Patents Assigned to ZF Friedrichshafen
  • Patent number: 12384200
    Abstract: A drive axle (1) and a motor vehicle having the drive axle (1) are proposed. The drive axle (1) includes an axle body (2) in which at least one axle shaft (3) extends. The drive axle (1) has at least one wheel carrier (5), which is arranged on a wheel-side end (4) of the axle body (2), and at least one steering assembly (6). The drive axle (1) is preferably in the form of a rigid axle and the axle body (2) has a receiving structure (7) for accommodating a drive unit (8), and the steering assembly (6) is directly connected to the axle body (2).
    Type: Grant
    Filed: January 22, 2021
    Date of Patent: August 12, 2025
    Assignee: ZF Friedrichshafen AG
    Inventors: Peter Kontermann, Frank Berger
  • Patent number: 12385223
    Abstract: A method of controlling an electric drivetrain of a work machine, the method including determining whether a brake pedal actuation has occurred with an actuation distance greater than an actuation distance threshold value for an actuation duration longer than an actuation duration threshold value. The method further includes determining whether no drive torque maintaining condition exists, based on a determination that the brake pedal actuation occurred with the actuation distance greater than the actuation distance threshold value for the actuation duration longer than the actuation duration threshold value. The method further includes generating a control signal for the electric drivetrain to disable a torque generation by the electric drivetrain based on a determination that no drive torque maintaining condition exists.
    Type: Grant
    Filed: September 21, 2023
    Date of Patent: August 12, 2025
    Assignee: ZF FRIEDRICHSHAFEN AG
    Inventors: Matthias Madlener, Stephan Schinacher, Jürgen Legner, Werner Denk, Andreas Rothmund
  • Patent number: 12384230
    Abstract: An electric drive for a vehicle and a vehicle is having at least one electric machine having a rotor shaft and a planetary transmission for dividing the torque introduced via the rotor shaft to a first output shaft and a second output shaft, wherein for decoupling the rotor shaft at least one switching element is provided relative to the torque transmission between the rotor shaft and an element of the planetary transmission.
    Type: Grant
    Filed: July 14, 2022
    Date of Patent: August 12, 2025
    Assignee: ZF FRIEDRICHSHAFEN AG
    Inventors: Matthias Reisch, Jürgen Wafzig
  • Publication number: 20250251033
    Abstract: A gearbox has an input shaft, an output shaft, three shifting elements, and three planetary gearsets each having a sun shaft, ring gear shaft, and web shaft. The first sun shaft, the second sun shaft, and the input shaft are connected rotationally fixed. Rotationally fixed connections are made between the first ring gear shaft and a stationary component, the first web shaft and the second ring gear shaft, the second web shaft and the third sun shaft, and the third web shaft and the output shaft. Closing the first shifting element connects the third ring gear shaft rotationally fixed to a stationary component. Closing the second shifting element connects in a rotationally fixed manner the first web shaft, the second ring gear shaft, the third web shaft, and the output shaft. Closing the third shifting element connects rotationally fixed two of the three shafts of the third planetary gearset.
    Type: Application
    Filed: January 31, 2025
    Publication date: August 7, 2025
    Applicant: ZF Friedrichshafen AG
    Inventors: Johannes Kaltenbach, Thomas Martin, Fabian Kutter, Johannes Glückler, Kai Bornträger, Stefan Renner
  • Publication number: 20250249739
    Abstract: A vehicle gearbox has an input shaft for an electric machine, an output shaft, an interlocking shifting unit having first and second shifting elements, and a single axially displaceable sliding sleeve. First and second planetary gearsets each have a sun shaft, a ring gear shaft, and a web shaft. The first sun shaft, the second sun shaft, and the drive input shaft are connected rotationally fixed to one another, the first ring gear shaft is connected rotationally fixed to a stationary component; and the first web shaft is connected rotationally fixed to the second ring gear shaft. Closing the first shifting element engages a first gear where the first web shaft, second ring gear shaft, and output shaft connected rotationally fixed to one another. Closing the second shifting element engages a second gear where the second web shaft and output shaft are connected rotationally fixed to one another.
