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公开(公告)号：US11629777B2
公开(公告)日：2023-04-18
申请号：US16807787
申请日：2020-03-03
申请人： DEERE & COMPANY
发明人： David Müller , Rainer Gugel , Frank Buhrke , Michael Schumann
摘要： A powershift transmission for an agricultural machine includes a transmission housing, an input shaft unit and an output shaft, wherein the input shaft unit and the output shaft extend at least in sections within the transmission housing. An auxiliary shaft is arranged parallel to but offset between the input shaft unit and the output shaft. The input shaft unit and the auxiliary shaft are connected to one another via a front-mounted range unit, and the auxiliary shaft and the output shaft are connected to one another via a rear-mounted range unit. The front-mounted and rear mounted range units each includes at least two gear wheel pairs, the at least two gear wheel pairs being individually coupled or decoupled. The auxiliary shaft unit includes a first auxiliary shaft and a second auxiliary shaft, where the first and second auxiliary shafts are coupled to one another via a reduction gear unit.
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公开(公告)号：US11628715B2
公开(公告)日：2023-04-18
申请号：US17339266
申请日：2021-06-04
发明人： Ah Ram Lee , Kwon Su Shin , Jae Joon Lee , Jong Sool Park , Jin Young Hwang
摘要： A shift control method for an automated manual transmission (AMT) of a vehicle includes: when a shift operation is started, a torque of the second motor is increased so that a change in an output torque of the output shaft due to a change in a torque of the first motor is minimized while the torque of the first motor is being decreased. According to the shift control method, the increased torque of the second motor is maintained to be constant while controlling transmission release, speed synchronization, and transmission coupling. After the control over the transmission coupling is completed, the torque of the second motor is controlled so that the output torque of the output shaft follows a predetermined target torque while the torque of the first motor is controlled to be increased.
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公开(公告)号：US20230065011A1
公开(公告)日：2023-03-02
申请号：US17938298
申请日：2022-10-05
申请人： DANA ITALIA S.R.L.
摘要： Methods and systems for a hydromechanical transmission are provided herein. In one example, the transmission system includes a hydrostatic assembly and a mechanical assembly coupled in parallel to a first and second planetary gear sets. The transmission system further includes a plurality of clutches designed to shift between two drive ranges in a set of drive ranges that includes a reverse drive range and two forward drive ranges to adjust the input to output speed ratio of the transmission.
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公开(公告)号：US11584358B2
公开(公告)日：2023-02-21
申请号：US16846812
申请日：2020-04-13
发明人： Muddassar Piracha
IPC分类号： B60W30/19 , B60W20/30 , B60K6/26 , B60K6/28 , B60K6/36 , B60K6/38 , B60W10/08 , B60W10/11 , F16H59/18 , F16H59/38 , F16H59/70 , F16H61/04 , F16H61/688 , F16H59/14 , F16H59/68
摘要： A method for performing rotational speed synchronisation of a first transmission component having a first initial rotational speed with a second transmission component having a second initial rotational speed, so that they rotate with the same final rotational speed during a gear switch from an initial driving gear to a final driving gear in a stepped gear transmission for a hybrid electric or electric drive train having an electric traction motor. The method including calculating a total frictional work resulting from performing the total rotational speed synchronisation by means of a mechanical synchroniser of the stepped gear transmission only, and if the calculated total frictional work exceeds a maximal frictional work of the mechanical synchroniser, performing the rotational speed synchronisation by means of both the electric traction motor and the mechanical synchroniser.
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公开(公告)号：US11555532B2
公开(公告)日：2023-01-17
申请号：US16808035
申请日：2020-03-03
申请人： DEERE & COMPANY
发明人： Rainer Gugel , Frank Buhrke , David Müller , Michael Schumann
摘要： A powershift transmission for an agricultural machine includes a transmission housing, an input shaft and an output shaft unit. The input shaft and the output shaft unit extend at least at a distance within the transmission housing. The transmission also includes an auxiliary shaft arranged within the transmission housing and offset between the input shaft and the output shaft unit. The input shaft and the auxiliary shaft are connected to one another via a front-mounted range unit, and the auxiliary shaft and the output shaft unit are connected to one another via a rear-mounted range unit. Each range unit includes at least two individual gear wheel pairs which are coupled or decoupled. The output shaft unit includes a main output shaft and an auxiliary output shaft coupled to one another via a reduction gear unit.
