公开(公告)号：US20180245688A1

公开(公告)日：2018-08-30

申请号：US15753705

申请日：2016-08-12

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

发明人： Toshimitsu ARAKI ,  Seiji KASAHARA ,  Hideshi WAKAYAMA ,  Kouji SAITOU ,  Hiroyasu TANAKA

IPC分类号： F16H61/14 ,  F16H59/14

CPC分类号： F16H61/143 ,  B60Y2300/421 ,  F16D48/02 ,  F16H59/14 ,  F16H59/42 ,  F16H59/44 ,  F16H2059/147 ,  F16H2061/0087 ,  F16H2061/146

摘要： In a vehicle on which a torque converter having a lock-up clutch is mounted between an engine and a transmission, a meet point learning controller is provided to perform learning control for obtaining a learning value based on information on a meet point at which the lock-up clutch starts torque transmission. The meet point learning controller estimates a LU transmission torque based on a difference between an engine torque signal value and a torque converter transmission torque when the lock-up clutch moves from a non-engaged state to an engaged state during traveling of the vehicle, and uses, as the meet point information, a meet point detection pressure at a time when the LU transmission torque estimated value is determined to have entered an upward trend.

公开(公告)号：US20180216729A1

公开(公告)日：2018-08-02

申请号：US15758140

申请日：2016-08-31

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

发明人： Toshimitsu ARAKI ,  Hideshi WAKAYAMA ,  Kouji SAITOU ,  Seiji KASAHARA ,  Tetsuya IZUMI

IPC分类号： F16H61/14 ,  F16D48/06

CPC分类号： F16H61/143 ,  B60Y2300/421 ,  F16D48/02 ,  F16D48/066 ,  F16D2500/1026 ,  F16D2500/10412 ,  F16D2500/1045 ,  F16D2500/1107 ,  F16D2500/30421 ,  F16D2500/3065 ,  F16D2500/50251 ,  F16H59/14 ,  F16H2059/147 ,  F16H2061/0087 ,  F16H2061/146

摘要： In a vehicle equipped with a torque converter 4 having a lock-up clutch (3), learning control for obtaining a learning value (L_n) on the basis of meet-point information, with which the lock-up clutch (3) initiates torque transmission, is carried out. When the lock-up clutch (3) experiences a transition to an engaged state during travel, a meet-point learning control unit (12c) calculates an LU transmission torque estimate on the basis of the difference between the engine torque (engine torque signal value Te) and the torque converter transmission torque (τ·Ne2). Excess clutch capacity is detected when the LU transmission torque estimate is greater than an excess capacity determination transmission torque threshold within a prescribed amount of time after an initial pressure (P_n) based on the learning value (L_n) is instructed. When excess clutch capacity is detected, a learning value correction that reduces the learning value (L_n) is carried out.

公开(公告)号：US20180172149A1

公开(公告)日：2018-06-21

申请号：US15575960

申请日：2016-05-18

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

发明人： Masayuki MIYAZONO ,  Hideshi WAKAYAMA ,  Kyounggon CHOI

IPC分类号： F16H61/662 ,  F16H61/02

CPC分类号： F16H61/662 ,  F16H59/18 ,  F16H59/22 ,  F16H59/42 ,  F16H61/0204 ,  F16H61/0213 ,  F16H61/66259 ,  F16H2059/366 ,  F16H2061/0234

摘要： The present invention relates to a control device and a control method for a vehicle in which a lockup clutch is disengaged when a rotation speed of an engine falls below a disengagement rotation speed. The device/method changes a speed ratio of a variator on the basis of a shifting map in which a primary pulley rotation speed on a coast line is set higher than a primary pulley rotation speed on a drive line and sets a target input rotation speed of the variator to a predetermined target input rotation speed higher than the primary pulley rotation speed on the drive line when an operation of an accelerator pedal is performed such that an accelerator pedal opening falls to a first predetermined opening or less. As a result, the present invention can suppress drop of fuel efficiency of the engine caused by disengagement of the lockup clutch which is a friction engagement element.

