公开(公告)号：US12209658B2

公开(公告)日：2025-01-28

申请号：US18146734

申请日：2022-12-27

Applicant: Dana Belgium N.V.

Inventor： Pauwel Coenen ,  Joachim Van Dingenen ,  Christophe De Buyser ,  Kurt Cattoor ,  Bert Hannon

IPC: F16H61/688 ,  F16H3/00 ,  F16H61/04

Abstract: Systems and methods for an electric powertrain. The method, in one example, includes responsive to receiving a shift command, engaging a second friction clutch while disengaging a first friction clutch to transition from a first operating gear ratio to a second operating gear ratio. The method, further includes during the gear ratio transition, operating a traction motor under a peak condition, the peak condition denotes a condition where the motor speed is greater than a maximum continuous torque curve of the motor.

公开(公告)号：US12203536B1

公开(公告)日：2025-01-21

申请号：US18414934

申请日：2024-01-17

Applicant: HYUNDAI MOTOR COMPANY ,  KIA CORPORATION

Inventor： Woo Hyun Lim ,  Ki Seok Kim ,  Kyoung Chul Min ,  Jong Sool Park ,  Dae In Lee ,  Yeo Hae Lee

IPC: F16H1/28 ,  F16H3/64 ,  F16H3/78 ,  F16H29/16 ,  F16H57/00 ,  F16H57/08 ,  F16H61/04

Abstract: A gear train includes at least four gears sequentially engaged, multiple links configured to support the rotation shafts of the gears, and pins configured to fix the rotation shafts of the gears to the link, wherein the pins are installed such that, among the rotation shafts of the gears, two non-adjacent rotation shafts have both ends fixed to the link and one of adjacent rotation shafts has only one end fixed to the link.

公开(公告)号：US20250003489A1

公开(公告)日：2025-01-02

申请号：US18343352

申请日：2023-06-28

Applicant: Deere & Company

Inventor： Caleb C. Lenon ,  Randall L. Long

IPC: F16H61/70 ,  B60K17/354 ,  B60K17/356 ,  F16H59/44 ,  F16H59/52 ,  F16H61/04

Abstract: A work vehicle has two transaxles carried by a chassis each having wheel end units rotatable to drive ground-engaging members about wheel axes and having electric machines powering transmission configured to effect multiple gear ratios. The electric transaxles are operationally mechanically uncoupled. One or more sensors detect speed, heading, and loading characteristics of the work vehicle. A controller, having memory and processing architecture, is configured to process control to: receive from the one or more sensors input of the speed, heading, and loading characteristics of the work vehicle. The controller determines a shift pair sequence for shifting the first transmission and the second transmission based on the received input of the speed, heading, and loading characteristics of the work vehicle. The shift pair sequence defines a shift time (tS1) for shifting the first transmission and a shift time (tS2) for shifting the second transmission in which the shift time tS1 is the same or different than the shift time tS2. The controller generates a first shift command to shift the first transmission at the shift time tS1 while the second electric transaxle drives the work vehicle and generate a second shift command to shift the second transmission at the shift time tS2 while the first electric transaxle drives the work vehicle.

公开(公告)号：US12169015B2

公开(公告)日：2024-12-17

申请号：US18358759

申请日：2023-07-25

Applicant: DANA ITALIA S.R.L.

Inventor： Lorenzo Dalla Palma ,  Fabio Gunsch ,  Mario Gelmini ,  Giovanni Profumo

IPC: F16H61/66 ,  F16H37/08 ,  F16H47/04 ,  F16H61/04 ,  F16H61/40 ,  F16H61/438 ,  F16H61/456 ,  F16H61/46 ,  F16H61/47 ,  F16H61/472 ,  F16H61/38 ,  F16H61/50

Abstract: Methods and systems for a hydromechanical transmission are provided herein. In one example, the transmission operating method includes asynchronously shifting between a first pair of drive ranges in the transmission via operation of two clutches and a variable displacement hydraulic pump in a hydrostatic assembly. In the method, asynchronously shifting between the two drive ranges includes a plurality of phases that include a swiveling phase where a speed of the hydrostatic assembly is inverted.

公开(公告)号：US20240360901A1

公开(公告)日：2024-10-31

申请号：US18635244

申请日：2024-04-15

Applicant: Mazda Motor Corporation

Inventor： Yuki Tsuchitori ,  Manabu Sasahara

IPC: F16H61/04 ,  F16H61/682

CPC classification number: F16H61/0403 ,  F16H61/682 ,  F16H2200/006 ,  F16H2200/2012 ,  F16H2200/2015 ,  F16H2200/2023 ,  F16H2200/2043 ,  F16H2306/44

Abstract: A control system of a vehicle includes an automatic transmission provided with a plurality of friction engagement elements changeable between engaged and disengaged states, and configured to form a plurality of gear stages by changing a combination of three friction engagement elements to be selectively engaged among the friction engagement elements, and a controller which controls the change between the engaged and disengaged states of each friction engagement element. The controller performs a neutral control in which, for setting the automatic transmission to a neutral state in which a driving force of a drive source is not transmitted to driving wheels, while two of the three friction engagement elements engaged when forming each gear stage are kept engaged, the remaining one of the three friction engagement element is disengaged. The two friction engagement elements engaged during the neutral control are common in at least two adjacent gear stages.

