Patents by Inventor Christian Mittelberger

Christian Mittelberger 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: 20140100072
    Abstract: A group transmission device with an electric machine, a main transmission of a countershaft design, a splitter group of a countershaft design which is connected upstream of the main transmission and a range group connected downstream of the main transmission. In the area of the main transmission, the splitter group, and the range group, a gear ratio is variable by gear steps that can be engaged in, or disengaged from, the force flow by interlocking shifting elements. At least during a gearshift, torque of the electric machine can be introduced into the force flow in the area of the splitter group. The splitter group has at least three gear steps that can be engaged or disengaged, the main transmission has at least two gear steps that can be engaged or disengaged, and the range group has at least two gear steps that can be engaged and disengaged.
    Type: Application
    Filed: September 26, 2013
    Publication date: April 10, 2014
    Applicant: ZF Friedrichshafen AG
    Inventors: Johannes KALTENBACH, Christian MITTELBERGER
  • Patent number: 8475330
    Abstract: The invention relates to a method and a device for controlling a creep mode of a vehicle having a hybrid drive system (1, 1?), having a parallel hybrid drivetrain (2, 2?) comprising an internal combustion engine (3), at least one electrical machine (5), a first switching element (4) designed as a frictional element and disposed between the internal combustion engine (3) and the electrical machine (5), by means of which the internal combustion engine (3) can be connected to the electrical machine (5), a gearbox (7), an output (26), and at least one second switching element (6) designed as a frictional element and disposed between the electrical machine (5) and the output (26), by means of which the electrical machine (5) can be operationally connected to the output (26).
    Type: Grant
    Filed: December 2, 2008
    Date of Patent: July 2, 2013
    Assignee: ZF Friedrichshafen AG
    Inventors: Johannes Kaltenbach, Kai Bornträger, Stefan Wallner, Christian Mittelberger
  • Patent number: 8396619
    Abstract: A vehicle control system with a hybrid drive comprising an engine and an electric motor and a plurality of functional components each divided into a strategy sub-component, a control sub-component and an actuator sub-component. The functional components include at least engine, transmission and hybrid functional components. The strategy sub-component (8) of the hybrid functional component (4) comprises an operating status prescription module (17) which reads in a first quantity of data from functional components in order to determine a prescribed value for the operating status of the hybrid drive, processes the read in data in order to produce a second quantity of output variables, and in a second sub-module (29), determines the prescribed value for the operating status of the hybrid drive using the output variables from the first sub-module (27) and with the help of automatic status-determining mechanism.
    Type: Grant
    Filed: October 16, 2008
    Date of Patent: March 12, 2013
    Assignee: ZF Friedrichshafen AG
    Inventors: Notker Amann, Christian Mittelberger, Stefan Blattner
  • Patent number: 8386142
    Abstract: A motor vehicle control system for controlling a motor vehicle with a hybrid drive comprising an internal combustion engine and an electric motor, with a strategy sub-component, a control sub-component and an actuator sub-component. The functional components include at least an internal combustion engine functional component, a transmission functional component, such that the strategy sub-component (8) of the hybrid functional component (4) comprises an operating status prescription module which determines a prescribed value for the operating status of the hybrid drive and transmits the prescribed value to the control sub-component (9) of the hybrid functional component (4) such that the control sub-component (9) of the hybrid functional component (4) comprises a first module (18) and a second module (23).
    Type: Grant
    Filed: October 16, 2008
    Date of Patent: February 26, 2013
    Assignee: ZF Friedrichshafen AG
    Inventors: Winfried Fakler, Notker Amann, Christian Mittelberger, Mesut Er, Stefan Blattner, Johannes Kaltenbach, Stefan Wallner
  • Patent number: 8290655
    Abstract: A control system for controlling a vehicle with a hybrid drive comprising an internal combustion engine and an electric motor and a plurality of functional components each divided into strategy, control and actuator sub-components. The functional components include engine, transmission and hybrid functional components. The strategy sub-component of the hybrid functional component comprises an operating status prescription module which determines a recommended value for the operating status of the hybrid drive and transmits the recommended value to the control sub-component.