公开(公告)号：US20160097450A1

公开(公告)日：2016-04-07

申请号：US14893252

申请日：2014-05-20

申请人： JATCO LTD

发明人： Masashi SATO ,  Hideshi WAKAYAMA ,  Mamiko INOUE ,  Kousuke WAKU ,  Hyuk PARK

IPC分类号： F16H61/662 ,  F16H37/02

CPC分类号： F16H61/66231 ,  F16H37/021 ,  F16H37/022 ,  F16H61/66259 ,  F16H61/702 ,  F16H2037/023 ,  F16H2061/6615

摘要： A transmission including a variator capable of continuously changing a speed ratio, a stepped transmission mechanism arranged in series with the variator and in which a gear position is switched and a shilling control unit executing stepped shifting repeatedly performing a shifting suppression phase and an upshift phase when a stepped upshift shifting condition is satisfied is provided, and the shifting control unit completes a change from an n-th gear position of the stepped transmission mechanism to an n+1 gear position if the stepped transmission mechanism is at the n-th gear position before the through speed ratio reaches a Highest speed ratio of the variator when the stepped shifting is performed.

摘要翻译： 一种变速器，其包括能够连续变速的变速器，与变速器串联布置的齿轮位置切换的阶梯式变速机构，以及先进式步进变速器执行变速抑制阶段和升挡阶段的先令式变速机构， 提供了升档换档条件，并且如果阶梯式变速机构处于第n档位，变速控制单元完成从阶梯式变速机构的第n档位到n + 1档位的变化 在通过变速比达到阶梯式变速时的变速器的最高变速比之前。

公开(公告)号：US20180245689A1

公开(公告)日：2018-08-30

申请号：US15757455

申请日：2016-08-31

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

发明人： Toshimitsu ARAKI ,  Seiji KASAHARA ,  Hideshi WAKAYAMA ,  Hiroyasu TANAKA

IPC分类号： F16H61/14 ,  F16D48/06

摘要： In a vehicle equipped with a torque converter (4) having a lock-up clutch (3), learning control for obtaining a learning value (L_n) on the basis of meet-point information, with which the lock-up clutch (3) initiates torque transmission, is carried out. After acquiring the current learning detection value (M_n), a meet-point learning control unit (12c) calculates the current detection error (E_n) on the basis of the difference between the current learning detection value (M_n) and the previous learning value (L_(n−1)) that is stored. When the current and previous detection errors (E_n) and (E_n−1) have the same plus/minus sign, the current learning value correction amount is set to a larger value if the absolute value |(E_n−1)| of the previous detection error (E_n−1) is large than if the absolute value |(E_n−1)| is small. The sum of the previous learning value (L_(n−1)) and the current learning value correction amount is set as the present learning value (L_n).

公开(公告)号：US20170008524A1

公开(公告)日：2017-01-12

申请号：US15121131

申请日：2015-02-25

申请人： JATCO Ltd

发明人： Kunihiro TAKAHASHI ,  Yoshinobu KAWAMOTO ,  Hideshi WAKAYAMA

IPC分类号： B60W30/186 ,  B60W10/06 ,  B60W10/02 ,  B60W10/107

CPC分类号： B60W30/186 ,  B60W10/02 ,  B60W10/06 ,  B60W10/107 ,  B60W50/038 ,  B60W2710/027 ,  B60W2710/1022 ,  B60W2710/1044 ,  F16H61/02 ,  F16H61/12 ,  F16H61/66272 ,  F16H2061/0488

摘要： A vehicle control device calculates a target line pressure based on an instructed torque capacity of a friction engaging element and a belt capacity when the friction engaging element is determined as not engaging. Belt capacity is calculated using an input torque of a continuously variable transmission mechanism. The device calculates torque down in a driving source based on an upper limit line pressure when the calculated target line pressure exceeds such line pressure. A limit torque capacity of the friction engaging element is calculated using the input torque and a belt capacity when the friction engaging element is determined as not engaging. The belt capacity is calculated using an actual line pressure. The device restrains a slip between pulleys and a power transmitting member using the target line pressure, the torque down, and the limit torque capacity when the friction engaging element is determined as not engaging.

