公开(公告)号：US20240300497A1

公开(公告)日：2024-09-12

申请号：US18573639

申请日：2022-06-21

Applicant: ZF Friedrichshafen AG

Inventor： Mario Steinborn ,  Maik Würthner ,  Thea Schlueter ,  Frieder Norrenberg ,  Martin Fajfr

IPC: F16H61/04 ,  F16H59/18 ,  F16H59/42 ,  F16H59/44 ,  F16H59/52 ,  F16H59/54 ,  F16H59/66 ,  F16H61/16 ,  F16H61/70

CPC classification number: B60W30/19 ,  B60W10/02 ,  B60W10/04 ,  B60W10/111 ,  F16H59/18 ,  F16H59/42 ,  F16H59/44 ,  F16H59/54 ,  F16H61/0403 ,  F16H61/16 ,  F16H61/70 ,  B60W2510/0638 ,  B60W2510/104 ,  B60W2710/021 ,  B60W2710/1005 ,  F16H59/52 ,  F16H2059/663 ,  F16H2061/0411 ,  F16H2061/161 ,  F16H2200/0039

Abstract: A method for operating a drive train of a motor vehicle, where the drive train includes a drive aggregate, a group transmission connected between the drive aggregate and a drive output, and a separating cutch connected between the drive aggregate and the group transmission. If a speed is lower than a limit value, the separating clutch is opened and for transmission preselection one or all the other sub-transmission(s) is/are changed to a friction-force-locking condition. The separating clutch is then at least partially closed and the drive aggregate is brought to a defined rotation speed. When a friction-force-locking group transmission is required, it is checked whether a starting gearshift or a driver-desired shift for the group transmission is called for and the target rotation speed of the drive aggregate is checked. Depending on the results, the sub-transmission can be synchronized by a transmission brake or by the drive aggregate.

公开(公告)号：US20240300326A1

公开(公告)日：2024-09-12

申请号：US18440104

申请日：2024-02-13

Applicant: Dana Motion Systems Italia S.R.L.

Inventor： Riccardo MORSELLI

IPC: B60K17/356 ,  B60K1/02 ,  B60K17/02 ,  B60K17/08 ,  B60K17/16 ,  B60K17/28 ,  B60K25/00 ,  F16H37/08 ,  F16H59/42 ,  F16H61/04 ,  F16H61/682 ,  F16H63/50

CPC classification number: B60K17/356 ,  B60K1/02 ,  B60K17/02 ,  B60K17/08 ,  B60K17/16 ,  B60K17/28 ,  B60K25/00 ,  F16H37/0806 ,  F16H37/0813 ,  F16H59/42 ,  F16H61/0403 ,  F16H61/682 ,  F16H63/502 ,  B60K2025/005 ,  F16H2061/0422 ,  F16H2200/0004 ,  F16H2200/0017 ,  F16H2200/0021 ,  F16H2200/0034

Abstract: Systems and methods are provided for electrifying a drivetrain of a vehicle. In one example, a gearbox for a vehicle a first gear coupled to a first input shaft configured to be driven by a first electric motor, a second gear configured to mesh with the first gear, and a third gear configured to mesh with the second gear and coupled to a third shaft configured to drive a first axle of the vehicle and connectable to a second axle of the vehicle. The gearbox further includes a fourth gear coupled to the first input shaft, a fifth gear coupled to a lay shaft coupled to the second gear, a sixth gear coupled to a second input shaft, and a seventh gear coupled to a power takeoff shaft configured to drive one or more power takeoff units, the second input shaft configured to be driven by a second electric motor.

公开(公告)号：US20240288067A1

公开(公告)日：2024-08-29

申请号：US18565158

申请日：2022-05-31

Applicant: Punch Powertrain N.V.

Inventor： Cláudio Filipe Semedo BRITO ,  Pandiaraja KUMAR

IPC: F16H61/12 ,  F16H59/36 ,  F16H59/40 ,  F16H59/42 ,  F16H59/62 ,  F16H59/64 ,  F16H59/68 ,  F16H59/72 ,  F16H61/30 ,  G01K13/02 ,  G01M13/022

CPC classification number: F16H61/12 ,  F16H59/40 ,  F16H59/42 ,  F16H59/62 ,  F16H59/64 ,  F16H59/72 ,  F16H61/30 ,  G01K13/026 ,  G01M13/022 ,  F16H2059/366 ,  F16H2059/683 ,  F16H2061/1284

Abstract: Method for determining a hydraulic fluid parameter of a hydraulic clutch for a transmission of a vehicle, comprising receiving from a sensor a measurement of the hydraulic fluid parameter; receiving a further parameter different from the hydraulic fluid parameter; estimating the hydraulic fluid parameter based on at least the obtained further parameter; and comparing the received sensed hydraulic fluid parameter with the estimated hydraulic fluid parameter.

