AG
    Inventors: Petra KUFNER, Markus SCHLEMMER, Walter GIEG, Oliver THIELE, Inga MAHLE
  • Method for adjusting an injection behavior of injectors in an internal combustion engine, engine control unit and system for adjusting an injection behavior
    Patent number: 9664134
    Abstract: The invention relates to a method for adjusting an injection behavior of injectors in an internal combustion engine, including the following steps: switching off an injector; detecting a crank angle signal of the internal combustion engine; transforming the crank angle signal into the frequency range by way of a discrete Fourier transformation; detecting and storing a quantity of the harmonic of the 0.5th order of the Fourier transform of the crank angle signal, and assigning the quantity to the switched-off injector; switching on the switched-off injector; performing the previous steps sequentially for all injectors of the internal combustion engine; forming an average value of the stored quantities with respect to all injectors, and correcting the control of the injectors using a deviation from the average value of a quantity associated with an injector that is to be corrected.
    Type: Grant
    Filed: April 10, 2015
    Date of Patent: May 30, 2017
    Assignee: MTU Friedrichshafen GmbH
    Inventors: Jörg Remele, Aron Toth
  • Clamping ring for a turbomachine
    Patent number: 9664065
    Abstract: A turbomachine having a flow channel (6) and a housing (1, 2) which radially surrounds the flow channel, at least one sealing or lining element (11) being situated between the flow channel and the housing, at least one clamping ring (14) being provided, which is situated circumferentially around the flow channel and which is situated in such a way that it abuts at least one contact surface (22) of the at least one sealing or lining element (11).
    Type: Grant
    Filed: August 7, 2013
    Date of Patent: May 30, 2017
    Assignee: MTU Aero Engines AG
    Inventors: Manfred Feldmann, Norbert Schinko, Sebastian Kaltenbach, Christian Eichler
  • Sealing device and turbomachine
    Patent number: 9664059
    Abstract: A sealing device (1) is disclosed for sealing a radially inner gas channel (2) between a guide vane ring (4) and a rotor (6) of a turbomachine, wherein the sealing device (1) has a sealing ring (8) for forming a sealed space (10) with a rear segment with an inner wall structure (30) oriented in the opposite direction, which are joined to each other via an annular arch (32), wherein the radial flange (18) transitions into the outer wall structure (28) and the cylinder (26) forms the sealing ring (8), wherein the inner wall structure (30) transitions, via an annular web (36), into at least one inner body segment (38, 50), wherein the sealing device (1) has a uniform, preferably relatively reduced wall thickness over its individual segments integrally formed with one another, so that the sealing device (1) is resilient within certain limits.
    Type: Grant
    Filed: June 23, 2014
    Date of Patent: May 30, 2017
    Assignee: MTU AERO ENGINES AG
    Inventors: Manfred Feldmann, Thomas Hess
  • Stator vane segment of a fluid flow machine and turbine
    Patent number: 9664057
    Abstract: A stator vane segment (100) of a fluid flow machine, having an upstream casing-side attachment (1) and/or a downstream casing-side attachment (3), and a platform (5). The attachments are provided on the platform (5). The platform (5) has a first sealing section (17) and extends in the direction of flow beyond a connection region (15) that connects the rearward attachment (3) to the platform (5). The first sealing section (17) that is located in a section (18) downstream of the connection region (15) has a first slot (19) which is continuous in the circumferential direction. The present invention also relates to a turbine having at least one stator vane segment (100).
    Type: Grant
    Filed: June 4, 2014
    Date of Patent: May 30, 2017
    Assignee: MTU Aero Engines AG
    Inventors: Manfred Feldmann, Norbert Schinko, Janine Sangl, Alexander Buck
  • Thrust deflecting device and aircraft engine
    Patent number: 9664141
    Abstract: A thrust deflecting device for deflecting a thrust stream is disclosed, which includes a flap system having a plurality of deflecting flaps, each of which is pivotable around its yaw axis, the flap system being situated between parallel control surfaces such as baffle plates which, together with the flap system, form a box structure, which is pivotable around a pivot axis running in the direction of the transverse axis for the purpose of deflecting the thrust stream in the pitch direction, an aircraft engine also being disclosed.
