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.

公开(公告)号：US20150148157A1

公开(公告)日：2015-05-28

申请号：US14405289

申请日：2013-05-28

申请人： JATCO LTD ,  NISSAN MOTOR CO., LTD.

发明人： Seiichiro Takahashi ,  Takashi Eguchi ,  Tomohiro Utagawa ,  Tomoyuki Mizuochi ,  Hisao Nobu ,  Kenji Sakakibara ,  Takahiro Ikeda ,  Masayuki Shimizu

IPC分类号： F16H61/662 ,  F16H9/12 ,  F16H59/20

CPC分类号： F16H61/66272 ,  F16H9/125 ,  F16H59/20 ,  F16H2061/66277

摘要： A transmission controller determines whether a shift is a kickdown, and when the shift is determined as the kickdown, the target line pressure is increased to a first target pressure corresponding to an input torque to a continuously variable transmission increased by the kickdown; the transmission controller then determines whether the line pressure has reached the first target pressure, and if determined that the line pressure has reached the first target pressure, the target line pressure is increased to a second target pressure higher than the first target pressure.

摘要翻译： 变速器控制器确定变速是否是减速，并且当换档被确定为减速时，目标行压力增加到对应于输入扭矩的第一目标压力，所述第一目标压力增加到降档时增加到无级变速器; 变速器控制器然后确定管路压力是否已经达到第一目标压力，并且如果确定管路压力已经达到第一目标压力，则目标管路压力增加到高于第一目标压力的第二目标压力。

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.

发明人： Seiichiro Takahashi ,  Takashi Eguchi ,  Takahiro Kobayashi

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。

公开(公告)号：US20150080156A1

公开(公告)日：2015-03-19

申请号：US14387461

申请日：2013-02-21

申请人： JATCO LTD. ,  NISSAN MOTOR CO., LTD.

发明人： Seiichiro Takahashi ,  Takashi Eguchi ,  Tomohiro Utagawa ,  Tomoyuki Mizuochi ,  Hisao Nobu ,  Kenji Sakakibara ,  Takahiro Ikeda ,  Masayuki Shimizu ,  Masami Sakai

IPC分类号： F16H9/12 ,  F16H61/12 ,  F16H61/662

CPC分类号： F16H9/125 ,  F16H61/0021 ,  F16H61/12 ,  F16H61/6624 ,  F16H61/66259 ,  F16H61/66272 ,  F16H2061/1208 ,  F16H2061/1288

摘要： A target primary pressure and a target secondary pressure are set based on a speed ratio, a target line pressure as a target value of a line pressure is set to be a value obtained by adding an offset amount, as a positive value, to either one having a higher value out of the target primary pressure and the target secondary pressure, in at least a cross-point region as a region where an absolute value of a deviation, obtained by subtracting the target primary pressure from the target secondary pressure, is smaller than a predetermined deviation, and a primary pressure, a secondary pressure, and the line pressure are controlled to be the target primary pressure, the target secondary pressure, and the target line pressure, respectively.

摘要翻译： 基于速比设定目标一次压力和目标二次压力，将作为线压力的目标值的目标线压力设定为通过将偏移量作为正值与任一个相加而获得的值 在至少作为通过从目标二次压力减去目标一次压力而得到的偏差的绝对值的区域中的至少一个交叉点区域中具有比目标一次压力和目标二次压力更高的值， 并且一次压力，二次压力和管路压力分别被控制为目标一次压力，目标二次压力和目标管路压力。

公开(公告)号：US10316967B2

公开(公告)日：2019-06-11

申请号：US15559472

申请日：2016-02-03

申请人： JATCO Ltd ,  NISSAN MOTOR CO., LTD.

发明人： Kosuke Abe ,  Shin Tsukamoto ,  Seiichiro Takahashi ,  Hiroyasu Tanaka

IPC分类号： F16H59/40 ,  F16H61/662 ,  F16H9/18 ,  F16H61/00 ,  F16H59/42 ,  F16H59/66 ,  F16H59/46 ,  F16H59/50

摘要： CVT controller has rotation speed sensors detecting driving and driven wheel rotation speed; driving and driven wheel speed difference detection unit detecting wheel speed difference Δvfr; and bad road judgment unit judging that road is bad road when Δvfr is first value Δvfr_br or greater. CVT controller further has first belt clamping force increase unit increasing belt clamping force in case where road is judged to be bad road, as compared with case where road is not judged to be bad road; vibration detection unit detecting vehicle speed vibration fvsp; and second belt clamping force increase unit increasing belt clamping force when Δvfr is second value Δvfr_psec or greater or when fvsp is third value fvsp_psec or greater in case where road is not judged to be bad road, as compared with case where Δvfr is less than Δvfr_psec and case where fvsp is less than fvsp_psec.

