-
公开(公告)号：US20180328486A1
公开(公告)日：2018-11-15
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
CPC分类号： F16H61/688 , F16H3/12 , F16H61/04 , F16H2061/047
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.
-
公开(公告)号：US20230023400A1
公开(公告)日：2023-01-26
申请号：US17785577
申请日：2019-12-18
IPC分类号： F16D48/06 , F16H61/682
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).
-
公开(公告)号：US20230122960A1
公开(公告)日：2023-04-20
申请号：US18047484
申请日：2022-10-18
摘要： An automated mechanical transmission for a vehicle includes a main gearbox assembly comprising a main shaft and being adapted to be shiftable between at least one engaged state and a neutral state; a split gearbox assembly comprising an input shaft and being adapted to be shiftable between a first engaged state, a second engaged state and a neutral state; a countershaft; a crawler gearbox assembly comprising a crawler gear engagement member which is adapted to selectively engage and disengage a crawler gear defining a torque path from the input shaft to the main gearbox assembly via the countershaft; a gearbox brake; and transmission control unit. The transmission is configured to be settable in an AMT neutral state defined by the main gearbox assembly being in the neutral state. When the transmission control unit obtains a request to engage the crawler gear from the AMT neutral state, the transmission control unit is configured to apply the gearbox brake so that a rotational speed of the countershaft is reduced to a first predetermined rotational speed which is higher than a zero rotational speed; and when the first predetermined rotational speed is reached, release the gearbox brake, set the split gearbox assembly to the neutral state and engage the crawler gear by the crawler gear engagement member.
-
公开(公告)号：US20170101105A1
公开(公告)日：2017-04-13
申请号：US15317172
申请日：2014-06-24
发明人： Fredrik KARPENMAN
IPC分类号： B60W30/192 , B60W10/02 , B60W10/113 , B60W10/06
CPC分类号： B60W30/192 , B60W10/02 , B60W10/06 , B60W10/113 , B60W2710/021 , F16H61/0403 , F16H61/688 , F16H2063/3036 , F16H2312/022
摘要： A method is provided for controlling a drivetrain of a vehicle, wherein the drive train includes a combustion engine in drive connection with a dual clutch transmission, wherein the dual clutch transmission is provided with a normally closed input clutch, a normally open input clutch. wherein the normally dosed input clutch connecting the combustion engine with a first input shaft and the normally open input clutch connecting the combustion engine with a second input shaft and the first input shaft is in operative connection with a connection sleeve, wherein the connection sleeve can be arranged in an engaged and a disengaged position, whereby in the engaged position the connection sleeve enables an operative connection between the first input shaft to a gearwheel and in the disengaged position gearwheel is disconnected from the first input shaft and the connection sleeve is in a disengaged position when the drivetrain is turned off, wherein the method is automatically initiated at start of the drivetrain, and including the steps of; starting the combustion engine, controlling the normally open and the normally closed input clutch to an engaged or semi engaged state such that both the first and the second input shaft reaches a predetermined synchronised speed, and thereafter opening the normally closed input clutch, and when the countershaft sleeve reaches an essentially synchronous speed with the gearwheel engaging the connection sleeve.
-
公开(公告)号：US20200248764A1
公开(公告)日：2020-08-06
申请号：US16651854
申请日：2017-10-11
发明人： Fredrik KARPENMAN , Anders HEDMAN
IPC分类号： F16D48/06
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.
-
公开(公告)号：US20180050590A1
公开(公告)日：2018-02-22
申请号：US15555089
申请日：2015-03-03
CPC分类号： B60K28/10 , B60W30/18072 , B60W2510/0638 , B60W2510/0652 , B60W2520/10 , B60W2520/105 , B60W2540/10 , B60W2710/021
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 behaviour, in response to the test disengagement, of a second vehicle operation parameter, and based at least partly on the observation of the behaviour of the second vehicle operation parameter, determining whether to control the clutch so as to be re-engaged or disengaged.
-
公开(公告)号：US20170211690A1
公开(公告)日：2017-07-27
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.
-
8.发明申请METHOD FOR PRESELECTING A GEAR IN A MULTI-CLUTCH TRANSMISSION OF A VEHICLE UPON EXITING FREE-WHEELING STATE 审中-公开一种用于在自由轮状态下进行多离合器传动的齿轮的方法公开(公告)号：US20160229407A1
公开(公告)日：2016-08-11
申请号：US15023237
申请日：2013-10-11
发明人： Fredrik KARPENMAN
IPC分类号： B60W30/18 , B60W10/02 , B60W10/06 , B60W10/113
CPC分类号： B60W30/18072 , B60W10/02 , B60W10/06 , B60W10/113 , B60W2030/1809 , B60W2510/1015 , B60Y2300/18083 , F16H61/0403 , F16H61/688 , F16H2061/0496
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.
摘要翻译： 提供了一种用于在退出续流状态时预先选择车辆的多离合器变速器中的齿轮的方法，其中所述多离合器变速器以预选的第一组齿轮的齿轮的空转状态操作，并且 第一摩擦离合器脱离; 该方法包括以下步骤：A）在确定满足用于退出续流状态的至少一个预定条件时; 将原动机的旋转速度提高到预选齿轮的旋转同步速度; 所述第二摩擦离合器处于关闭状态，使得所述第二摩擦离合器的输入轴的转速随着所述原动机的转速的增加而增加; B）使第二摩擦离合器分离; C）在合适的时间点，啮合所述齿离合器的第二子集的至少一个齿离合器，其对应于所述第二组齿轮的齿轮，使得所述第二组齿轮的齿轮被预先选定。
-
-
-
-
-
-
-
搜索结果
8 条记录 (耗时 0.013 秒)