    Type: Application
    Filed: January 31, 2025
    Publication date: August 7, 2025
    Applicant: ZF Friedrichshafen AG
    Inventors: Johannes Kaltenbach, Thomas Martin, Fabian Kutter, Johannes Glückler, Stefan Renner, Kai Bornträger
  • Patent number: 12379027
    Abstract: A gearbox actuator unit (14) is configured to be arranged on a gearbox (10) and includes a housing (22), a control device (24), and an actuator (28, 30). The housing (22) is configured to attach to a gearbox housing (12) and to seal the gearbox housing (12). The control device (24) is electrically connected to the actuator (28, 30) and activates the actuator (28, 30). A pinon of the actuator (28, 30) is configured to actuate a rack of a shift fork (18, 20) of the gearbox (10) and can be connected to the shift fork (18, 20) of the gearbox (10). The control device (24) and the actuator (28, 30) are arranged within the housing (22), with the pinion extending through an opening of the housing. A gearbox (10) with a housing (12) having an opening (44) receives the actuator unit (14), which closes and seals the opening (44).
    Type: Grant
    Filed: August 14, 2023
    Date of Patent: August 5, 2025
    Assignees: ZF Friedrichshafen AG, ZF CV Systems Global GmbH
    Inventors: Stephan Hahn, Holger Kelpe, Michael Günther, Hansjörg Kraft
  • Patent number: 12377823
    Abstract: A brake pedal module for a brake-by-wire braking system of a vehicle is disclosed, with a carrier component for attaching the brake pedal module to the vehicle, a brake pedal mounted pivotably on the carrier component, a feedback unit which, to generate a resistance on actuation of the brake pedal, is mechanically coupled at one end to the brake pedal and at the other end to the carrier module, and a sensor unit for detecting a braking request of a driver and having at least one sensor for detecting an actuation travel. The sensor unit is attached to the carrier component at the side of the brake pedal such that the sensor is arranged on a pivot bearing of the brake pedal.
    Type: Grant
    Filed: February 26, 2024
    Date of Patent: August 5, 2025
    Assignees: ZF Active Safety GmbH, ZF Friedrichshafen AG, ZF Steering Systems Poland Sp. Z.o.o.
    Inventors: Eugen Lanze, Marcus Janson, Karlheinz Schaust, Georg Adams, Johann Welsch, Zul Jalal Arif Ramli, Thomas Kramer, Markus Wenzel, Marek Kozub, Tomasz Rusin
  • Patent number: 12377722
    Abstract: A motor vehicle may include a drive train which has at least one electric machine. The electric machine can be connected or is connected to an electric energy store that can be charged with a charging interface from an external charging device, which electric machine is designed to generate a torque and transmit it to an output of the drive train. A decoupling device may be included, which is designed to mechanically decouple the electric machine from the output, when required, in order to carry out a charging operation in a decoupling state. In the decoupling state, a rotational movement of the rotor of the electric machine into a target charging orientation of the rotor is decoupled from the output of the drive train.
    Type: Grant
    Filed: December 20, 2022
    Date of Patent: August 5, 2025
    Assignee: ZF FRIEDRICHSHAFEN AG
    Inventors: Michael Peterseim, Felix Prauße, Gerhard Müller
  • Patent number: 12379281
    Abstract: A computer-implemented method for identifying a gearwheel (5) that induces vibrations in a transmission includes training a generic AI model with a training data set of a group of reference gearwheels (19). At least one reference profile of a surface (21) of the reference gearwheel (19) and a gearwheel category are provided for each reference gearwheel (19) of the group. The method also includes determining a profile of a surface (11) of a gearwheel (5) and assigning one of the gearwheel categories to the gearwheel (5) on the basis of the determined profile by the trained AI model.
    Type: Grant
    Filed: August 11, 2022
    Date of Patent: August 5, 2025
    Assignee: ZF Friedrichshafen AG
    Inventors: Tobias Martin, Dorian Srelz
  • Patent number: 12377910
    Abstract: A method is disclosed for a steer-by-wire steering system of a motor vehicle, the system having at least one steering function that requests one or more steering angle changes as target steering angles for at least at one vehicle axle. An arbitration unit (AE) weights the steering angle changes as target steering angles (SLw_i) and, taking into account at least one target steering angle (SLw_i), determines an overall target steering angle (G_SLw). Before the overall target steering angle (G_SLw) is set by an actuator of the steer-by-wire steering system, a check is carried out to see whether a gradient of the overall target steering angle (G_SLw) is smaller than or equal to the gradient of the at least one target steering angle (SLw_i).