    Type: Grant
    Filed: October 16, 2008
    Date of Patent: October 16, 2012
    Assignee: ZF Friedrichshafen AG
    Inventors: Winfried Fakler, Notker Amann, Christian Mittelberger, Mesut Er, Stefan Blattner, Johannes Kaltenbach, Stefan Wallner
  • Patent number: 8272992
    Abstract: A process of operating a motor vehicle drive train that comprises at least one hybrid drive having a combustion engine and an electric motor with a clutch connected between the combustion engine and the electric motor, and an automatic transmission is arranged between the hybrid drive and an output. The process including the step of disengaging the clutch to carry out a shift, after a reduction of load at the internal combustion engine and after a reduction of the torque that is transmitted between the internal combustion engine and the electric motor. Subsequently carrying out a gear shift by the automatic transmission and, thereafter, increasing the torque that is transmitted by the clutch. Increasing the load from the combustion engine, and optionally engaging the clutch. A load transfer by the electric motor occurs before and/or after the gear shift in the transmission is carried out.
    Type: Grant
    Filed: October 27, 2009
    Date of Patent: September 25, 2012
    Assignee: ZF Friedrichshafen AG
    Inventors: Christian Mittelberger, Mesut Er, Johannes Kaltenbach
  • Patent number: 8246509
    Abstract: A method for operating a drive train of a motor vehicle. The drive train comprising a hybrid drive with an internal combustion engine and an electric motor, a transmission arranged between the hybrid drive and a drive output, and a clutch arranged between the internal combustion engine and the electric motor. The internal combustion engine is started by engaging the clutch only when the electric motor is providing drive power. In this situation when shifting gears in the transmission with interruption of the traction force, immediately after the gear change and during a load build-up phase of the shift operation, the internal combustion engine is started by the electric motor without traction force interruption. The clutch is controlled to partially engage to start the combustion engine and then it is completely disengaged before reaching a synchronous speed between the combustion engine and the electric motor.
    Type: Grant
    Filed: September 16, 2008
    Date of Patent: August 21, 2012
    Assignee: ZF Friedrichshafen
    Inventors: Christian Mittelberger, Stefan Blattner
  • Patent number: 8239110
    Abstract: A method of operating a drivetrain of a motor vehicle. The drivetrain comprises a drive aggregate formed as a hybrid drive with a combustion engine and an electric machine, and a transmission connected between the drive aggregate and a drive output. The drivetrain also comprises a pressure reservoir system with at least one pressure reservoir and at least one pressure generator by the combustion engine in order to fill the pressure reservoir. A pressure in the pressure reservoir of the pressure reservoir system is measured and a value of the actual pressure, in the pressure reservoir system, is compared with at least one threshold value. When the actual pressure value is higher than a threshold value, stopping of the combustion engine is permitted, whereas if the actual pressure value is lower than the threshold value, stopping of the combustion engine is not permitted.
    Type: Grant
    Filed: January 27, 2010
    Date of Patent: August 7, 2012
    Assignee: ZF Friedrichshafen AG
    Inventors: Johannes Kaltenbach, Notker Amann, Alexander Banerjee, Christian Mittelberger, Mesut Er
  • Patent number: 8182392
    Abstract: A method for operating a drive train of a motor vehicle. The drive train comprising a hybrid drive with an internal combustion engine and an electric motor, a transmission arranged between the hybrid drive and a drive output, and a clutch arranged between the internal combustion engine and the electric motor. The internal combustion engine is started by engaging the clutch only when the electric motor is providing drive power. In this situation when shifting gears in the transmission with interruption of the traction force, immediately after the gear change and during a load build-up phase of the shift operation, the internal combustion engine is started by the electric motor without traction force interruption. The clutch is controlled to partially engage to start the combustion engine and then it is completely disengaged before reaching a synchronous speed between the combustion engine and the electric motor.
    Type: Grant
    Filed: September 16, 2008
    Date of Patent: May 22, 2012
    Assignee: ZF Friedrichshafen AG
    Inventors: Christian Mittelberger, Stefan Blattner
  • Patent number: 8123657
    Abstract: A method of operating a drive train comprising a hybrid drive with a combustion engine and an electric motor; a transmission positioned between the hybrid drive and the output; and a clutch positioned between the combustion engine and the electric motor. When the electric motor exclusively drives the vehicle, the combustion engine can be started by engaging the clutch. At the time when the electric motor permanently or without traction force interruption is coupled to the output, and the rotational speed of the electric motor is greater than the starting rotational speed of the combustion engine, and a clutch, positioned between the combustion engine and the electric motor, is engagedly and disengagedly controlled so that the clutch is brought into slippage, via partial engagement, to start the combustion engine, and thereafter the clutch is completely disengaged before reaching a synchronous rotational speed between the combustion engine and the electric motor.
