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公开(公告)号：US20240360902A1
公开(公告)日：2024-10-31
申请号：US18644828
申请日：2024-04-24
发明人： Tobias Dieterich , Sven Bieber , Anton Arnold
CPC分类号： F16H61/16 , F16H47/06 , F16H57/0413 , F16H59/72 , F16H61/0059
摘要： The present invention relates to a method for heating a transmission (1) for a working machine having a plurality of hydraulically actuated shifting elements (8; 9; 10; 11; 12; 13). The method involves the sending (III) of a closing signal for closing shifting elements (8; 9; 10; 11; 12; 13) in order to block the transmission (1). In addition, the method entails pulsed actuation (V) for opening and closing of at least one of the closed shifting elements (8; 9; 10; 11; 12; 13) while the transmission (1) remains blocked. Furthermore, the present invention relates to a control unit which is designed to carry out such a method, and to a transmission for a working machine with such a control unit.
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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
发明人： Ulf Lang , Jürgen Blaser
CPC分类号： F16H61/0403 , F16H47/08 , F16H59/40 , F16H59/54 , F16H59/72 , F16H61/682 , F16H2059/6823 , F16H2061/0474
摘要： 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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3.发明授权公开(公告)号：US11773966B2
公开(公告)日：2023-10-03
申请号：US17930512
申请日：2022-09-08
发明人： Ralf Beck
CPC分类号： F16H61/16 , F16H59/40 , F16H59/44 , F16H59/48 , F16H59/72 , F16H2059/443 , F16H2200/006 , F16H2200/0052 , F16H2200/0082
摘要： Disclosed is a method for operating a multi-gear vehicle transmission having a plurality of shifting elements (A, B, C, D, E) for engaging gears of the vehicle transmission. In a neutral gear, in which some of the shifting elements (A, B) are already actuated, a transmission input (1) is decoupled from a transmission output (2) of the vehicle transmission. In a driving gear the transmission input (1) is coupled to the transmission output (2) of the vehicle transmission by closing the shifting elements (A, B, C, D, E) associated with the driving gear, in order to propel the vehicle. With the neutral gear engaged a transmission condition is determined, and if a transmission condition with elevated drag losses exists, then in addition to the shifting elements (A, B) actuated in the neutral gear a shifting element (D) associated with a reversing gear of the vehicle transmission is also closed.
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4.发明公开公开(公告)号：US20230213095A1
公开(公告)日：2023-07-06
申请号：US17999855
申请日：2020-05-25
发明人： Guojie TANG , Lei LIU , Yan SUN , Wenyu HU , Liqing SHAO
IPC分类号： F16H61/14 , F16H59/50 , F16H59/48 , F16H59/18 , F16H59/44 , F16H59/14 , F16H59/72 , F16H59/74 , F16H59/70
CPC分类号： F16H61/14 , F16H59/50 , F16H59/48 , F16H59/18 , F16H59/44 , F16H59/14 , F16H59/72 , F16H59/74 , F16H59/70 , F16H2059/183 , F16H2059/366
摘要： Disclosed are a method and device for controlling the state switching of a fluid torque converter, a vehicle and a storage medium, the method including: obtaining a target instruction when the torque converter of the vehicle is in a locked state, the target instruction triggering a change in the torque transmission direction of a transmission system of the vehicle; obtaining a state parameter, and determining whether the current vehicle is in a target operating condition according to the state parameter; and if the current vehicle is in the target operating condition, switching the fluid torque converter to an open state, and switching the torque converter back to the locked state after maintaining the open state for a preset period of time.
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5.发明公开公开(公告)号：US20230184330A1
公开(公告)日：2023-06-15
申请号：US17930520
申请日：2022-09-08
发明人： Sascha Fiesel
CPC分类号： F16H61/20 , F16H59/50 , F16H59/72 , F16H61/16 , F16H61/2807 , F16H2059/6823 , F16H2200/006 , F16H2200/0052 , F16H2200/201 , F16H2200/2012 , F16H2200/2043
摘要： Disclosed is method for operating a multi-gear vehicle transmission having a plurality of shifting elements (A, B, C, D, E) for engaging gears of the vehicle transmission. In a neutral gear a transmission input (1) and a transmission output (2) of the vehicle transmission are decoupled from one another. In a driving gear the transmission input (1) and the transmission output (2) of the vehicle transmission are coupled with one another by closing the shifting elements (A, B, C, D, E) associated with the driving gear in order to propel the vehicle. When the neutral gear is engaged, a transmission condition is determined, and if a transmission condition with elevated drag losses exists, then in addition to the shifting elements (A, B, C, D, E) of a driving gear, at least one further shifting element (A, B, C, D, E) of the vehicle transmission is closed.