    Type: Grant
    Filed: June 23, 2021
    Date of Patent: August 5, 2025
    Assignee: ZF Friedrichshafen AG
    Inventors: Dominik Vogt, Ingo Dasch
  • Patent number: 12379025
    Abstract: A method for operating a hydraulic system (1) of a transmission (2) of a motor vehicle i includes ascertaining an actual volumetric flow of oil that is deliverable into a primary hydraulic circuit (10) by at least one hydraulic pump (3), ascertaining a target volumetric flow of oil that is required by the primary hydraulic circuit (10), and ascertaining an excess volumetric flow of oil depending on the actual volumetric flow of oil and the target volumetric flow of oil. The excess volumetric flow of oil is distributed to shift elements of the transmission (2) to be actuated, depending on the hydraulic capacity of these shift elements, and is taken into account when limiting the pressure actuation of the shift elements of the transmission (2) to be actuated.
    Type: Grant
    Filed: June 27, 2023
    Date of Patent: August 5, 2025
    Assignee: ZF Friedrichshafen AG
    Inventors: Mario Hasel, Jakob Mayer, Anshuman Deshpande
  • Publication number: 20250246970
    Abstract: A drive unit is provided for a drive train test bench for testing a drive train of a motor vehicle. The drive unit has a frame, an electric motor with a motor shaft, a clutch, and a drive output shaft, where the electric motor is arranged on the frame and the drive output shaft is mounted to rotate in a bearing of the frame. The motor shaft can be connected rotationally fixed to the drive output shaft by means of the clutch. The drive unit also has a brake having a first friction partner that is a radial outside of the clutch and having a second friction partner that is at least one brake pad. The invention also relates to a corresponding drive train test bench.
    Type: Application
    Filed: April 4, 2023
    Publication date: July 31, 2025
    Applicant: ZF Friedrichshafen AG
    Inventors: Roland Kristl, Stefanie Nodes
  • Patent number: 12372147
    Abstract: A differential cage (10) may accommodate a differential gear. The differential cage (10) has, on a radially outward side, a lateral surface (13), against which a gear wheel of the differential is to rest. The gear wheel is slidable on from a slide-on side and attached on the differential cage. The differential cage (10) includes a radially outwardly projecting flange (14) located axially on a side of the lateral surface (13) remote from the slide-on side. For the differential cage (10) to be welded to different types of gear wheels, a first abutment surface (17) and a second abutment surface (18) are formed on the flange (14) as alternatives for forming a weld joint with the gear wheel. The first abutment surface (17) is formed on the flange (14) facing radially outwards, and the second abutment surface (18) is formed on the flange (14) facing axially towards the slide-on side (15).
    Type: Grant
    Filed: July 11, 2024
    Date of Patent: July 29, 2025
    Assignee: ZF Friedrichshafen AG
    Inventor: Simon Smerczek
  • Publication number: 20250237295
    Abstract: A transmission arrangement for a vehicle drive train includes a planetary wheel set with a planetary carrier with at least one bolt. A first bearing element on the bolt is arranged for rotatably mounting a planetary wheel. The transmission arrangement also has a differential connected to the planetary carrier in a drive-effective manner and configured to transfer a drive power acting on the planetary carrier to a first center shaft and to a second center shaft arranged coaxially thereto, where at least the first center shaft defines a central first channel for the cooling and/or lubricant supply to an interior of the differential, and defining at least one first bore hole on the planetary carrier which extends radially at least in some sections and is configured to guide the coolant and/or lubricant out of the interior of the differential into a second channel of the bolt.
    Type: Application
    Filed: January 16, 2025
    Publication date: July 24, 2025
    Applicant: ZF Friedrichshafen AG
    Inventor: David Rittler
  • Patent number: 12367685
    Abstract: A monitoring system for an interior of a vehicle comprising: a housing having a first side and defining a radar opening and a camera opening at the first side; a radar transceiver disposed within the housing and exposed at least in part at the radar opening; a camera assembly disposed within the housing and having a lens extending at least partially through the camera opening; at least one illumination device arranged on the first side of the housing and at least partially contained within the housing; and a filter cover arranged over at least the radar opening and illumination device on the first side of the housing for filtering visible light.
