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公开(公告)号：US20240229928A9
公开(公告)日：2024-07-11
申请号：US18049118
申请日：2022-10-24
Applicant: Deere & Company
Inventor： JOHN P. KRUCKEBERG , MARK A. HERMAN , DAVID L. SPRINKLE , HARRY K. VOELP, IV , TEJAL SARDA , Julie B. Kuyath , STEVEN P. FORSSBERG , CHAD E. SCHONEMAN
CPC classification number: F16H61/08 , F16H61/0403 , F16H2061/0244
Abstract: A hydrostatic transmission control system includes a controller that monitors inputs for shifting a transmission of a tractor to a different range gear; determines if an engine on the tractor is operating in a desired and acceptable shift range based on a sensed speed and a load of the engine, and determines if a hydrostatic transmission on the tractor is operating in a desired and acceptable shift range based on a sensed load and a speed of the hydrostatic transmission. If the controller determines the engine and the hydrostatic transmission are operating in the desired and acceptable shift range, the controller commands an oncoming clutch to ramp up and an off going clutch to ramp down, and synchronizes speeds of the engine and the hydrostatic transmission.
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公开(公告)号：US12025220B2
公开(公告)日：2024-07-02
申请号：US18365603
申请日：2023-08-04
Applicant: SUZUKI MOTOR CORPORATION
Inventor： Shoji Yanagida
CPC classification number: F16H63/18 , F16H61/04 , F16H63/3013 , F16H2059/0234 , F16H2059/147 , F16H2063/3079
Abstract: A shift device that causes a transmission device to shift in response to a shift operation of a shift pedal includes a shift shaft configured to rotate in response to the shift operation of the shift pedal, a shift cam configured to rotate in a manner of being capable of changing a coupling state of a shift gear of the transmission device, a drive plate configured to move the shift cam in response to the rotation of the shift shaft, and a lost motion mechanism interposed between the shift shaft and the drive plate. The lost motion mechanism is attached to one end portion of the shift shaft and absorbs the rotation of the shift shaft to delay power transmission to the drive plate.
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13.发明授权公开(公告)号：US12024859B2
公开(公告)日：2024-07-02
申请号：US17440107
申请日：2020-03-17
Applicant: ZF Friedrichshafen AG
Inventor： Migen Bebeti , Rico Glöckner
CPC classification number: E02F9/207 , E02F9/2079 , F16H61/04 , F16H2057/02043 , F16H61/0006 , F16H2061/0422 , F16H2061/0433
Abstract: The disclosure relates to a method for operating a drivetrain for a work machine, wherein a first electric motor drives a work drive of the work machine via a first transmission arrangement, wherein a second electric motor drives a traction drive of the work machine via a second transmission arrangement, and wherein, during a shift process of the second transmission arrangement from a relatively low gear ratio stage to a relatively high gear ratio stage, the rotational speed of the second electric motor is reduced. The method according to the disclosure is distinguished by the fact that, during the shift process, a driving connection is produced between the first electric motor and the second transmission arrangement by a first clutch, such that, during the shift process, the first electric motor drives the traction drive. The disclosure furthermore relates to a corresponding drivetrain and to a work machine.
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公开(公告)号：US20240200652A1
公开(公告)日：2024-06-20
申请号：US18545135
申请日：2023-12-19
Applicant: ZF Friedrichshafen AG
Inventor： Ulf Lang , Jürgen Blaser
CPC classification number: F16H61/0403 , F16H47/08 , F16H59/40 , F16H59/54 , F16H59/72 , F16H61/682 , F16H2059/6823 , F16H2061/0474
Abstract: A transmission is between a drive aggregate and a drive output of a vehicle drivetrain and includes a hydrodynamic starting element and a powershiftable main transmission having a plurality of forward gears and at least one reversing gear. The main transmission has frictional shifting elements, where in each gear a first number of shifting elements are closed and a second number of shifting elements are open. A downstream range group is connected downstream from the main transmission and has at least one interlocking shifting element that can be shifted between first a second driving ranges. With the drive aggregate running, the motor vehicle at a standstill or nearly so, and the main transmission in neutral, a shift request to change the downstream range group is received. The shifting elements of a reversing gear are at least partially closed, and the driving range of the downstream range group is then changed.
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公开(公告)号：US12013028B2
公开(公告)日：2024-06-18
申请号：US18554728
申请日：2022-05-13
Applicant: KOMATSU LTD.
Inventor： Manabu Nakamura
CPC classification number: F16H59/16 , F16H61/0437 , F16H59/46
Abstract: A transmission system includes a transmission, first and second composite sensors, and a controller. The transmission has a clutch switchable between an engaged state and a disengaged state, a first shaft disposed on an input side of the clutch, and a second shaft disposed on an output side of the clutch. The first and second composite sensors detect rotation speeds and rotation phases of the first and second shafts, respectively. The controller acquires a load torque applied to the transmission. When the clutch is switched from the disengaged state to the engaged state, the controller derives a phase difference between the rotation phase of the first shaft detected by the first composite sensor and the rotation phase of the second shaft detected by the second composite sensor based on the time when the clutch has stopped slipping. The controller acquires the load torque based on the derived phase difference.