    Type: Grant
    Filed: June 9, 2014
    Date of Patent: May 30, 2017
    Assignee: MTU Aero Engines AG
    Inventors: Hermann Klingels, Stephan Klaen, Christian Scherer, Uwe Vogel
  • Rotor for a turbomachine
    Patent number: 9657581
    Abstract: A rotor for a turbomachine, in particular for a jet engine, having a blade ring which includes multiple differently designed rotor blades (10a, 10b) having blade platforms (14a, 14b) engaged flush with one another, the blade ring including at least two groups of differently designed rotor blades (10a, 10b), each group of rotor blades (10a, 10b) being assigned blade platforms (14a, 14b), each of which is engageable flush with a matching blade platform (14a, 14b) of at least one other group of rotor blades (10a, 10b) and not with a blade platform (14a, 14b) of the same group of rotor blades (10a, 10b). A method for manufacturing a blade ring of a rotor for a turbomachine is also provided.
    Type: Grant
    Filed: January 22, 2013
    Date of Patent: May 23, 2017
    Assignee: MTU Aero Engines GmbH
    Inventors: Marcus Woehler, Martin Pernleitner, Rudolf Stanka
  • Method for controlling rail pressure
    Patent number: 9657669
    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: Grant
    Filed: June 5, 2012
    Date of Patent: May 23, 2017
    Assignee: MTU Friedrichshafen GmbH
    Inventor: Armin Dölker
  • Oxidation-resistant layer for TiAl materials and method for the production thereof
    Patent number: 9657395
    Abstract: The present invention relates to a protective layer for TiAl materials for affording protection against oxidation, said protective layer having a layer sequence which, proceeding from the inner side facing toward the TiAl material (1), has an inner aluminum oxide layer (5), a first gradient layer (6) comprising aluminum and a base metal with a base metal content increasing outward toward the surface side, a base metal layer (7), a second gradient layer (8) comprising aluminum and a base metal with an aluminum content increasing outward toward the surface side, and an outer aluminum oxide layer (9), and also to a method for the production thereof.
    Type: Grant
    Filed: October 30, 2015
    Date of Patent: May 23, 2017
    Assignee: MTU AERO ENGINES AG
    Inventors: Martin Schloffer, Nanxi Zheng
  • Airfoil having a profiled trailing edge for a fluid flow machine, blade, and integrally blade rotor
    Patent number: 9657576
    Abstract: The present invention relates to an airfoil for a fluid flow machine (100), having a suction side (5), a pressure side (7) and an airfoil trailing edge (200). The airfoil (100), at least in portions thereof, has a profile (9) in the region of the airfoil trailing edge (200), which profile extends over the suction side (5) and the pressure side (7) of the airfoil trailing edge (200). The present invention also relates to a blade and an integrally bladed rotor.
    Type: Grant
    Filed: April 8, 2014
    Date of Patent: May 23, 2017
    Assignee: MTU Aero Engines AG
    Inventors: Guenter Ramm, Christine Lang
  • METHOD AND DEVICE FOR THE QUALITY ASSURANCE OF AT LEAST ONE COMPONENT DURING THE PRODUCTION THEREOF BY A GENERATIVE PRODUCTION PROCESS
    Publication number: 20170136574
    Abstract: The invention relates to a method for the quality assurance of at least one component (14) during the production thereof, wherein the production takes place by means of at least one additive manufacturing process, which comprises the following steps: building up the component (14) layer by layer, and themographically recording at least one image of each individual layer applied. In order to facilitate nondestructive crack detection in a metal component (14) during the production process (inspection by means of an online process), at least some of the layers applied are subjected to a controlled heat treatment below the melting point of the material of the component before the thermographic recording of the associated image, wherein the heat treatment causes the last layer applied to radiate heat which, if at least one crack develops in the layer, exhibits a characteristic heat profile at the crack.
    Type: Application
    Filed: April 29, 2015
    Publication date: May 18, 2017
    Applicant: MTU Aero Engines AG
    Inventors: Gunter Zenzinger, Thomas Hess, Joachim Bamberg, Alexander Ladewig
  • Low noise compressor and turbine for geared turbofan engine
    Patent number: 9650965
    Abstract: A gas turbine engine according to an example of the present disclosure includes, among other things, a fan, a turbine section having a fan drive turbine rotor, and a compressor rotor. A gear reduction is configured to effect a reduction in a speed of the fan relative to an input speed from the fan drive turbine rotor. Each of the compressor rotor and the fan drive turbine rotor includes a number of blades in each of a plurality of blade rows. The number of blades are configured to operate at least some of the time at a rotational speed.
