Patents by Inventor Wolfgang Stoecklein

Wolfgang Stoecklein 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: 20180093210
    Abstract: A filter, including a plurality of annularly closed disks having a through-opening. The disks include at least one contact area projecting from a lateral surface for a contact with an adjoining disk, and radial flow-through areas adjoining the contact area, and the disks being situated as a disk stack.
    Type: Application
    Filed: April 20, 2016
    Publication date: April 5, 2018
    Inventors: Dietmar Schmieder, Andreas Jakobi, Henning Kreschel, Martin Mueller, Thomas Sebastian, Tilo Landenfeld, Wolfgang Stoecklein
  • Patent number: 9766290
    Abstract: A method is described for operating at least one magnetic switching element, at least one first connection of at least one sensor device being connected to at least one connection of a coil of the magnetic switching element, and the first connection or an additional connection of the sensor device being connected to a reference potential, and a measuring state being established in which at least one connection of the coil is essentially at least temporarily decoupled from the reference potential and/or from a source activating the coil, and at least one signal of at least one sensor of the sensor device being ascertained in the measuring state from at least one electrical potential at at least one connection of the coil.
    Type: Grant
    Filed: October 12, 2011
    Date of Patent: September 19, 2017
    Assignee: ROBERT BOSCH GMBH
    Inventors: Nestor Rodriguez-Amaya, Siegfried Ruthardt, Holger Rapp, Wolfgang Stoecklein, Bernd Berghaenel, Marco Beier
  • Patent number: 9624884
    Abstract: In a method for operating a magnetic switching element, at least one connection of at least one sensor device is connected to at least one connection of a coil of the magnetic switching element, and at least one measuring state is established in which the at least one connection of the coil is largely at least temporarily decoupled from a ground, a voltage source, and/or a current source activating the coil, and at least one auxiliary voltage and/or at least one auxiliary current is/are applied to the at least one connection of the coil in the measuring state, and at least one sensor signal is ascertained from at least one electrical potential, at least one potential difference, and/or at least one current flowing at the connections of the coil.
    Type: Grant
    Filed: October 12, 2011
    Date of Patent: April 18, 2017
    Assignee: ROBERT BOSCH GMBH
    Inventors: Nestor Rodriguez-Amaya, Siegfried Ruthardt, Holger Rapp, Wolfgang Stoecklein, Bernd Berghaenel, Marco Beier
  • Patent number: 9328707
    Abstract: The invention relates to a control chamber, the pressure of which determines the strokes or positions of a nozzle needle, and which is assigned to a force or pressure sensor in order to detect the progression of the control chamber pressure. Because the control chamber pressure significantly changes during the closing of the nozzle needle, the operating phases of the injector can be exactly determined from the sensor data and supplied to an engine controller.
    Type: Grant
    Filed: December 3, 2010
    Date of Patent: May 3, 2016
    Assignee: Robert Bosch GmbH
    Inventors: Nestor Rodriguez-Amaya, Siegfried Ruthardt, Holger Rapp, Wolfgang Stoecklein, Bernd Berghaenel, Marco Beier
  • Patent number: 9206758
    Abstract: A method for operating a fuel injection system of an internal combustion engine is described. The fuel injection system has an injector for metering fuel into a combustion chamber of the internal combustion engine. The injector has an actuator, a control valve and a nozzle needle. In the method, the actuator is supplied a voltage and/or a current during an activation period. The control valve is set into a lifting motion by the actuator. The injector is opened and closed by the nozzle needle, using the lifting motion of the control valve. A further time period is ascertained. The further time period ends at the closing time of the nozzle needle. A function is ascertained, which links the activation period to the further time period. A shortest activation period, for which the nozzle needle opens and produces an injection, is ascertained with the aid of the function. An opening delay period (do1) of the nozzle needle is ascertained as a function of the shortest time period.
    Type: Grant
    Filed: November 23, 2011
    Date of Patent: December 8, 2015
    Assignee: ROBERT BOSCH GMBH
    Inventors: Nestor Rodriguez-Amaya, Siegfried Ruthardt, Holger Rapp, Wolfgang Stoecklein, Bernd Berghaenel, Marco Beier
  • Patent number: 9068540
    Abstract: The invention relates to a fuel injector for injecting fuel into the combustion chamber of an internal combustion engine, comprising a nozzle needle (1) which is able to perform stroke motions and by the stroke motion of which at least one injection opening can be exposed or closed, and further comprising a control valve (2) for controlling the stroke motion of the nozzle needle (1) in that, depending on the respective switch position of the control valve (2), hydraulic pressure applied in closing direction to the nozzle needle (1) in a control chamber (3) is altered, and further comprising a sensor array (4) for detecting the needle closing time. According to the invention, the sensor array (4) is arranged in the low-pressure area of the fuel injector in a space (5) which is sealed with respect to the fuel-conducting area (6).