公开(公告)号：US12129923B1

公开(公告)日：2024-10-29

申请号：US18635244

申请日：2024-04-15

Applicant: Mazda Motor Corporation

Inventor： Yuki Tsuchitori ,  Manabu Sasahara

IPC: F16H61/04 ,  F16H61/682

CPC classification number: F16H61/0403 ,  F16H61/682 ,  F16H2200/006 ,  F16H2200/2012 ,  F16H2200/2015 ,  F16H2200/2023 ,  F16H2200/2043 ,  F16H2306/44

Abstract: A control system of a vehicle includes an automatic transmission provided with a plurality of friction engagement elements changeable between engaged and disengaged states, and configured to form a plurality of gear stages by changing a combination of three friction engagement elements to be selectively engaged among the friction engagement elements, and a controller which controls the change between the engaged and disengaged states of each friction engagement element. The controller performs a neutral control in which, for setting the automatic transmission to a neutral state in which a driving force of a drive source is not transmitted to driving wheels, while two of the three friction engagement elements engaged when forming each gear stage are kept engaged, the remaining one of the three friction engagement element is disengaged. The two friction engagement elements engaged during the neutral control are common in at least two adjacent gear stages.

公开(公告)号：US20240317235A1

公开(公告)日：2024-09-26

申请号：US18187308

申请日：2023-03-21

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Chunhao J. Lee ,  Dongxu LI ,  Farzad Samie ,  Paul Guillermo Otanez ,  Su-Yang Shieh

IPC: B60W30/19 ,  B60W10/08 ,  B60W10/115 ,  F16H61/04

CPC classification number: B60W30/19 ,  B60W10/08 ,  B60W10/115 ,  F16H61/0403 ,  B60W2510/10 ,  B60W2710/081 ,  B60W2710/1005 ,  F16H2061/0422

Abstract: A system for controlling a transmission state of a vehicle includes a controller connected to a first drive system and a first transmission including a gear system, a first clutch and a second clutch. The controller is configured to receive a request to change from an initial transmission state to a target transmission state when a propulsion torque is applied to the vehicle. The controller is configured to distribute the propulsion torque such that all of the propulsion torque is applied by a second drive system and the first drive system does not provide any propulsion torque to the vehicle, fully release an off-going clutch from the gear system, control a motor speed based on a rotational speed relation of the target transmission state to reduce a slip speed of the on-going clutch, and fully engage an on-coming clutch to put the first drive system in the target transmission state.

公开(公告)号：US12060934B1

公开(公告)日：2024-08-13

申请号：US18498299

申请日：2023-10-31

Applicant: FCA US LLC

Inventor： William R Mayhew

IPC: F16H61/04 ,  F16H61/12

CPC classification number: F16H61/0403 ,  F16H2061/0407 ,  F16H2061/0422 ,  F16H2061/124 ,  F16H2306/48

Abstract: Control systems and methods for a vehicle transmission initiate a shift operation of the transmission and, during the transmission shift operation, determine an acceleration of a torque generating system output shaft based on its measured rotational speed and determine an acceleration of the transmission output shaft based on its measured rotational speed, identify an error source using a transmission model that maps differences between the determined and target accelerations back to torque generating system error and/or transmission clutch torque error and, based on the identified error source, adjust the actuation of at least some of the plurality of clutches to compensate for the torque generating system error and/or transmission clutch torque error to mitigate or eliminate noise/vibration/harshness (NVH) caused by the transmission shift operation.

公开(公告)号：US12049957B2

公开(公告)日：2024-07-30

申请号：US17616777

申请日：2020-03-19

Applicant: IKEYA FORMULA CO., LTD.

Inventor： Shinji Ikeya

IPC: F16H63/30 ,  F16H3/08 ,  F16H61/04

CPC classification number: F16H63/30 ,  F16H3/08 ,  F16H61/04 ,  F16H2003/0811 ,  F16H2003/0822 ,  F16H2061/0474 ,  F16H2063/3093 ,  F16H2200/0052

Abstract: A transmission comprises a moving mechanism to generate axial force to move the one rotary member and releases the axial force according to generation of coasting torque, an urging mechanism to urge the one rotary member with force being poorer than the axial force being generated by the moving mechanism so that the meshing teeth mesh, the contact body of the urging mechanism arranged in a supporting hole formed on the torque transmission member in a radial direction, and an urging and converting part provided to receive the contact body being urged in the radial direction by the urging functional part and convert a direction of the urging to the axial direction to urge the axial movement of the one rotary member.

公开(公告)号：US20240229930A1

公开(公告)日：2024-07-11

申请号：US18288279

申请日：2022-05-30

Applicant: Bayerische Motoren Werke Aktiengesellschaft

Inventor： Klaus ZELGER

IPC: F16H63/34 ,  B60K7/00 ,  B60K17/02 ,  B60K17/04 ,  F16H61/04

CPC classification number: F16H63/3416 ,  B60K7/0007 ,  B60K17/02 ,  B60K17/043 ,  F16H61/0403 ,  B60K2007/0061 ,  F16H2061/0488

Abstract: A motor vehicle includes an electric drive machine and a coupling mechanism for switching between a coupling position, in which the electric drive machine is coupled to a drive wheel of the motor vehicle, and a decoupling position in which the electric drive machine is decoupled from the drive wheel. The motor vehicle further includes a parking lock device which has a parking lock element movable between a parking lock position, in which the parking lock element blocks a rotation of the drive wheel, and an unlocking position in which the parking lock element releases rotation of the drive wheel. The motor vehicle also includes an actuation device to actuate a clutch of the coupling mechanism, which clutch has a switching element for switching between the coupling position and the decoupling position, and moving the parking lock element between the parking lock position and the unlocking position.