摘要翻译： 车辆控制装置基于摩擦接合元件的指示扭矩容量和当摩擦接合元件被确定为不接合时的带容量来计算目标线压力。 使用无级变速机构的输入转矩来计算输送带容量。 当所计算的目标线路压力超过该线路压力时，该装置基于上限线路压力来计算驱动源中的扭矩降低。 当摩擦接合元件被确定为不接合时，使用输入扭矩和带的容量来计算摩擦接合元件的极限转矩容量。 皮带容量使用实际线压力计算。 当摩擦接合元件被确定为不接合时，该装置使用目标线压力，扭矩降低和极限转矩容量来限制滑轮和动力传递部件之间的滑动。

公开(公告)号：US20160230884A1

公开(公告)日：2016-08-11

申请号：US15022368

申请日：2014-09-24

申请人： JATCO LTD

发明人： Masayuki MIYAZONO ,  Hideshi WAKAYAMA

IPC分类号： F16H61/20 ,  F16H37/02 ,  F16H61/00

CPC分类号： F16H61/20 ,  F16H37/021 ,  F16H61/0021 ,  F16H61/0059 ,  F16H61/702 ,  F16H2037/023 ,  F16H2059/663 ,  F16H2061/205 ,  F16H2312/04

摘要： A control device (12) for a stepped transmission mechanism is configured to perform an interlock by engaging a first clutch (32) and increasing hydraulic pressure of a second clutch (33) up to a first predetermined pressure (P1) such that an output shaft of the transmission mechanism is fixed, after an idle-stop condition including at least a requirement that a vehicle is stationary was satisfied and before a stop of an engine (1). The control device includes a gradient detecting means (12a, 47) that detects a gradient (R) of a road surface on which the vehicle is stationary; and a hydraulic control means (12c) that performs a slipping interlock by reducing the hydraulic pressure to a second predetermined pressure (P2), if the gradient R detected by the gradient detecting means is lower than or equal to a predetermined value (RTH) during the interlock and before the stop of the engine.

摘要翻译： 用于阶梯式传动机构的控制装置（12）被构造成通过使第一离合器（32）接合并使第二离合器（33）的液压升高到第一预定压力（P1）来执行互锁，使得输出轴 在包括至少要求车辆静止的怠速停止条件满足之后和发动机（1）的停止之前固定传动机构。 控制装置包括：梯度检测装置（12a，47），其检测车辆静止的路面的坡度（R）; 以及液压控制装置（12c），如果由梯度检测装置检测到的梯度R低于或等于预定值（RTH），则通过将液压降低到第二预定压力（P2）来执行滑动互锁 联锁和发动机停止之前。

公开(公告)号：US20160215879A1

公开(公告)日：2016-07-28

申请号：US15021111

申请日：2014-09-16

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

发明人： Mamiko INOUE ,  Hideshi WAKAYAMA

IPC分类号： F16H61/70 ,  F16H37/02

CPC分类号： F16H61/702 ,  F16H37/021 ,  F16H61/66259 ,  F16H2037/023 ,  F16H2061/66204

摘要： In a control apparatus for an automatic transmission including a continuously variable transmission mechanism continuously modifying speed ratio and a stepped transmission mechanism that is disposed on a downstream side of the continuously variable transmission mechanism and being switched between a plurality of gear positions by engaging and disengaging a plurality of frictional engagement elements, the control apparatus comprises a control unit that performs a coordinated shift by shifting the stepped transmission mechanism and simultaneously shifting the continuously variable transmission mechanism in an opposite direction to a shift direction of the stepped transmission mechanism in order to suppress variation in a through speed ratio, which is an overall speed ratio of the automatic transmission, when the stepped transmission mechanism is upshifted and the control unit predicts, on the basis of an increase in an accelerator opening, that judder will occur in the frictional engagement element during the upshift, the control unit reduces a shift speed of the continuously variable transmission mechanism while shudder is predicted to occur in the frictional engagement element in comparison with a shift speed of the continuously variable transmission mechanism during the coordinated shift, the coordinated shift being executed at an accelerator opening corresponding to the increased accelerator opening.

