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公开(公告)号：US20190277397A1
公开(公告)日：2019-09-12
申请号：US16463063
申请日：2018-02-28
发明人： Munetoshi TSUGE , Takashi TSUTSUI
摘要： The present invention provides a transmission control device for a vehicle capable of changing a threshold of a shift map for determining shift-up, thereby preventing occurrence of the shift-up during depression of an accelerator and preventing occurrence of a torque interruption. In a transmission control device for a vehicle 1 including a T/M-ECU 50 which automatically performs shift control for switching a plurality of shift gears of a transmission 20 for shift-up or shift-down, the T/M-ECU 50 has a shift threshold setting unit 54 which sets a shift threshold to be used for the shift control, on the basis of an operation plan or a surrounding state of the vehicle 1, and the shift threshold setting unit 54 sets the shift threshold to perform the shift control on the transmission 20 so as not to perform the shift-up of the transmission 20 during acceleration of the vehicle 1.
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公开(公告)号：US10358136B2
公开(公告)日：2019-07-23
申请号：US15559451
申请日：2016-04-08
发明人： Ryohey Toyota , Masato Koga
IPC分类号： B60W30/19 , B60W10/02 , B60W10/08 , B60W10/11 , B60W20/00 , F16H61/32 , F16H63/50 , B60K6/442 , B60K6/547 , B60W20/15 , F16H59/46 , F16H59/40 , F16H59/36 , F16H59/68 , F16H59/14 , F16H61/04 , B60W50/00
摘要： In a hybrid vehicle, rotational speed control on a motor/generator connected to a first engagement clutch is carried out when there is a gear shift request to a gear shift stage at which the first engagement clutch of the multistage gear transmission is meshingly engaged. A transmission control unit is provided for outputting a meshing engagement instruction to the first engagement clutch when a rotational speed feedback control causes a differential rotation speed of the first engagement clutch to be within a range of a synchronization determination rotational speed. Upon executing the rotational speed feedback control on the motor/generator, this transmission control unit reduces the efficacy of the rotational speed feedback control less than before starting of the meshingly engagement, when the meshing engagement of the first engagement clutch is started.
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公开(公告)号：US10344855B2
公开(公告)日：2019-07-09
申请号：US15592813
申请日：2017-05-11
发明人： Mohamed O Egal , Paul G Otanez , Mateusz M Nowak
IPC分类号： F16H61/662 , F16H59/46 , F16H59/14
摘要： A continuously variable transmission (CVT) and a method is provided for CVT variator gross slip detection includes determining if a difference between a commanded variator speed ratio and a real variator speed ratio is greater than a predetermined variator speed ratio threshold, and then determining if a variator rate of change ratio is outside of predetermined variator rate of change ratio limits. Further, the method includes determining if a real torque capacity ratio is greater than a predetermined torque capacity ratio threshold, and performing at least one remedial action when the variator rate of change ratio is outside of predetermined variator rate of change ratio limits, and the real torque capacity ratio is greater than the predetermined torque capacity ratio threshold when the difference between the commanded variator speed ratio and the real variator speed ratio is greater than the predetermined variator speed ratio threshold.
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公开(公告)号：US10274079B2
公开(公告)日：2019-04-30
申请号：US15644252
申请日：2017-07-07
摘要： An electronic control unit is configured to set a target torque phase time which is used in torque phase control based on an output shaft torque difference. The electronic control unit sets the target torque phase time to be longer when the output shaft torque difference is large than when the output shaft torque difference is small. Accordingly, since the target torque phase time can be appropriately set, it is possible to achieve both of preventing a sudden change in driving force and torsion vibration of an output shaft and preventing a decrease in drivability due to hesitation at the same time. Sudden change in driving force and torsion vibration of the output shaft occur when the difference in driving force between before and after a gear shift is large. Hesitation occurs when the difference in driving force between before and after the gear shift is small.
