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1.发明授权公开(公告)号：US09086144B2
公开(公告)日：2015-07-21
申请号：US14388672
申请日：2013-02-21
申请人： JATCO LTD. , NISSAN MOTOR CO., LTD.
IPC分类号： F16H61/04 , F16H61/662 , F16H59/42
CPC分类号： F16H61/66227 , F16H59/42 , F16H61/04 , F16H61/10 , F16H61/66259 , F16H61/66272 , F16H2059/425 , F16H2061/0477
摘要： A transmission controller detects a rotation speed of an input shaft, calculates an inertia torque input to a continuously variable transmission based on a change ratio of the detected rotation speed, obtains a positive inertia torque by extracting a positive portion from the calculated inertia torque, and corrects pulley pressures based on the extracted positive inertia torque.
摘要翻译： 变速器控制器检测输入轴的转速，根据所检测的转速的变化率计算输入到无级变速器的惯性转矩，通过从所计算的惯性转矩中提取正的部分来获得正的惯性转矩;以及 根据所提取的正惯性转矩修正滑轮压力。
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公开(公告)号：US09488271B2
公开(公告)日：2016-11-08
申请号：US14779521
申请日：2013-11-28
申请人： JATCO Ltd , NISSAN MOTOR CO., LTD.
IPC分类号： F16H61/662 , F16G1/22 , F16H9/18
CPC分类号： F16H61/66272 , F16G1/22 , F16H9/18 , F16H2061/66277
摘要： A control device for a belt-type continuously variable transmission CVT includes an engine 1, a belt-type continuously-variable transmitting mechanism 4; a forward/reverse switching mechanism 3 including a forward clutch 31 and a reverse brake 32; and a hydraulic control circuit 71 configured to control a pulley hydraulic pressure and engagement-element pressures for the forward clutch 31 and the reverse brake 32. The control device includes a selection control means for outputting a pulley hydraulic command to obtain an idle-time clamping pressure which is higher than an idle-time minimum pressure (idle-time MIN-pressure) calculated from an input torque, to the hydraulic control circuit 71, when the engine 1 is in operation during a selection of N-range. A position of an element clearance generated in the belt can be maintained even if drag torque is inputted.
摘要翻译： 带式无级变速器CVT的控制装置包括发动机1，带式无级变速传动机构4; 包括前进离合器31和倒车制动器32的前进/后退切换机构3; 以及液压控制回路71，被配置为控制前进离合器31和后退制动器32的滑轮液压和接合元件压力。控制装置包括选择控制装置，用于输出滑轮液压指令以获得空转时间夹紧 在选择N档期间，当发动机1运转时，高于从输入转矩计算出的空转时间最小压力（空转时MIN值）到液压控制回路71的压力。 即使输入阻力矩，也能够保持带内产生的元件间隙的位置。
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3.发明申请公开(公告)号：US20150081181A1
公开(公告)日：2015-03-19
申请号：US14387414
申请日：2014-02-21
申请人： JATCO Ltd. , NISSAN MOTOR CO., LTD
发明人： Seiichiro Takahashi , Takashi Eguchi , Tomohiro Utagawa , Yuta Ishinabe , Tetsuya Izumi , Takahiro Kobayashi
IPC分类号： F16H61/662
CPC分类号： F16H61/66236 , F16H61/66 , F16H61/662 , F16H61/6624 , F16H61/66259 , F16H61/66272 , F16H2061/66277 , F16H2061/6629
摘要： A transmission controller determines whether a shift returning to low, changing a speed ratio of a continuously variable transmission to the lowest when a vehicle decelerates, is being performed or not, calculates a primary pressure measured lower limit value at which a belt begins to slip actually, based on a deceleration of the vehicle and the speed ratio of the continuously variable transmission, and sets a lower limit value of a target value of the primary pressure during the shift returning to low as the primary pressure measured lower limit value.