摘要翻译： 在一种包括连续变速比的无级变速机构的自动变速器的控制装置和设置在无级变速机构的下游侧的阶梯式变速机构，并且通过接合和分离而在多个档位之间切换 多个摩擦接合元件，控制装置包括控制单元，其通过移动阶梯式传动机构进行协调移动，并且同时将无级变速传动机构沿与阶梯式传动机构的换档方向相反的方向移动，以便抑制变化 在作为自动变速器的整体变速比的直通速度比中，当阶梯式变速机构被升档并且控制单元基于加速器开度的增加来预测在摩擦接合中将发生抖动时 在升档期间，控制单元降低无级变速器机构的换挡速度，同时与协调换挡期间的无级变速机构的换档速度相比，摩擦接合元件发生颤抖，协调移位 在对应于增加的加速器开度的加速器开度处执行。

公开(公告)号：US20180180175A1

公开(公告)日：2018-06-28

申请号：US15738716

申请日：2016-06-13

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

发明人： Mamiko INOUE ,  Hideshi WAKAYAMA

IPC分类号： F16H61/04 ,  F16H61/70 ,  F16H61/662 ,  F16H37/02

CPC分类号： F16H61/04 ,  F16H3/66 ,  F16H9/18 ,  F16H37/022 ,  F16H61/66 ,  F16H61/662 ,  F16H61/66259 ,  F16H61/702 ,  F16H2037/023 ,  F16H2037/026 ,  F16H2061/6614 ,  F16H2200/0034 ,  F16H2200/2038

摘要： A transmission includes a sub-transmission mechanism, a variator having lower shift responsiveness than the sub-transmission mechanism, and a controller configured to carry out a coordinated shift for changing a speed ratio of the variator in a direction opposite to a changing direction of a speed ratio of the sub-transmission mechanism as the sub-transmission mechanism is shifted so that a through speed ratio reaches a target through speed ratio. The controller sets a target speed ratio of the sub-transmission mechanism on the basis of the target through speed ratio and an actual speed ratio of the variator in carrying out the coordinated shift.

公开(公告)号：US20180015928A1

公开(公告)日：2018-01-18

申请号：US15547855

申请日：2015-12-16

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

发明人： Takashi KOGUCHI ,  Sho OKUTANI ,  Makoto KOMATSU ,  Toshiaki NODA ,  Takuichiro INOUE ,  Yuuji NAGASE ,  Hiroyasu TANAKA ,  Hideshi WAKAYAMA

IPC分类号： B60W30/19 ,  F16H61/04 ,  B60W10/02 ,  B60W10/10 ,  F16H61/02 ,  F16H59/36 ,  F16H59/14 ,  F16H59/18 ,  F16H59/44

CPC分类号： B60W30/19 ,  B60W10/026 ,  B60W10/10 ,  B60W2510/0638 ,  B60W2510/0661 ,  B60W2520/10 ,  B60W2540/10 ,  B60W2540/103 ,  B60W2540/106 ,  B60W2710/024 ,  B60W2710/1005 ,  F16H59/141 ,  F16H59/18 ,  F16H59/20 ,  F16H59/42 ,  F16H59/44 ,  F16H61/0213 ,  F16H61/04 ,  F16H61/14 ,  F16H61/16 ,  F16H61/684 ,  F16H2059/147 ,  F16H2059/183 ,  F16H2059/366

摘要： An automatic transmission control device implements a downshift by disengagement of a clutch that is engaged in a gear position before the downshift. It is determined whether an engine state is in a predetermined region in which a change of an engine torque per a change of an accelerator pedal opening is smaller than that in another region, and the engine torque is within a predetermined range, and an engine rotational speed is within a predetermined range. It is determined whether an operating state is in a predetermined state of accelerator operation in which the accelerator pedal opening is larger than a predetermined value, and an accelerator pedal opening change rate has an absolute value smaller than a predetermined value. The downshift is inhibited in response to determination that the engine state is in the predetermined region and the operating state is in the predetermined state of accelerator operation.