    Type: Grant
    Filed: October 18, 2011
    Date of Patent: June 30, 2015
    Assignee: Robert Bosch GmbH
    Inventors: Holger Rapp, Helmut Clauss, Wolfgang Stoecklein, Bernd Berghaenel, Marco Beier, Changyi Wang
  • Publication number: 20140027534
    Abstract: The invention relates to a fuel injector for a fuel injection system, in particular a common rail injection system, comprising a jet needle (2) which is guided in a stroke-movable manner in a high-pressure bore (1) of the fuel injector, wherein an injection opening (3) can be opened and closed via the stroke movement of said jet needle, and a fuel or pressure sensor (4) having at least one sensor element (5) made of a piezo electrical material for detecting characteristic pressure changes during opening and closing of the jet needle (2). According to the invention, the fuel or pressure sensor (4) is arranged in a low pressure region (6) of the fuel injector and can be loaded directly or indirectly by an axial force (F A) upon opening and closing of the jet needle (2), which is proportional to the control chamber pressure in a control chamber (7).
    Type: Application
    Filed: February 22, 2012
    Publication date: January 30, 2014
    Applicant: ROBERT BOSCH GMBH
    Inventors: Holger Rapp, Helmut Clauss, Wolfgang Stoecklein, Bernd Berghaenel, Marco Beier, Changyi Wang
  • Publication number: 20130312709
    Abstract: A method for operating a fuel injection system of an internal combustion engine is described. The fuel injection system has an injector for metering fuel into a combustion chamber of the internal combustion engine. The injector has an actuator, a control valve and a nozzle needle. In the method, the actuator is supplied a voltage and/or a current during an activation period. The control valve is set into a lifting motion by the actuator. The injector is opened and closed by the nozzle needle, using the lifting motion of the control valve. A further time period is ascertained. The further time period ends at the closing time of the nozzle needle. A function is ascertained, which links the activation period to the further time period. A shortest activation period, for which the nozzle needle opens and produces an injection, is ascertained with the aid of the function. An opening delay period (do1) of the nozzle needle is ascertained as a function of the shortest time period.
    Type: Application
    Filed: November 23, 2011
    Publication date: November 28, 2013
    Inventors: Nestor Rodriguez-Amaya, Siegfried Ruthardt, Holger Rapp, Wolfgang Stoecklein, Bernd Berghaenel, Marco Beier
  • Publication number: 20130300422
    Abstract: In a method for operating a magnetic switching element, at least one connection of at least one sensor device is connected to at least one connection of a coil of the magnetic switching element, and at least one measuring state is established in which the at least one connection of the coil is largely at least temporarily decoupled from a ground, a voltage source, and/or a current source activating the coil, and at least one auxiliary voltage and/or at least one auxiliary current is/are applied to the at least one connection of the coil in the measuring state, and at least one sensor signal is ascertained from at least one electrical potential, at least one potential difference, and/or at least one current flowing at the connections of the coil.
    Type: Application
    Filed: October 12, 2011
    Publication date: November 14, 2013
    Inventors: Nestor Rodriguez-Amaya, Siegfried Ruthardt, Holger Rapp, Wolfgang Stoecklein, Bernd Berghaenel, Marco Beier
  • Patent number: 8578896
    Abstract: A method for bounce suppression of a valve member operated by a piezo actuator during the closing phase of a valve in an internal combustion engine, having the following steps: partial discharging of the piezo actuator, whereby the valve member is braked even before reaching the valve seat, interruption of the discharge of the piezo actuator, whereby the piezo actuator is upset by the valve member and builds up an electric charge, renewed discharging of the piezo actuator, the residual charge after partial discharge and the charge built up during the charge interruption being at least partially dissipated. It is provided, according to the present invention, briefly to interrupt the discharge process, whereby the piezo actuator absorbs the energy of the valve member and, even before an elastic rebound takes place, the piezo actuator is discharged again, in order to dissipate the energy absorbed by the piezo actuator.