摘要翻译： 传动控制器确定是否执行了将车辆减速时将无级变速器的变速比改变为最低的换档返回到低档，计算皮带实际上开始滑动的初级压力测量下限值 基于车辆的减速度和无级变速器的变速比，并且将换档期间的一次压力的目标值的下限值作为一次压力测量下限值设定为低。
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4.发明授权公开(公告)号：US09133930B2
公开(公告)日：2015-09-15
申请号：US14387414
申请日：2013-02-21
申请人： JATCO LTD , NISSAN MOTOR CO., LTD.
发明人： Seiichiro Takahashi , Takashi Eguchi , Tomohiro Utagawa , Yuta Ishinabe , Tetsuya Izumi , Takahiro Kobayashi
IPC分类号： F16H61/662 , F16H61/66
CPC分类号： F16H61/66236 , F16H61/66 , F16H61/662 , F16H61/6624 , F16H61/66259 , F16H61/66272 , F16H2061/66277 , F16H2061/6629
摘要： A transmission controller determines whether a shift returning to low, changing a speed ratio of a continuously variable transmission to the lowest when a vehicle decelerates, is being performed or not, calculates a primary pressure measured lower limit value at which a belt begins to slip actually, based on a deceleration of the vehicle and the speed ratio of the continuously variable transmission, and sets a lower limit value of a target value of the primary pressure during the shift returning to low as the primary pressure measured lower limit value.
摘要翻译： 传动控制器确定是否执行了将车辆减速时将无级变速器的变速比改变为最低的换档返回到低档，计算皮带实际上开始滑动的初级压力测量下限值 基于车辆的减速度和无级变速器的变速比，并且将换档期间的一次压力的目标值的下限值作为一次压力测量下限值设定为低。
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公开(公告)号：US09863533B2
公开(公告)日：2018-01-09
申请号：US15021501
申请日：2014-10-17
申请人： JATCO Ltd , NISSAN MOTOR CO., LTD.
发明人： Seiichiro Takahashi , Daisuke Aoki , Takahiro Kobayashi , Juwan Kim , Shinichiro Watanabe , Yuta Suzuki
IPC分类号： F16H61/662 , F16H9/18 , F16H61/664 , F16H61/04 , F16H61/12
CPC分类号： F16H61/662 , F16H9/18 , F16H61/66272 , F16H61/6649 , F16H2061/0485 , F16H2061/0488 , F16H2061/1232 , F16H2061/66222
摘要： A control apparatus for a continuously variable transmission (1) that includes a belt-type continuously variable transmission mechanism (40) and friction engagement elements (32), (33) is disclosed. The control apparatus includes: an operation position detection section (65) configured to detect an operation position of a selection lever (50); a selection control section (60b) configured to execute a selection control for engaging the friction engagement elements (32), (33) from a time point at which a switching from a non-travel range to a travel range is detected; a determination section (60) configured to determine engagement states of the friction engagement elements (32, 33); and a pulley pressure control section (60c) configured to control a pulley pressure supplied to two pulleys (41), (42). A belt slippage during an engagement of clutches is suppressed while a load on an oil pump is reduced.
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6.发明申请公开(公告)号：US20150051032A1
公开(公告)日：2015-02-19
申请号：US14388672
申请日：2013-02-21
申请人： ATCO LTD , NISSAN MOTOR CO., LTD.
IPC分类号： F16H61/662 , F16H61/04
CPC分类号： F16H61/66227 , F16H59/42 , F16H61/04 , F16H61/10 , F16H61/66259 , F16H61/66272 , F16H2059/425 , F16H2061/0477
摘要： A transmission controller detects a rotation, speed of an input shaft, calculates an inertia torque input to a continuously variable transmission based on a change ratio of the detected rotation speed, obtains a positive inertia torque by extracting a positive portion from the calculated inertia torque, and corrects pulley pressures based on the extracted positive inertia torque.
