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公开(公告)号：US11137039B2
公开(公告)日：2021-10-05
申请号：US16651854
申请日：2017-10-11
发明人： Fredrik Karpenman , Anders Hedman
摘要： The present invention relates to a method for controlling a clutch arrangement (102) of a vehicle transmission (100) arranged within a gearbox housing (104) of a vehicle, the clutch arrangement being connected to a pneumatically controlled actuator arrangement (106) for controllably arrange the clutch arrangement between a closed position and an open position, wherein the vehicle transmission further comprises at least one rotatable transmission component (108, 108′, 108″) configured to assume an engaged state, a disengaged state and an at least partially engaged state. By means of the method, the rotatable transmission component is arranged to be positioned in the at least partially engaged state for increasing the heat within the gearbox housing.
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公开(公告)号：US12123487B2
公开(公告)日：2024-10-22
申请号：US17729138
申请日：2022-04-26
IPC分类号： F16H57/02 , F16H57/027 , F16H61/00 , F16H61/30 , F16H63/30
CPC分类号： F16H57/027 , F16H61/0025 , F16H63/3023 , F16H61/30
摘要： A transmission includes a plurality of pneumatic actuators for gear shifting, wherein the pneumatic actuators are arranged to discharge compressed air via a common ventilation system including at least one ventilation opening arranged in a housing arrangement of the transmission. A method for controlling ventilation of the transmission includes determining that a predetermined flushing condition is fulfilled and, in response thereto, initiating a flushing action in which at least two of the pneumatic actuators are controlled to discharge compressed air simultaneously or substantially simultaneously to the common ventilation system so as to force air through the at least one ventilation opening.
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公开(公告)号：US10196060B2
公开(公告)日：2019-02-05
申请号：US15023237
申请日：2013-10-11
发明人： Fredrik Karpenman
IPC分类号： B60W30/18 , B60W10/113 , F16H61/04 , F16H61/688 , B60W10/02 , B60W10/06
摘要： A method is provided for preselecting a gear in a multi-clutch transmission of a vehicle upon exiting free-wheeling state, wherein the multi-clutch transmission being operated in a free-wheeling state having a gear of a first set of gears preselected and a first friction clutch being disengaged; the method including the steps of: A) upon determining that at least one predetermined condition for exiting free-wheeling state is met; increasing the rotational speed of the prime mover towards a rotational synchronization speed of the preselected gear; the second friction clutch being in a closed state such that the rotational speed of the input shaft of the second friction clutch increases with the increasing rotational speed of the prime mover; B) disengaging the second friction clutch; C) engaging, at a suitable time point, at least one tooth clutch of the second subset of the tooth clutches corresponding to a gear of the second set of gears such that the gear of the second set of gears becomes preselected.
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公开(公告)号：US09835250B2
公开(公告)日：2017-12-05
申请号：US15314112
申请日：2014-11-05
发明人： Oskar Lygner , Fredrik Karpenman
CPC分类号： F16H61/12 , F16H61/30 , F16H63/3023 , F16H2061/0474 , F16H2061/2823 , F16H2063/3093
摘要： A method is provided for controlling an actuator of a vehicle transmission, the actuator being connected to an engaging sleeve, the engaging sleeve being axially displaceable between a gear wheel disengaging position and a gear wheel engaging position of the vehicle transmission for executing a transmission gear shift. The method includes actuating the actuator during a first predetermined time period for initiating a translational movement of the engaging sleeve front the gear wheel disengaging position towards the gear wheel engaging position, wherein the first predetermined time period is smaller than a total time period for the engaging sleeve to reach the gear wheel engaging position, determining, during a second predetermined time period initiated after the duration of the first predetermined time period, if the engaging sleeve has reached the gear wheel engaging position, and actuating the actuator during a third predetermined time period if it was determined that the engaging sleeve failed to reach the gear wheel engaging position during the second predetermined time period. A corresponding computer, computer readable medium, control unit, and vehicle transmission are also provided.
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公开(公告)号：US10239404B2
公开(公告)日：2019-03-26
申请号：US15555089
申请日：2015-03-03
摘要： A method of controlling a vehicle presenting a plurality of wheels, an engine and a clutch for selectively connecting the engine to a number of the wheels includesreceiving a torque control signal indicative of a demanded output torque of the engine, and observing a value of a first vehicle operation parameter being the vehicle speed or a parameter which is indicative of the vehicle speed,controlling the clutch so as to be engaged if the received torque control signal indicates that the demanded engine torque is minimal or below a first threshold value and the observed first vehicle operation parameter value is above a second threshold value, subsequently to the step of controlling the clutch so as to be engaged, performing a test disengagement of the clutch, including at least partly disengaging the clutch, observing a behavior, in response to the test disengagement, of a second vehicle operation parameter, and based at least partly on the observation of the behavior of the second vehicle operation parameter, determining whether to control the clutch so as to be re-engaged or disengaged.