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公开(公告)号：US11554659B2
公开(公告)日：2023-01-17
申请号：US17262753
申请日：2019-08-15
发明人： Geir Brudeli
摘要： A powertrain comprising a transmission (2), a first electric motor (4a) and a second electric motor (4b), the transmission having an input shaft (1) to which a source of mechanical power may be connected, an output shaft (6) and a gear assembly providing at least two different gear ratios that may be selected for transfer of mechanical power from the input shaft (1) to the output shaft (6), the first electric motor (4a) is connected to the input shaft (1), such that torque and rotation may be transferred between the first electric motor and the input shaft, and the second electric motor (4b) is connected to the input shaft (1) via a first clutch (5a), such that torque and rotation may be transferred between the second electric motor (4b) and the input shaft (1), and connected to the output shaft (6) via a second clutch (5b), such that torque and rotation may be transferred between the second electric motor (4b) and the output shaft (6), wherein the first electric motor (4a) is connected to the second electric motor (4b) via the first clutch (5a).
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公开(公告)号：US20220402496A1
公开(公告)日：2022-12-22
申请号：US17699930
申请日：2022-03-21
发明人： Jin Sung Kim
摘要： A method of controlling a powertrain of a vehicle is carried out such that during shifting in which a first clutch is released and a second clutch is engaged, whether a current shift phase is a torque phase or an inertia phase is determined. Different cost functions for the torque phase and the inertia phase are predefined. A control input change for minimizing the cost functions in the torque phase and the inertia phase is calculated. At least two among input torque, first clutch torque, or second clutch torque input to a transmission are controlled by applying the control input change calculated for the torque phase and the inertia phase.
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8.发明申请公开(公告)号：US20220396136A1
公开(公告)日：2022-12-15
申请号：US17755178
申请日：2019-10-24
发明人： Thomas BARILLOT , Bertrand CAUVIN , Jean TERRAT , Serge VANANTY
摘要： The invention relates to a vehicle axle, comprising:—a differential;—a powertrain, comprising a first electric motor (EM1) and a second electric motor (EM2);—a first transmission element between the first electric motor and said differential, this first transmission element comprising a variable transmission ratio;—a second transmission element between the second electric motor and said differential; wherein the second electric motor is controlled so as to provide its maximum power during gear changes of the first transmission element, so as to compensate at least partially for the power loss inherent in the gear change.
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公开(公告)号：US20220373081A1
公开(公告)日：2022-11-24
申请号：US17772278
申请日：2020-10-29
IPC分类号： F16H61/28 , F16H59/12 , F16H59/44 , F16H59/70 , F16H63/50 , F16H61/04 , F16H61/686 , F16H3/46
摘要： A system and method for operating the same includes a drive sprocket assembly, a clutch lever, a user interface generating a reverse signal at a user interface, a wheel speed sensor generating a wheel speed signal, a transmission position sensor generating a transmission position signal and a vehicle control module receiving the reverse signal, the wheel speed signal and the transmission position signal. The vehicle control module engages a reverse gear at a drive sprocket in response to the reverse signal, the wheel speed and transmission gear position and controls the drive sprocket assembly in response to the clutch lever.
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公开(公告)号：US11491981B2
公开(公告)日：2022-11-08
申请号：US16431184
申请日：2019-06-04
发明人： Anthony H. Heap , Jordan Billet
IPC分类号： F16H59/14 , B60W30/18 , B60W10/11 , B60W10/184 , F16H61/04
摘要： A method of determining a commanded friction brake torque is disclosed. The method uses inputs, such as from a gearshift sensor, an accelerator pedal sensor, a brake pedal sensor, and engine torque output sensor, a transmission speed input sensor and a transmission speed output sensor, to determine how much engine braking or regenerative braking is occurring. The method then uses this information combined with the braking command information from the brake pedal sensor to determine the amount of friction braking to apply to the friction brakes.
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