公开(公告)号：US20240288065A1

公开(公告)日：2024-08-29

申请号：US18042687

申请日：2022-12-14

Applicant: ZHEJIANG SIEKON TRANSMISSION TECHNOLOGY CO., LTD.

Inventor： Wenyong YU

IPC: F16H61/04 ,  F16H37/08 ,  F16H59/42 ,  F16H59/68 ,  F16H61/32 ,  F16H63/30 ,  F16H63/32

CPC classification number: F16H61/0403 ,  F16H37/0813 ,  F16H59/42 ,  F16H59/68 ,  F16H61/32 ,  F16H63/304 ,  F16H63/32 ,  F16H2061/0422 ,  F16H2061/0481 ,  F16H2061/0488 ,  F16H2061/326 ,  F16H2063/3056

Abstract: A battery electric vehicle transmission with a disengaging function includes an input shaft, an output shaft, and an intermediate shaft. An input shaft gear is arranged around the input shaft and the input shaft is engaged with an intermediate gear on the intermediate shaft via the input shaft gear, the intermediate gear is engaged with an output gear on the output shaft, the input shaft is connected with an auxiliary drive motor, and the output shaft is connected with vehicle wheels. The transmission further includes a synchronizer, and an engagement sleeve of the synchronizer is driven by a shift mechanism to switch between an engagement position and a disengagement position of the input shaft gear. The shift mechanism includes a BLDC motor, a shift gear and a shift fork, the shift gear is driven by the BLDC motor to drive the shift fork to move linearly.

公开(公告)号：US20240183442A1

公开(公告)日：2024-06-06

申请号：US18523075

申请日：2023-11-29

Applicant: Electric Propulsion Technologies, LLC

Inventor： Douglas D. TURNER ,  John OGGER ,  Tomaz KOMPARA

IPC: F16H61/04 ,  F16H59/40 ,  F16H59/42 ,  F16H59/46 ,  F16H59/68

CPC classification number: F16H61/0403 ,  F16H59/40 ,  F16H59/42 ,  F16H59/46 ,  F16H59/68 ,  F16H2061/047 ,  F16H2061/0474

Abstract: A power transferring gearset includes a gear synchronization controller disposed in communication with a drive gear, a driven gear and a shifting mechanism. In response to detecting a gear engagement command, the gear synchronization controller is configured to determine a rotational speed delta between a rotational speed of the drive gear and a rotational speed of the driven gear and compare the rotational speed delta to a pre-determined speed delta. In response to determining that the rotational speed delta is less than the predetermined speed delta, the gear synchronization controller applies a rotational shutter function to the drive gear to apply a series of clockwise and counterclockwise rotational cycles to the drive gear simultaneously during the axial movement of the shifting mechanism for preventing a blocked condition of the power transferring gearset while establishing the meshed relationship between the shifting and gear teeth.

公开(公告)号：US20230406319A1

公开(公告)日：2023-12-21

申请号：US18044718

申请日：2021-09-17

Applicant: VOLVO TRUCK CORPORATION

Inventor： Mattias ANDREASSON ,  Erik LAURI

IPC: B60W30/19 ,  B60W10/10 ,  B60W10/08 ,  F16H61/04 ,  F16H59/42 ,  B60K1/02 ,  B60W10/02 ,  F16H59/14

CPC classification number: B60W30/19 ,  B60W10/10 ,  B60W10/08 ,  F16H61/0403 ,  F16H59/42 ,  B60K1/02 ,  F16H2057/02043 ,  F16H59/14 ,  B60W2510/1015 ,  B60W2710/081 ,  B60W2710/083 ,  B60W2710/1011 ,  B60W10/02

Abstract: The present invention relates to a controlling apparatus for a powertrain of an electric vehicle, wherein the electric vehicle comprises a gearbox having an input shaft, a first electric machine and a second electric machine being coupled to the input shaft of the gearbox. The controlling apparatus is configured to control the operation of the first and second electric machines by the steps of:



changing the speed of the first and second electric machines to reach a target speed of the input shaft;
determining that the speed of the input shaft is within a target range of the target speed;
setting one of the first and second electric machines in a first control mode, the first control mode being speed control to adjust for changes so that the target speed of the input shaft can be kept when reached, and setting the other one of the first and second electric machines in a second control mode being different to the first control mode, in response of determining that the speed of the input shaft is within the target range.