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公开(公告)号：US20230184328A1
公开(公告)日：2023-06-15
申请号：US17959754
申请日：2022-10-04
发明人： Jungho PARK
摘要： A method of controlling a transmission of a vehicle, includes determining, by a controller, whether a shift prohibition condition for preventing overheating of the transmission of the vehicle in a terrain mode, which is a rough road driving mode of the vehicle, is satisfied; determining, by the controller, whether a shift operation of the transmission corresponding to a busy shift phenomenon of the transmission is detected when the shift prohibition condition is satisfied; and prohibiting, by the controller, shifting of the transmission when the shift operation of the transmission corresponding to the busy shift phenomenon of the transmission is detected.
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公开(公告)号：US11649892B2
公开(公告)日：2023-05-16
申请号：US17365676
申请日：2021-07-01
发明人： Kota Fujii , Atsushi Tabata , Koichi Okuda , Ken Imamura , Hideaki Bunazawa , Keita Sasaki
IPC分类号： F16H61/04 , F16H59/18 , F16H59/70 , F16H59/42 , F16H61/02 , F16H59/72 , F16H59/68 , F16H61/00
CPC分类号： F16H61/04 , F16H59/18 , F16H59/42 , F16H59/70 , F16H59/72 , F16H61/0265 , F16H2059/683 , F16H2059/6807 , F16H2061/0096
摘要： A hydraulic pressure calculation apparatus is applied to a gear shifting system including a transmission configured to switch between a connected state and a disconnected state of a friction engagement element depending on a hydraulic pressure supplied from a hydraulic circuit, and a hydraulic controller configured to control the hydraulic circuit. The hydraulic pressure calculation apparatus includes a memory and a processor. The memory stores pieces of mapping data of a plurality of phases obtained by dividing a period from a start to an end of switching between the connected state and the disconnected state of the friction engagement element. Each piece of the mapping data defines a mapping. The processor is configured to output, as an output variable, an estimated hydraulic pressure variable indicating an estimated value of an actual hydraulic pressure supplied from the hydraulic circuit to the friction engagement element.
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公开(公告)号：US11603920B2
公开(公告)日：2023-03-14
申请号：US17025046
申请日：2020-09-18
摘要： A control device for an automatic transmission is provided, which includes a vehicle-propelling friction engagement element configured to be engaged when a vehicle starts traveling, an other friction engagement element, a vehicle-propelling friction engagement element temperature detector configured to detect a temperature of the vehicle-propelling friction engagement element, an other friction engagement element temperature detector configured to detect a temperature of the other friction engagement element, and a processor configured to execute lubricant supply control logic to control supply of lubricant to the vehicle-propelling friction engagement element and the other friction engagement element. The lubricant supply control logic switches the supply amount of lubricant to the vehicle-propelling friction engagement element according to the temperature of the vehicle-propelling friction engagement element, and switches the supply amount of lubricant to the other friction engagement element according to the temperature of the other friction engagement element.
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公开(公告)号：US11585437B1
公开(公告)日：2023-02-21
申请号：US17653063
申请日：2022-03-01
摘要： Vehicles and related systems and methods are provided for round-robin air purging of disengaged clutches. One method involves obtaining a plurality of weighting factors associated with respective ones of a plurality of clutches of a vehicle transmission, obtaining an exhaustion time associated with each respective clutch, determining a respective priority metric associated with the each respective clutch based at least in part on the exhaustion time associated with the respective clutch and the respective weighting factor associated with the respective clutch, determining a highest priority clutch of the plurality of clutches based at least in part on the respective priority metrics associated with the respective clutches of the plurality of clutches, and operating one or more valves in accordance with a pulse command to pulse the highest priority clutch with a commanded pressure for a commanded period of time.
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公开(公告)号：US11543026B2
公开(公告)日：2023-01-03
申请号：US17000559
申请日：2020-08-24
IPC分类号： F16H57/04 , F16H59/72 , F16H61/4165 , F16H57/01
摘要： A control device for an automatic transmission is provided, which includes a friction engagement element, and a processor configured to execute gear change control logic configured to control a gear change operation by supplying and discharging hydraulic fluid for forming a gear stage to/from the friction engagement element, and lubricant supply control logic configured to control to switching operation of a supply amount of lubricant to the friction engagement element according to an operating state of a vehicle. The processor controls the gear change operation and the switching operation to not overlap with one another.
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