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公开(公告)号：US10252723B2
公开(公告)日：2019-04-09
申请号：US14958663
申请日：2015-12-03
发明人： Seong Jin Park , Woo Sik Yoon
IPC分类号： F16H61/00 , B60W30/19 , B60W10/02 , B60W10/06 , F16H63/46 , F16H61/688 , F16H61/04 , B60W10/113 , F16H59/46
摘要： A slip factor learning method of a dual clutch transmission (DCT) may include: determining, by a control unit, whether the DCT is up-shifted or down-shifted; comparing an engine speed to a shift start reference speed, and determining whether the engine speed enters an actual gear shifting period or actual gear shifting is completed, in response to the determined type of the gear shifting; comparing a magnitude of an engine torque to a magnitude of a clutch torque at a point of time that the engine speed enters the actual gear shifting period or the actual gear shifting is completed; and learning a slip factor at the point of time that the engine speed enters the actual gear shifting period or the actual gear shifting is completed, based on the magnitude comparison result between the engine torque and the clutch torque.
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公开(公告)号：US10197157B2
公开(公告)日：2019-02-05
申请号：US15005290
申请日：2016-01-25
IPC分类号： F16H61/662 , F16H9/18 , F16H59/18 , F16H59/40 , F16H59/42 , F16H59/44 , F16H59/46 , F16H59/48 , F16H59/36 , F16H59/50
摘要： A continuously variable transmission (CVT) for a vehicle includes an input member, an output member and a variator assembly including a first pulley rotatably coupled to the input member and a second pulley rotatably coupled to the output. The first and second pulleys are rotatably coupled by a flexible continuous rotatable device. A control system is provided including an instruction set executable to determine an initial variator speed ratio of the variator assembly and detect an event causing a change in an operational state of the vehicle. The control system determines a compensation strategy to adjust the variator speed ratio in response to the change in the operational state of the vehicle and generates an adjusted variator speed ratio based upon the compensation strategy. The control system transmits the adjusted variator speed ratio to the variator assembly.
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公开(公告)号：US10065648B2
公开(公告)日：2018-09-04
申请号：US14782452
申请日：2013-04-04
发明人： Kenji Matsuo , Yusuke Ohgata , Daisuke Inoue , Atsushi Ayabe , Motonori Kimura , Shuhei Ishikawa , Akira Hino , Hiroki Kondo
IPC分类号： B60W30/19 , F16H61/04 , F16H61/662 , B60K17/00 , B60W10/02 , B60W10/107 , F16H37/02 , F16H59/14 , F16H59/46 , F16H59/48 , F16H59/68 , F16H61/02
摘要： Vehicle control system and method provided to change speed ratio smoothly when switching a power transmission route from a route including a geared transmission to a route including a continuously variable transmission. Vehicle control system applied to a vehicle comprising: continuously variable transmission for changing speed ratio continuously is disposed between input shaft and output shaft; geared transmission is disposed parallel to the continuously variable transmission, and is adapted to establish speed ratio that cannot be established by continuously variable transmission; and friction clutch is brought into engagement to switch torque transmission route from a route including the geared transmission to a route including the continuously variable transmission. Vehicle control system configured to start speed change operation of continuously variable transmission before the friction clutch is brought into engagement completely when switching torque transmission route from the route including the geared transmission to the route including the continuously variable transmission.