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Patent Agency Ranking
16.发明公开公开(公告)号：US20240167563A1
公开(公告)日：2024-05-23
申请号：US18512674
申请日：2023-11-17
Applicant: ZF Friedrichshafen AG
Inventor： Wilhelm Moser , Alain Tierry Chamaken Kamde
CPC classification number: F16H61/04 , B60L15/20 , F16H59/68 , F16H63/04 , F16H63/304 , F16H63/502 , F16H2059/6807 , F16H2061/047
Abstract: Disclosed is a method for operating an interlocking shifting element of a transmission of a vehicle, the interlocking shifting element having shifting element halves which can be moved relative to one another when opening and closing the interlocking shifting element. An electric actuator is arranged to about the relative movement between the shifting element halves when the interlocking shifting element is opened and/or closed. After recognizing a tooth-on-tooth position in the interlocking shifting element, a target torque to be applied at the transmission input is determined as a function of an electric current strength through the electric actuator of the interlocking shifting element, where the target torque is sufficient to resolve the tooth-on-tooth position in the interlocking shifting element.
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公开(公告)号：US11976722B2
公开(公告)日：2024-05-07
申请号：US17877215
申请日：2022-07-29
Applicant: ArvinMeritor Technology, LLC
Inventor： Edvin Godo , Banuchandar Muthukumar
CPC classification number: F16H61/0403 , F16H61/12 , F16H61/2807 , F16H63/502 , F16H2061/0422 , F16H2061/1232
Abstract: A method of controlling an axle assembly. The method includes executing a speed synchronization mode and operating a clutch actuator to shift a clutch from a neutral position toward an engaged position. The method may also include executing a low torque synchronization mode when the clutch cannot be shifted from a neutral position to an engaged position within a first predetermined period of time.
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公开(公告)号：US20240133464A1
公开(公告)日：2024-04-25
申请号：US18049118
申请日：2022-10-23
Applicant: Deere & Company
Inventor： JOHN P. KRUCKEBERG , MARK A. HERMAN , DAVID L. SPRINKLE , HARRY K. VOELP, IV , TEJAL SARDA , Julie B. Kuyath , STEVEN P. FORSSBERG , CHAD E. SCHONEMAN
CPC classification number: F16H61/08 , F16H61/0403 , F16H2061/0244
Abstract: A hydrostatic transmission control system includes a controller that monitors inputs for shifting a transmission of a tractor to a different range gear; determines if an engine on the tractor is operating in a desired and acceptable shift range based on a sensed speed and a load of the engine, and determines if a hydrostatic transmission on the tractor is operating in a desired and acceptable shift range based on a sensed load and a speed of the hydrostatic transmission. If the controller determines the engine and the hydrostatic transmission are operating in the desired and acceptable shift range, the controller commands an oncoming clutch to ramp up and an off going clutch to ramp down, and synchronizes speeds of the engine and the hydrostatic transmission.
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19.发明公开公开(公告)号：US20240125384A1
公开(公告)日：2024-04-18
申请号：US18278115
申请日：2022-02-03
Applicant: MEGA-Line RACING ELECTRONIC GmbH
Inventor： Christian SCHMIDT , Norbert FUCHS
CPC classification number: F16H61/0403 , F16H61/32 , F16H2061/0422 , F16H2061/0474 , F16H2200/0034
Abstract: Disclosed is a torque-converting or speed-converting variable-speed transmission with at least two gear ratios. Each gear ratios is assigned at least one changeable gear pair. Shifting elements act on sliding sleeves (24) connected to the gear pairs to change these gear pairs. The shifting elements are in engagement with a shift drum (10), which is moveable into defined angular positions and rotatable between these angular positions. The shift drum (10) has an electric-motor direct drive (12), which can rotate it and bring it into the particular defined angular positions. A method used to control such a torque-converting or speed-converting variable-speed transmission is also contemplated.
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公开(公告)号：US20240093778A1
公开(公告)日：2024-03-21
申请号：US18524256
申请日：2023-11-30
Applicant: CNH Industrial America LLC
Inventor： Hamidreza Mahabadipour , Haibo Guo
CPC classification number: F16H61/0009 , F16H61/0025 , F16H61/04 , F16L55/05
Abstract: A hydraulic damping rail includes a primary rail wall defining a primary rail volume, a rail inlet structured to provide communication of hydraulic fluid between a hydraulic pump and the primary rail volume, and a plurality of rail outlets configured to provide communication between the primary rail volume and a plurality of clutch valves. A spacing between adjacent pairs of rail outlets of the plurality of rail outlets is variable.
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