    Type: Grant
    Filed: September 16, 2008
    Date of Patent: February 28, 2012
    Assignee: ZF Friedrichshafen AG
    Inventors: Christian Mittelberger, Johannes Kaltenbach, Stefan Blattner
  • Publication number: 20110190969
    Abstract: The invention relates to a method for controlling and/or regulating at least one partial load transfer in a hybrid drive arrangement of a motor vehicle. According to said method, a driver's desired torque (MDriver) is applied by at least one electric motor and by an internal combustion engine and the torque (MEM) that is to be applied by the electric motor and the torque (MVM) that is to be applied by the internal combustion engine are controlled using overlapping functions.
    Type: Application
    Filed: December 1, 2008
    Publication date: August 4, 2011
    Applicant: ZF Friedrichshafen AG
    Inventors: Notker Amann, Christian Mittelberger, Johannes Kaltenbach
  • Publication number: 20110166726
    Abstract: A control system for controlling a vehicle with a hybrid drive comprising an internal combustion engine and an electric motor and a plurality of functional components each divided into at least a strategy sub-component, a control sub-component and an actuator sub-component, the functional components including at least an engine functional component, a transmission functional component and a hybrid functional component, such that the strategy sub-component (8) of the hybrid functional component comprises an operating status prescription module which determines a recommended value for the operating status of the hybrid drive and transmits the recommended value to the control sub-component (9), and such that a possible recommended value that can be determined by the operating status prescription module is a preselected hybrid driving condition, and if the operating status prescription module of the strategy sub-component (8) transmits the preselected hybrid driving condition, as the recommended value, to the con
    Type: Application
    Filed: October 16, 2008
    Publication date: July 7, 2011
    Applicant: ZF FRIEDRICHSHAFEN AG
    Inventors: Winfried Fakler, Notker Amann, Christian Mittelberger, Mesut Er, Stefan Blattner, Johannes Kaltenbach, Stefan Wallner
  • Publication number: 20110054725
    Abstract: The invention proposes a method for transferring the desired values and/or the desired drive train states of the strategy for the operative functions in a hybrid vehicle, in particular in a parallel hybrid vehicle, comprising a hybrid control system which is divided into at least two functional layers, with one layer being in the form of a strategic layer and the second layer being in the form of an operative layer, in which method, in a first step, the desired drive train state is transmitted from the strategic layer to the operative layer, with the drive train state which is checked and accepted as a target then being transmitted from the operative layer to the strategic layer, with, in a next step, the drive train state which is currently valid after the change or after the switchover to the target state being transmitted from the operative layer to the strategic layer, and with the desired values for continuous variables of the new state then being calculated in the strategic layer and being transmitted t
    Type: Application
    Filed: October 22, 2008
    Publication date: March 3, 2011
    Inventors: Johannes Kaltenbach, Notker Amann, Christian Mittelberger, Stefan Blattner
  • Publication number: 20110039655
    Abstract: The invention relates to a method and a device for controlling a creep mode of a vehicle having a hybrid drive system (1, 1?), having a parallel hybrid drivetrain (2, 2?) comprising an internal combustion engine (3), at least one electrical machine (5), a first switching element (4) designed as a frictional element and disposed between the internal combustion engine (3) and the electrical machine (5), by means of which the internal combustion engine (3) can be connected to the electrical machine (5), a gearbox (7), an output (26), and at least one second switching element (6) designed as a frictional element and disposed between the electrical machine (5) and the output (26), by means of which the electrical machine (5) can be operationally connected to the output (26).
    Type: Application
    Filed: December 2, 2008
    Publication date: February 17, 2011
    Inventors: Johannes Kaltenbach, Kai Bornträger, Stefan Wallner, Christian Mittelberger
  • Publication number: 20100318251
    Abstract: A motor vehicle control system for controlling a motor vehicle with a hybrid drive comprising an engine and an electric motor and a plurality of functional components each divided into a strategy sub-component, a control sub-component and an actuator sub-component. The functional components include at least an engine functional component, a transmission functional component, and a hybrid functional component for controlling the electric motor and a clutch connected between the internal combustion engine and the electric motor.
    Type: Application
    Filed: October 16, 2008
    Publication date: December 16, 2010
    Applicant: ZF FRIEDRICHSHAFEN AG
    Inventors: Notker Amann, Christian Mittelberger, Stefan Blattner
  • Publication number: 20100304925
    Abstract: A motor vehicle control system for controlling a motor vehicle with a hybrid drive comprising an internal combustion engine and an electric motor, with a strategy sub-component, a control sub-component and an actuator sub-component.