    Type: Grant
    Filed: January 24, 2023
    Date of Patent: July 22, 2025
    Assignee: ZF Friedrichshafen AG
    Inventor: Anthony Rivas
  • Publication number: 20250229371
    Abstract: Making or undoing an oil press fit between a first and second components at respective fitting surfaces includes pressurizing a channel in the second component to produce or release the oil press fit. Oil is applied by the channel during pressurization from a connection between a first fitting surface on the first component and a second fitting surface on the second component. The channel is defined, at least in sections, by two holes intersecting at a point of intersection, one of which is subdivided by the point of intersection into a first part leading to the second fitting surface and a second part opening to an outer side of the second component. Prior to pressurization, an elastically deformable sealing element is placed at the point of intersection, and it is then pressed into the second part of the hole at the point of intersection in a sealing manner.
    Type: Application
    Filed: January 15, 2025
    Publication date: July 17, 2025
    Applicant: ZF Friedrichshafen AG
    Inventor: Ewald Schmitz
  • Patent number: 12359715
    Abstract: A gearbox arrangement with an oil circuit, including at least one lubrication point incorporated in the oil circuit and at least one direction control valve with at least two switching positions and at least three ports, the at least three ports including a first port, a second port, and a third port. In a first switching position the first port and the third port are connected to each other in an oil-conducting manner and disconnected from the second port. In a second switching position, the first port and the second port are connected to each other in an oil-conducting manner and disconnected from the third port. The lubrication point and the second port are connected to each other in an oil-conducting manner. The lubrication point and the third port are not connected to each other in an oil-conducting manner.
    Type: Grant
    Filed: July 8, 2022
    Date of Patent: July 15, 2025
    Assignee: ZF FRIEDRICHSHAFEN AG
    Inventors: Andy Maes, Bert Verdyck, Stijn Rottiers, Wim De Laet
  • Patent number: 12359699
    Abstract: A drive arrangement for a bicycle includes a pawl freewheel, the pawl freewheel having a first ring, at least two pawls movably mounted on the first ring, and a second ring having a toothing. The at least two pawls are unevenly spaced in the circumferential direction on the first ring. The drive arrangement further includes at least one sensor device configured to detect a deformation of the first ring of the pawl freewheel due to an applied drive force.
    Type: Grant
    Filed: October 17, 2024
    Date of Patent: July 15, 2025
    Assignee: ZF Friedrichshafen AG
    Inventors: Jakob Lauhoff, Kevin Holder, Oliver Löchte, Janik Pagel, Finn Neumann
  • Patent number: 12362745
    Abstract: A method for driving a topological semiconductor switch for a power electronics system, wherein the topological semiconductor switch is split into at least two groups of power semiconductors that are driven temporally separately from one another at a preset switching frequency in such a way that in each case only one of the power semiconductors takes on the total current, wherein the method includes determining of a next switching point, including conducting a pointwise interpolation of the discretized phase current in such a way that the change in the current between two conducting phases is measured and extrapolated, and then, together with the switching frequency, the current rise and the current error are predicted for the next two switching operations, and from this the next switching point with the smallest absolute current deviation is determined.
    Type: Grant
    Filed: August 4, 2023
    Date of Patent: July 15, 2025
    Assignee: ZF Friedrichshafen AG
    Inventor: Fabian Hohmann
  • Patent number: 12358364
    Abstract: A vehicle transmission includes a transmission housing defining an oil sump space and a hybrid space, with the hybrid space being arranged vertically above the oil sump space. The transmission further includes a first oil guide shell and a second oil guide shell each fixed to the transmission housing. Additionally, the transmission includes rotating components installable in a portion of the hybrid space between the first oil guide shell and the second oil guide shell in an axial direction, where the rotating components includes at least one electric machine, a damper, and a torsional shock absorber. Two contactless gap seals are formed by one of the oil guide shells and at least one of the rotating components such that oil entry from the oil sump into the portion of the hybrid space is delimited axially by the oil guide shells and radially by the gap seals.
    Type: Grant
    Filed: January 31, 2023
    Date of Patent: July 15, 2025
    Assignee: ZF Friedrichshafen AG
    Inventors: Thomas Riedisser, Wolfgang Schmid, Leschek Debernitz, Thomas Dirheimer, Manuel Schwaerzler, Florian Pöhnlein, Daniel Haase, Peter Reinders, Martin Kibler