公开(公告)号：US09611933B2

公开(公告)日：2017-04-04

申请号：US14408372

申请日：2013-05-28

申请人： JATCO LTD ,  NISSAN MOTOR CO., LTD.

发明人： Yoshio Yasui ,  Tomoyuki Mizuochi ,  Seiichiro Takahashi ,  Takashi Eguchi ,  Yohei Shimokawa

IPC分类号： F16H61/662 ,  F16H61/70

CPC分类号： F16H61/66231 ,  F16H61/66259 ,  F16H61/702 ,  F16H2061/66218 ,  F16H2061/66295

摘要： A transmission controller searches a mechanical High, which is a minimum value of a possible speed ratio of the continuously variable transmission (CVT), based on an actual speed ratio, sets a control High lower than the mechanical High by a predetermined amount, and controls a speed ratio of the CVT by setting a minimum value of a speed ratio range of the CVT at the control High.

公开(公告)号：US09568099B2

公开(公告)日：2017-02-14

申请号：US15021141

申请日：2014-10-17

申请人： JATCO Ltd ,  NISSAN MOTOR CO., LTD.

发明人： Tomoaki Honma ,  Seiichiro Takahashi ,  Akito Suzuki ,  Masahiro Iriyama

IPC分类号： F16H61/662 ,  F16H59/14

CPC分类号： F16H61/66272 ,  F16H59/14

摘要： There is provided an oil pressure control device for a belt-type continuously variable transmission which includes two pulleys and a belt, wherein each of the two pulleys has a movable sheave which moves by oil pressure supplied to a hydraulic chamber, wherein the oil pressure control device calculates a request torque according to a running state, wherein when calculating the oil pressure which is supplied to the hydraulic chamber of the movable sheave on the basis of the request torque, the oil pressure control device reduces the request torque if the request torque is greater by a predetermined value or more than an actual input torque which is inputted to the belt-type continuously variable transmission. Accordingly, it is possible to provide an oil pressure control device for a belt-type continuously variable transmission with which undesirable vibration can be avoided by means of stable speed-ratio control.

摘要翻译： 提供了一种用于带式无级变速器的油压控制装置，其包括两个滑轮和皮带，其中两个滑轮中的每一个具有通过供应到液压室的油压而移动的可动滑轮，其中油压控制 装置根据运行状态计算请求扭矩，其中当根据请求扭矩计算供应到可动滑轮的液压室的油压时，如果请求扭矩为 大于输入到带式无级变速器的实际输入转矩的预定值或更大。 因此，可以提供一种用于带式无级变速器的油压控制装置，通过稳定的速比控制可以避免不希望的振动。

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.

发明人： Daisuke Aoki ,  Takahiro Kobayashi ,  Seiichiro Takahashi ,  Yuta Suzuki

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。

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。

公开(公告)号：US09995389B2

公开(公告)日：2018-06-12

申请号：US15525634

申请日：2015-10-23

申请人： JATCO Ltd ,  NISSAN MOTOR CO., LTD.

发明人： Seiichiro Takahashi ,  Tomoaki Honma ,  Yuta Suzuki ,  Itaru Shinohara

IPC分类号： F16H61/662 ,  F16H9/18 ,  F16H61/00

CPC分类号： F16H61/66272 ,  F16H9/18 ,  F16H61/0021 ,  F16H61/0202

摘要： A continuously variable transmission (100), wherein pressure equalization control is performed to make line pressure (PL) equal to secondary pressure (Psec) when prescribed start conditions are satisfied. During pressure equalization control, a secondary pressure indicated value (Psec_co) is raised by a prescribed amount (S10), then a line pressure indicated value (PL_co) is gradually decreased (S30). If determination is made that line pressure is the same as the secondary pressure after secondary actual pressure (Psec) is lowered (S40), then the line pressure is controlled so that the secondary actual pressure (Psec) becomes the secondary pressure indicated value (Psec_co) (S50). At the start of pressure equalization control, if the difference (ΔPsec) found by subtracting the secondary pressure indicated value from the secondary actual value is negative (S120), then a primary pressure indicated value is corrected on the basis of the difference (S130).