    Type: Application
    Filed: October 16, 2008
    Publication date: December 2, 2010
    Applicant: ZF FRIEDRICHSHAFEN AG
    Inventors: Winfried Fakler, Notker Amann, Christian Mittelberger, Mesut Er, Stefan Blattner, Johannes Kaltenbach, Stefan Wallner
  • Publication number: 20100217508
    Abstract: A method of operating a drivetrain of a motor vehicle. The drivetrain comprises a drive aggregate formed as a hybrid drive with a combustion engine and an electric machine, and a transmission connected between the drive aggregate and a drive output. The drivetrain also comprises a pressure reservoir system with at least one pressure reservoir and at least one pressure generator by the combustion engine in order to fill the pressure reservoir. A pressure in the pressure reservoir of the pressure reservoir system is measured and a value of the actual pressure, in the pressure reservoir system, is compared with at least one threshold value. When the actual pressure value is higher than a threshold value, stopping of the combustion engine is permitted, whereas if the actual pressure value is lower than the threshold value, stopping of the combustion engine is not permitted.
    Type: Application
    Filed: January 27, 2010
    Publication date: August 26, 2010
    Applicant: ZF FRIEDRICHSHAFEN AG
    Inventors: Johannes KALTENBACH, Notker AMANN, Alexander BANERJEE, Christian MITTELBERGER, Mesut ER
  • Publication number: 20100204006
    Abstract: A method of operating a drive train comprising a hybrid drive with a combustion engine and an electric motor; a transmission positioned between the hybrid drive and the output; and a clutch positioned between the combustion engine and the electric motor. When the electric motor exclusively drives the vehicle, the combustion engine can be started by engaging the clutch. At the time when the electric motor permanently or without traction force interruption is coupled to the output, and the rotational speed of the electric motor is greater than the starting rotational speed of the combustion engine, and a clutch, positioned between the combustion engine and the electric motor, is engagedly and disengagedly controlled so that the clutch is brought into slippage, via partial engagement, to start the combustion engine, and thereafter the clutch is completely disengaged before reaching a synchronous rotational speed between the combustion engine and the electric motor.
    Type: Application
    Filed: September 16, 2008
    Publication date: August 12, 2010
    Applicant: ZF FRIEDRICHSHAFEN AG
    Inventors: Christian Mittelberger, Johannes Kaltenbach, Stefan Blattner
  • Publication number: 20100197450
    Abstract: A method for operating a drive train of a motor vehicle. The drive train comprising a hybrid drive with an internal combustion engine and an electric motor, a transmission arranged between the hybrid drive and a drive output, and a clutch arranged between the internal combustion engine and the electric motor. The internal combustion engine is started by engaging the clutch only when the electric motor is providing drive power. In this situation when shifting gears in the transmission with interruption of the traction force, immediately after the gear change and during a load build-up phase of the shift operation, the internal combustion engine is started by the electric motor without traction force interruption. The clutch is controlled to partially engage to start the combustion engine and then it is completely disengaged before reaching a synchronous speed between the combustion engine and the electric motor.
    Type: Application
    Filed: September 16, 2008
    Publication date: August 5, 2010
    Applicant: ZF FRIEDRICHSHAFEN AG
    Inventors: Christian Mittelberger, Stefan Blattner
  • Publication number: 20100125022
    Abstract: A process of operating a motor vehicle drive train that comprises at least one hybrid drive having a combustion engine and an electric motor with a clutch connected between the combustion engine and the electric motor, and an automatic transmission is arranged between the hybrid drive and an output. The process including the step of disengaging the clutch to carry out a shift, after a reduction of load at the internal combustion engine and after a reduction of the torque that is transmitted between the internal combustion engine and the electric motor. Subsequently carrying out a gear shift by the automatic transmission and, thereafter, increasing the torque that is transmitted by the clutch. Increasing the load from the combustion engine, and optionally engaging the clutch. A load transfer by the electric motor occurs before and/or after the gear shift in the transmission is carried out.
    Type: Application
    Filed: October 27, 2009
    Publication date: May 20, 2010
    Applicant: ZF FRIEDRICHSHAFEN AG
    Inventors: Christian MITTELBERGER, Mesut ER, Johannes KALTENBACH