    Type: Grant
    Filed: February 3, 2016
    Date of Patent: May 16, 2017
    Assignees: United Technologies Corporation, MTU Aero Engines AG
    Inventors: David A. Topol, Bruce L. Morin, Detlef Korte
  • Turbine stage with a blow-out arrangement and method for blowing out a sealing gas flow
    Patent number: 9644488
    Abstract: A turbine stage having a gas channel in which at least one rotor assembly is disposed, is disclosed. A cavity communicates with the gas channel and is delimited by a front side of a rotor element and by a rotor element-mounted seal. A blow-out arrangement with at least one gas passage for blowing out a sealing gas flow into the cavity is provided, where the gas passage for blowing out the sealing gas flow is configured with a swirl in the circumferential direction and has an outlet opening that is offset radially outwardly from the rotor element-mounted seal.
    Type: Grant
    Filed: May 23, 2014
    Date of Patent: May 9, 2017
    Assignee: MTU Aero Engines AG
    Inventor: Alexander Boeck
  • Irradiation in generative fabrication
    Patent number: 9636769
    Abstract: The present invention relates to a method for the generative production of components, particularly of single-crystalline or directionally-solidified components, particularly for the production of components for turbomachines, in which the component is constructed in layers on a substrate or a previously produced part of the component (3), wherein a construction in layers takes place by melting of powder material in layers with a high-energy beam (14) and solidification of the powder melt (16) takes place, wherein the high-energy beam has a beam cross section (19) in the area of its impingement on the powder material that is altered in comparison to a circular or other symmetrical cross section and/or the beam energy is distributed non-uniformly, in particular asymmetrically or eccentrically, over the beam section.
    Type: Grant
    Filed: December 11, 2014
    Date of Patent: May 2, 2017
    Assignee: MTU Aero Engines AG
    Inventors: Thomas Goehler, Thomas Hess, Tobias Maiwald-Immer
  • Method for the closed-loop control of the rail pressure in a common-rail injection system of an internal combustion engine
    Patent number: 9624867
    Abstract: Proposed is a method for open-loop and closed-loop control of an internal combustion engine (1), the rail pressure (pCR) being controlled via a low pressure-side suction throttle valve (4) as the first pressure-adjusting element in a rail pressure control loop. The invention is characterized in that a rail pressure disturbance variable is generated to influence the rail pressure (pCR) via a high pressure-side pressure control valve (12) as the second pressure-adjusting element, by means of which fuel is redirected from the rail (6) into a fuel tank (2).
    Type: Grant
    Filed: June 17, 2010
    Date of Patent: April 18, 2017
    Assignee: MTU FRIEDRICHSHAFEN GMBH
    Inventor: Armin Dölker
  • Relief valve
    Patent number: 9624822
    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: Grant
    Filed: March 8, 2012
    Date of Patent: April 18, 2017
    Assignee: MTU FRIEDRICHSHAFEN GMBH
    Inventor: Michael Dobrowolski
  • Method for the control and regulation of a V-type internal combustion engine
    Patent number: 9624860
    Abstract: Disclosed is a method for the control and regulation of a V-type internal combustion engine (1), comprising an independent common rail system on the A side and an independent common rail system on the B-side, in which the rotational speed of the internal combustion engine (1) is regulated in a speed control loop and a nominal torque as an adjusted variable of the rotational speed governor is limited during the starting procedure to a starting torque for representing a nominal injection null set.
    Type: Grant
    Filed: October 20, 2010
    Date of Patent: April 18, 2017
    Assignee: MTU FRIEDRICHSHAFEN GMBH
    Inventor: Armin Dölker
  • Compressor comprising a stator vane assembly having an inner ring and a seal carrier secured thereto with a clamping element
    Patent number: 9624833
    Abstract: A compressor having a stator vane assembly having an inner ring and a seal carrier secured thereto, the seal carrier having two opposite seal carrier end faces and the inner ring having two inner ring end faces which face said seal carrier end faces and are received between said seal carrier end faces with an axial gap therebetween, at least one clamping element bearing axially with a first clamping element end face against the inner ring and with a second clamping element end face against the seal carrier and being axially resiliently clamped between the inner ring and the seal carrier. A compressor with a clamping element for radial clamping is also provided.
    Type: Grant
    Filed: March 4, 2013
    Date of Patent: April 18, 2017
    Assignee: MTU Aero Engines GmbH
    Inventors: Juergen Kraus, Felix Kern