    Type: Grant
    Filed: January 26, 2009
    Date of Patent: November 12, 2013
    Assignee: Robert Bosch GmbH
    Inventors: Violaine Chassagnoux, Stefan Schuerg, Wolfgang Stoecklein
  • Publication number: 20130257439
    Abstract: A method is described for operating at least one magnetic switching element, at least one first connection of at least one sensor device being connected to at least one connection of a coil of the magnetic switching element, and the first connection or an additional connection of the sensor device being connected to a reference potential, and a measuring state being established in which at least one connection of the coil is essentially at least temporarily decoupled from the reference potential and/or from a source activating the coil, and at least one signal of at least one sensor of the sensor device being ascertained in the measuring state from at least one electrical potential at at least one connection of the coil.
    Type: Application
    Filed: October 12, 2011
    Publication date: October 3, 2013
    Inventors: Nestor Rodriguez-Amaya, Siegfried Ruthardt, Holger Rapp, Wolfgang Stoecklein, Bernd Berghaenel, Marco Beier
  • Publication number: 20130240639
    Abstract: The invention relates to a fuel injector for injecting fuel into the combustion chamber of an internal combustion engine, comprising a nozzle needle (1) which is able to perform stroke motions and by the stroke motion of which at least one injection opening can be exposed or closed, and further comprising a control valve (2) for controlling the stroke motion of the nozzle needle (1) in that, depending on the respective switch position of the control valve (2), hydraulic pressure applied in closing direction to the nozzle needle (1) in a control chamber (3) is altered, and further comprising a sensor array (4) for detecting the needle closing time. According to the invention, the sensor array (4) is arranged in the low-pressure area of the fuel injector in a space (5) which is sealed with respect to the fuel-conducting area (6).
    Type: Application
    Filed: October 18, 2011
    Publication date: September 19, 2013
    Applicant: ROBERT BOSCH GMBH
    Inventors: Holger Rapp, Helmut Clauss, Wolfgang Stoecklein, Bernd Berghaenel, Marco Beier, Changyi Wang
  • Publication number: 20120325936
    Abstract: The invention relates to a control chamber (7), the pressure of which determines the strokes or positions of a nozzle needle (6), and which is assigned to a force or pressure sensor (20) in order to detect the progression of the control chamber pressure. Because the control chamber pressure significantly changes during the closing of the nozzle needle (6), the operating phases of the injector can be exactly determined from the sensor data and supplied to an engine controller.
    Type: Application
    Filed: December 3, 2010
    Publication date: December 27, 2012
    Applicant: ROBERT BOSCH GMBH
    Inventors: Nestor Rodriguez-Amaya, Siegfried Ruthardt, Holger Rapp, Wolfgang Stoecklein, Bernd Berghaenel, Marco Beier
  • Patent number: 8186609
    Abstract: The present invention relates to a fuel injector for injecting fuel into a combustion chamber of an internal combustion engine, having a valve piston that is displaceably guided in an injector body in terms of lifting motions, whereby the lifting motion of the valve piston can be controlled by a control valve. The control valve has a valve needle with a guide bore, so that the needle is displaceably guided in the direction of a lifting axis in terms of lifting motions. A guide section integrally formed on an end of a valve piece extends into the guide bore for the displaceable guidance of the valve needle in terms of lifting motions. Along the lifting axis a vertical bore extends through the valve piece into the guide section, such that fuel is able to flow through the bore from a control chamber into an annular chamber introduced between the guide bore and the guide section for controlling the lifting motion of the valve piston.
    Type: Grant
    Filed: January 17, 2008
    Date of Patent: May 29, 2012
    Assignee: Robert Bosch GmbH
    Inventors: Holger Rapp, Wolfgang Stoecklein, Andreas Rettich
  • Publication number: 20120103379
    Abstract: A thermoelectric module having a plurality of p-n-couples, every two adjacent p-n-legs forming one p-n-couple. The p-n-legs are each manufactured from conductive materials. The p-n-legs of the plurality of p-n-couples are separated in an alternating sequence by an electrically insulating gap which creates a meandering current flow.
    Type: Application
    Filed: November 2, 2011
    Publication date: May 3, 2012
    Inventors: Ilona Krinn, Wolfgang Stoecklein, Manfred Schmitt, Ludwig Kemmler
  • Patent number: 7990023
    Abstract: An arrangement is proposed for forming a piezoelectric actuator, which has at least one piezoelectric element that in each case consists of a multi-layer structure of piezoelectric-layers, wherein internal electrodes arranged between the piezoelectric-layers in the direction of the build-up of the layers of the piezoelectric element, have an electrical voltage of different polarity alternately applied to them. Around the piezoelectric element, or in the case of multiple piezoelectric elements positioned in series in the activation direction, around the piezoelectric elements, and at least partially around the actuator head and the actuator foot there is arranged a covering system made from at least one layer of an insulating material. The at least one layer encloses the joints between the piezoelectric element or elements and the actuator head and the actuator foot, forming a seal.