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公开(公告)号：US11913505B2
公开(公告)日：2024-02-27
申请号：US17928090
申请日：2020-06-01
IPC分类号： F16D48/06
CPC分类号： F16D48/06 , F16D2500/10412 , F16D2500/3067 , F16D2500/30808 , F16D2500/30816
摘要： A system for controlling a clutch in a heavy vehicle including an internal combustion engine and an automated mechanical transmission, where the engine is running, the clutch is engaged and the transmission is in neutral, including an electronic control unit adapted to receive a request to shut down the engine, to disengage the clutch of the transmission, and to shut down the engine, where the electronic control unit is adapted to reengage the clutch when the rotation of the engine and the rotation of the transmission input shaft is zero, and to actively slow down rotation of the transmission input shaft by the use of a brake device if the stop time for the transmission input shaft exceeds a predefined time interval. The advantage of the invention is that vibrations and noise are reduced during shut down of the engine.
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公开(公告)号：US11846330B2
公开(公告)日：2023-12-19
申请号：US17785577
申请日：2019-12-18
IPC分类号： F16D48/06 , F16H61/682
CPC分类号： F16D48/06 , F16H61/682 , F16D2500/10412 , F16D2500/1112 , F16D2500/3026 , F16D2500/30406 , F16D2500/30417 , F16D2500/30426 , F16D2500/50263 , F16D2500/70264 , F16H2342/042
摘要： The present disclosure relates to a method for defining a clutch slipping point position (Xsp) of a clutch in a gearbox comprising an input shaft arranged to be braked by a braking means. The method includes determining if the clutch is dragging when the clutch is fully disengaged. The method includes when it is determined that the clutch is dragging, applying the braking means with a predetermined brake torque (Tb) and so that the input shaft is not rotating; and thereafter: moving the clutch from the fully disengaged position towards an engaged position; determining when the input shaft starts to rotate with a predetermined rotation value indicative of a rotational speed of the input shaft; registering a clutch position (Xb) in which the clutch is positioned when the predetermined rotation value is reached; using a clutch transfer characteristics of the clutch, Tb, and Xb to define the clutch slipping point position (Xsp).
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8.发明公开公开(公告)号：US20230220888A1
公开(公告)日：2023-07-13
申请号：US17928090
申请日：2020-06-01
IPC分类号： F16D48/06
CPC分类号： F16D48/06 , F16D2500/30808 , F16D2500/3067 , F16D2500/30816 , F16D2500/10412
摘要： A system for controlling a clutch in a heavy vehicle including an internal combustion engine and an automated mechanical transmission, where the engine is running, the clutch is engaged and the transmission is in neutral, including an electronic control unit adapted to receive a request to shut down the engine, to disengage the clutch of the transmission, and to shut down the engine, where the electronic control unit is adapted to reengage the clutch when the rotation of the engine and the rotation of the transmission input shaft is zero, and to actively slow down rotation of the transmission input shaft by the use of a brake device if the stop time for the transmission input shaft exceeds a predefined time interval. The advantage of the invention is that vibrations and noise are reduced during shut down of the engine.
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公开(公告)号：US20220341489A1
公开(公告)日：2022-10-27
申请号：US17729138
申请日：2022-04-26
IPC分类号： F16H57/027 , F16H63/30 , F16H61/00 , F15B15/20
摘要： A transmission includes a plurality of pneumatic actuators for gear shifting, wherein the pneumatic actuators are arranged to discharge compressed air via a common ventilation system including at least one ventilation opening arranged in a housing arrangement of the transmission. A method for controlling ventilation of the transmission includes determining that a predetermined flushing condition is fulfilled and, in response thereto, initiating a flushing action in which at least two of the pneumatic actuators are controlled to discharge compressed air simultaneously or substantially simultaneously to the common ventilation system so as to force air through the at least one ventilation opening.
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公开(公告)号：US10400892B2
公开(公告)日：2019-09-03
申请号：US15515625
申请日：2014-11-20
发明人： Fredrik Karpenman
IPC分类号： F16H61/688 , F16H3/12 , F16H61/04
摘要： A method for controlling a multi-clutch transmission of a vehicle includes activating the central synchronizer to the first active state, such that the speed of a first member of a tooth clutch, attempting to engage the tooth clutch to be engaged, and if the tooth clutch to be engaged is determined not to be fully engaged a predetermined period of time after an initiation of an engagement, the following steps are performed: activating the central synchronizer to the second active state such that the speeds of the two members of the tooth clutch to be engaged are slightly unsynchronized, and engaging the tooth clutch to be engaged.
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