公开(公告)号：US11543024B1

公开(公告)日：2023-01-03

申请号：US17654183

申请日：2022-03-09

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Bryan John Williams ,  Greg Perantoni ,  Matthew Pruski

IPC: F16H61/02 ,  F16H59/42 ,  F16H59/72 ,  F16H61/12 ,  F16H59/44 ,  F16H59/70

Abstract: Systems and methods are provided for controlling a transmission associated with a vehicle. The method includes receiving a neutral range selection for the transmission, and receiving a temperature and a pressure of a lubricant associated with the transmission. The method includes receiving a speed of an input shaft associated with the transmission, and determining, by a processor, based on the temperature and the speed of the input shaft, a pressure threshold value for the lubricant. The method includes outputting, by the processor, one or more control signals to command the transmission to a one clutch neutral state in which one clutch of a plurality of clutches associated with the transmission is engaged based on a comparison of the pressure threshold value to the pressure of the lubricant.

公开(公告)号：US11421781B2

公开(公告)日：2022-08-23

申请号：US17359738

申请日：2021-06-28

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Hideaki Bunazawa ,  Atsushi Tabata ,  Koichi Okuda ,  Ken Imamura ,  Kota Fujii ,  Keita Sasaki

IPC: F16H61/30 ,  F16H59/42 ,  F16H59/14 ,  F16H61/08 ,  F16H59/18

Abstract: An oil pressure learning method of an automatic transmission includes acquiring a state of a vehicle in a state where relational regulation data is stored, supplying oil to the automatic transmission such that the value of the oil pressure is set to an oil pressure command value, calculating, as a specific variable, a variable representing an amount in which a detected input rotation speed exceeds a target input rotation speed, or the like, calculating a reward in a manner in which it has a larger value when the specific variable satisfies a criterion than when it does not satisfy the criterion, updating the relational regulation data by inputting, to an update mapping, the reward and the oil pressure command value, and calculating a torque variable having a value that is increased as an amount of change in an input torque is increased.

公开(公告)号：US11371603B2

公开(公告)日：2022-06-28

申请号：US16901587

申请日：2020-06-15

Applicant: Shimano Inc.

Inventor： Satoshi Shahana ,  Mitsuhiko Kawasaki

IPC: F16H61/02 ,  F16H59/14 ,  F16H59/44 ,  F16H59/42 ,  F16H59/48 ,  F16H59/66 ,  B62M25/08 ,  B62J45/20 ,  F16H59/64

Abstract: A control device and a transmission system are provided that allow for comfortable traveling with a human-powered vehicle. The control device includes an electronic controller configured to control a transmission to shift a transmission ratio of a human-powered vehicle in accordance with a first shifting condition set based on a first reference value. The electronic controller is configured to shift the transmission ratio of the human-powered vehicle regardless of the first shifting condition upon determining a second shifting condition set based on travel information related to traveling of the human-powered vehicle is satisfied.

公开(公告)号：US20220186830A1

公开(公告)日：2022-06-16

申请号：US17684507

申请日：2022-03-02

Applicant: UNIVERSITY OF MARYLAND, BALTIMORE COUNTY

Inventor： Weidong ZHU ,  Xuefeng WANG ,  Gang LI

IPC: F16H61/664 ,  F16H59/40 ,  F16H59/42 ,  F16H3/76 ,  F16H59/70

Abstract: A nonlinear closed-loop control combined with an integral time-delay feedback control is disclosed to adjust a speed ratio of an infinitely variable transmission (IVT) system. A speed ratio control for an IVT system involves a forward speed controller and a crank length controller for different speed ranges. The time-delay control is designed to reduce speed fluctuations of the output speed of an IVT with an accurate speed ratio. The speed ratio of an IVT with the disclosed control strategy can achieve an excellent tracking response for the desired constant output speed and reduce speed fluctuations of the output speed of an IVT by the time-delay feedback control.