    Type: Grant
    Filed: May 22, 2007
    Date of Patent: August 2, 2011
    Assignee: Robert Bosch GmbH
    Inventors: Albano De Paoli, Stefan Schuerg, Wolfgang Stoecklein, Holger Rapp, Thomas Pauer, Friedrich Boecking, Marco Holst, Helmut Sommariva, Claudia Klotz, Peter Cromme
  • Patent number: 7926737
    Abstract: A fuel injector for an internal combustion engine is proposed having a directly actuatable injection valve element. The fuel injector has a nozzle needle, axially guided in a nozzle body, and an actuator accommodated in an injector housing. The nozzle needle is connected to a coupling piston on the nozzle-needle side and the actuator is connected to a coupling piston on the actuator side. The coupling piston on the actuator side acts on a coupling chamber and the coupling piston on the nozzle-needle side acts on a control chamber. The nozzle needle is lifted from a nozzle-needle sealing seat as a function of the pressure in the control space. An intermediate plate is provided between injector housing and nozzle body. The plate has a conduit hydraulically connecting the coupling chamber to the control chamber. The conduit contains a hydraulic throttle which has at least two sections having different cross sections of flow.
    Type: Grant
    Filed: October 16, 2006
    Date of Patent: April 19, 2011
    Assignee: Robert Bosch GmbH
    Inventors: Wolfgang Stoecklein, Thomas Pauer, Christian Kuhnert
  • Publication number: 20110042594
    Abstract: A method for bounce suppression of a valve member operated by a piezo actuator during the closing phase of a valve in an internal combustion engine, having the following steps: partial discharging of the piezo actuator, whereby the valve member is braked even before reaching the valve seat, interruption of the discharge of the piezo actuator, whereby the piezo actuator is upset by the valve member and builds up an electric charge, renewed discharging of the piezo actuator, the residual charge after partial discharge and the charge built up during the charge interruption being at least partially dissipated. It is provided, according to the present invention, briefly to interrupt the discharge process, whereby the piezo actuator absorbs the energy of the valve member and, even before an elastic rebound takes place, the piezo actuator is discharged again, in order to dissipate the energy absorbed by the piezo actuator.
    Type: Application
    Filed: January 26, 2009
    Publication date: February 24, 2011
    Inventors: Violaine Chassagnoux, Stefan Schuerg, Wolfgang Stoecklein
  • Publication number: 20110000465
    Abstract: A method for controlling an injection system of an internal combustion engine, a fuel injection being performed using at least one piezoelectric actuator which acts directly or transmittedly on a nozzle needle of an injector, and an activation voltage determining the actuator operation being corrected as a function of a pressure wave influence of the fuel injection, provides that the pressure waves applied to the nozzle needle and caused by an injection are ascertained by measuring the actuator voltage during an injection break and the actuator voltage of a following injection is modulated in accordance with the pressure waves on the nozzle needle.
    Type: Application
    Filed: July 20, 2006
    Publication date: January 6, 2011
    Inventors: Wolfgang Stoecklein, Holger Rapp, Marco Gangi, Udo Schulz
  • Publication number: 20100319660
    Abstract: The present invention relates to a fuel injector for injecting fuel into a combustion chamber of an internal combustion engine, having a valve piston that is displaceably guided in an injector body in terms of lifting motions, whereby the lifting motion of the valve piston can be controlled by a control valve. The control valve has a valve needle with a guide bore, so that the needle is displaceably guided in the direction of a lifting axis in terms of lifting motions. A guide section integrally formed on an end of a valve piece extends into the guide bore for the displaceable guidance of the valve needle in terms of lifting motions. Along the lifting axis a vertical bore extends through the valve piece into the guide section, such that fuel is able to flow through the bore from a control chamber into an annular chamber introduced between the guide bore and the guide section for controlling the lifting motion of the valve piston.
    Type: Application
    Filed: January 17, 2008
    Publication date: December 23, 2010
    Inventors: Holger Rapp, Wolfgang Stoecklein, Andreas Rettich