摘要翻译： 变速器控制器根据所检测的转速的变化率来检测输入轴的旋转速度，计算输入到无级变速器的惯性转矩，通过从计算出的惯性转矩中提取正的部分来获得正惯性转矩， 并根据所提取的正惯性转矩修正滑轮压力。
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公开(公告)号：US09487214B2
公开(公告)日：2016-11-08
申请号：US14910390
申请日：2014-08-01
申请人： JATCO Ltd
发明人： Tomoaki Honma , Takahiro Kobayashi
IPC分类号： B60W10/06 , B60W10/101 , B60W30/19 , B60W10/04 , B60W10/107 , B60W30/182 , F16H61/04 , F16H61/662 , F16H63/50 , F16H61/66
CPC分类号： B60W30/19 , B60W10/04 , B60W10/06 , B60W10/101 , B60W10/107 , B60W30/182 , B60W2510/104 , B60W2540/16 , B60W2710/0666 , B60W2710/1005 , B60Y2200/92 , F16H61/04 , F16H61/662 , F16H61/66259 , F16H63/50 , F16H2061/6615 , F16H2061/6617
摘要： First control unit performing first pseudo stepwise up-shift control that, in first travelling mode, increases vehicle speed while performing hold of transmission ratio and up-shift by first shifting speed and reduces engine torque upon up-shift, second control unit performing second pseudo stepwise up-shift control that, in second travelling mode, increases vehicle speed while performing hold of transmission ratio and up-shift by second shifting speed and reduces engine torque upon up-shift, and third control unit controlling change of travelling mode and switch between two pseudo stepwise up-shift controls according to control states of first and second control units, are provided. When travelling mode is changed to second travelling mode during progress of up-shift in first pseudo stepwise up-shift control, third control unit maintains first pseudo stepwise up-shift control until up-shift is completed. With this, harmonization between pseudo stepwise up-shift control and engine torque control is secured, then shift shock is suppressed.
摘要翻译： 第一控制单元执行第一伪逐步上移控制，其在第一行驶模式中，通过第一移位速度执行传动比保持和上移，并且在上变速时降低发动机转矩，来增加车速，第二控制单元执行第二伪运动 在第二行驶模式中，在执行传动比的保持和第二换档速度的上移以及上移时的发动机扭矩的降低的同时，在第二行驶模式下增大车速，第三控制单元控制行驶模式的变更和行驶模式之间的切换 提供了根据第一和第二控制单元的控制状态的两个伪逐步上移控制。 在第一伪逐级上移控制的上行移动中，当行驶模式改变为第二行驶模式时，第三控制单元保持第一伪逐级上移控制，直到上移完成。 由此，可以确保伪逐级上变换控制与发动机转矩控制之间的协调，从而抑制变速冲击。
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公开(公告)号：US09958062B2
公开(公告)日：2018-05-01
申请号：US15125907
申请日：2015-02-26
申请人： JATCO Ltd
发明人： Tomoaki Honma , Seiichiro Takahashi , Takahiro Kobayashi , Takashi Eguchi , Hisao Nobu , Kenji Sakakibara
IPC分类号： F16H59/00 , F16H61/00 , F16H63/00 , F16H61/662 , F16H9/16
CPC分类号： F16H61/662 , F16H9/16 , F16H61/0021 , F16H61/66272
摘要： A CVTECU includes a secondary-pressure control section and a line-pressure control section that performs a same-pressure control to equalize a line pressure and a secondary pressure with each other if a predetermined start condition is satisfied. The line-pressure control section realizes a same-pressure state between the line pressure and the secondary pressure by lowering the line pressure below a target secondary pressure, and then controls the line pressure such that an actual secondary pressure is brought to the target secondary pressure by hydraulic feedback control while maintaining the same-pressure state. The secondary-pressure control section includes a restriction section that restricts an accumulation of integral term of an integral action for a duration between a time point at which the actual secondary pressure starts to be pushed down and a time point at which the same-pressure state between the line pressure and the secondary pressure is realized.
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