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公开(公告)号：US09815368B2
公开(公告)日：2017-11-14
申请号：US14952964
申请日：2015-11-26
发明人： Paul Roeland Verheijen , Jasper Johannes Anthonius Pauwelussen , Marco Leupold , Christoph Ebert , Steffen Orlowsky , Markus Oesterreich
IPC分类号： B60K31/00 , B60W40/09 , G07C5/00 , G07C5/08 , F16H59/44 , F16H59/46 , F16H61/02 , B60W50/14 , B60W30/18 , G01C21/36 , G08G1/01 , G07C5/02 , G07C5/06 , G08G1/0962 , G08G1/0967 , G08G1/0968 , B60R16/023 , B60W50/00 , F16H63/42
CPC分类号： G01C21/3697 , B60K31/00 , B60K2350/1092 , B60R16/0236 , B60W30/18 , B60W30/18072 , B60W30/18109 , B60W30/18136 , B60W40/09 , B60W50/14 , B60W2030/18081 , B60W2030/1809 , B60W2050/0078 , B60W2510/0623 , B60W2510/0638 , B60W2510/0642 , B60W2510/0647 , B60W2510/1005 , B60W2520/10 , B60W2520/105 , B60W2530/14 , B60W2550/14 , B60W2550/141 , B60W2550/20 , B60W2550/402 , B60W2560/06 , B60W2710/0655 , B60Y2300/52 , F16H59/44 , F16H59/46 , F16H59/70 , F16H61/0213 , F16H61/0246 , F16H63/42 , F16H2059/366 , F16H2061/0218 , F16H2063/426 , G01C21/3632 , G01C21/3673 , G01P1/06 , G07C5/004 , G07C5/008 , G07C5/02 , G07C5/06 , G07C5/0816 , G07C5/0825 , G07C5/0841 , G07C5/085 , G08G1/0112 , G08G1/0129 , G08G1/0137 , G08G1/0141 , G08G1/052 , G08G1/09626 , G08G1/0967 , G08G1/096716 , G08G1/096741 , G08G1/096775 , G08G1/096827 , G08G1/09685 , G08G1/096861 , Y02T10/76 , Y02T10/84
摘要： A method and apparatus for evaluating an advised driving speed of a vehicle traversing a particular portion of a road network is disclosed. The method comprises accessing first predetermined data indicative of the variation in average fuel consumption for the vehicle with speed of the vehicle, using the first predetermined data to determine data indicative of average fuel consumption for the vehicle for a plurality of speeds within a range based on a speed limit for the portion of the road network being traversed, and evaluating the advised driving speed of the vehicle based at least in part on the determined data indicative of average fuel consumption for the vehicle for the range of speeds. The evaluation of the advised driving speed may further be based on second predetermined data indicative of the variation in a likelihood of the vehicle being in the highest gear with speed of the vehicle.
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公开(公告)号：US09709165B2
公开(公告)日：2017-07-18
申请号：US14799772
申请日：2015-07-15
CPC分类号： F16H61/12 , F16H61/143 , F16H2059/467 , F16H2061/1224
摘要： In an apparatus for controlling an automatic transmission connected to a prime mover mounted on a vehicle, having a torque converter equipped with a lock-up clutch, when the automatic transmission is gear-shifted to a predetermined gear at deceleration of the vehicle and it is determined that predetermined operating conditions of the vehicle are satisfied, a lock-up clutch engaging circuit is formed through a hydraulic supply circuit. Next it is determined whether engage-position sticking malfunction of the lock-up clutch has occurred based on a ratio of an input rotational speed of the automatic transmission relative to an output rotational speed of the prime mover when the lock-up clutch engaging circuit has been formed, and fail-safe control is then implement when the sticking is determined.
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公开(公告)号：US09638318B2
公开(公告)日：2017-05-02
申请号：US15023180
申请日：2014-10-17
申请人： JATCO Ltd , NISSAN MOTOR CO., LTD.
发明人： Kiyofumi Sasaki , Youji Itou
IPC分类号： F16H55/56 , F16H61/662 , F16H59/46 , F16H59/44
CPC分类号： F16H61/662 , F16H59/44 , F16H2059/446 , F16H2059/465 , F16H2061/6629
摘要： There are provided a continuously variable transmission (CVT) in which a belt (7) is wound around a primary pulley (5) and a secondary pulley (6) to transmit power; a primary pulley rotational speed sensor (13) for detecting a rotational speed of the primary pulley (5); a vehicle stopped state determination means for determining whether a vehicle is in a stopped state; a belt slippage detection means for detecting belt slippage on the basis of a signal of the primary pulley rotational speed sensor (13); and a prohibition means for prohibiting detection of the belt slippage by the belt slippage detection means when a parking range or a neutral range is selected by a shift lever operation by a driver. In the vehicle stopped state during selection of the parking range or the neutral range, the rotational speed of the primary pulley (5) is not basically output, and the belt slippage does not occur. Thus, erroneous detection of the belt slippage can be avoided by prohibiting the detection of the belt slippage in this case.
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