公开(公告)号：US20170211691A1

公开(公告)日：2017-07-27

申请号：US15329706

申请日：2015-06-03

Applicant: JATCO Ltd ,  NISSAN MOTOR CO., LTD.

Inventor： Kunihiro TAKAHASHI ,  Tetsuya IZUMI ,  Masayuki MIYAZONO ,  Takuichiro INOUE ,  Masashi SUWABE ,  Makoto KOMATSU ,  Yuji OKAMOTO

IPC: F16H61/12 ,  F16H9/18 ,  F16H61/662

CPC classification number: F16H61/12 ,  F16H9/18 ,  F16H61/662 ,  F16H61/702 ,  F16H2061/1264

Abstract: A transmission controller increases hydraulic pressure supplied to a secondary pulley and decreases hydraulic pressure supplied to a primary pulley to shift a variator to a mechanical Low speed ratio during the hydraulic pressure supplied to the primary pulley and the secondary pulley vibrates. The mechanical Low speed ratio is a speed ratio where a groove width of the primary pulley has a maximum value possible to be employed in structure of the primary pulley.

公开(公告)号：US20160223079A1

公开(公告)日：2016-08-04

申请号：US14917712

申请日：2014-09-24

Applicant: JATCO LTD ,  NISSAN MOTOR CO., LTD

Inventor： Seiichiro TAKAHASHI ,  Takuichiro INOUE ,  Koutarou TAGAMI ,  Fumito SHINOHARA ,  Hiroyuki SUZUKI ,  Yuji OKAMOTO ,  Takashi NOBUKAWA

IPC: F16H61/70 ,  F16H37/02

CPC classification number: F16H61/70 ,  B60W10/06 ,  B60W10/107 ,  B60W10/111 ,  F16H37/021 ,  F16H61/04 ,  F16H61/662 ,  F16H61/702 ,  F16H63/50 ,  F16H2061/0492 ,  F16H2063/508

Abstract: Disclosed is a control device for a continuously variable transmission (4) that has, as forward speed change stages, a first speed change stage (32) and a second speed change stage (33).The control device comprises a coordinated speed change means (12a) that carries out a coordinated speed changing in such a manner that when the speed change stage of an auxiliary transmission mechanism (30) is about to be changed, a speed change speed of the auxiliary transmission mechanism (30) is coordinated with a variator (20) and the variator (20) is controlled to carry out a speed change in a direction opposite to that of the auxiliary transmission mechanism (30) while carrying out the speed change operation of the auxiliary transmission mechanism (30), and a torque control means (12b) that carries out a torque regulating control during the coordinated speed changing under up-shifting by the coordinated speed change means, the torque regulating control being a control for effecting a torque-up operation to a driving source (1) after effecting a torque-down operation to the driving source and including a timing through which a starting time point of a drive force gap caused by the coordinated speed changing is advanced and a timing through which an ending time point of the drive force gap is delayed.

Abstract translation: 公开了一种用于无级变速器（4）的控制装置，其具有作为前进变速级的第一变速级（32）和第二变速级（33）。 控制装置包括协同变速装置（12a），其以这样的方式执行协调的速度变化，即当辅助变速机构（30）的变速级即将被改变时，辅助变速装置 传动机构（30）与变速器（20）协调，并且变换器（20）被控制为在与辅助变速机构（30）的方向相反的方向上执行变速，同时执行变速器 辅助传动机构30以及在通过协同变速装置进行上变换的协调变速时进行转矩调节控制的转矩控制机构12b，作为转矩调节装置的控制， 在对驱动源进行转矩下降操作之后，向驱动源（1）提供上升操作，并且包括由th引起的驱动力间隙的起动时间点的定时 e协调的速度变化提前，驱动力间隙的结束时间点延迟的时间。

公开(公告)号：US20170211697A1

公开(公告)日：2017-07-27

申请号：US15329718

申请日：2015-06-03

Applicant: JATCO Ltd

Inventor： Masashi SUWABE ,  Tetsuya IZUMI ,  Masayuki MIYAZONO ,  Takuichiro INOUE ,  Kunihiro TAKAHASHI ,  Makoto KOMATSU ,  Yuji OKAMOTO

IPC: F16H61/662 ,  F16H61/02

CPC classification number: F16H61/662 ,  F16H61/00 ,  F16H61/02 ,  F16H61/12 ,  F16H61/66 ,  F16H61/66259 ,  F16H61/702 ,  F16H2037/023

Abstract: A transmission controller increases hydraulic pressure supplied to a secondary pulley and decreases hydraulic pressure supplied to a primary pulley to shift a variator to a mechanical Low speed ratio when the hydraulic pressure supplied to the primary pulley and the secondary pulley vibrates. The transmission controller shifts the variator from the mechanical Low speed ratio to a High side when a sub-transmission mechanism is downshifted during controlling a speed ratio of the variator at the mechanical Low speed ratio.

公开(公告)号：US20190040950A1

公开(公告)日：2019-02-07

申请号：US16073127

申请日：2017-01-31

Applicant: JATCO Ltd ,  NISSAN MOTOR CO., LTD.

Inventor： Takahiro YAMADA ,  Kunihiro TAKAHASHI ,  Syunsuke IWAMOTO ,  Yuji OKAMOTO ,  Toshiaki NODA

IPC: F16H61/14

Abstract: A lockup control device for a vehicle includes: a torque converter; a lockup control section configured to increase a lockup pressure difference command to an initial pressure difference when a lockup engagement condition is satisfied in a disengagement state of the lockup clutch, and then to increase the lockup pressure difference command by a ramp pressure difference by a predetermined gradient, the lockup control section being configured to determine a ramp start condition by which the lockup pressure difference command is switched from the initial pressure difference to the ramp pressure difference, based on a speed ratio which is a ratio of input and output rotation speeds of the torque converter.

公开(公告)号：US20190032778A1

公开(公告)日：2019-01-31

申请号：US16073235

申请日：2017-01-31

Applicant: JATCO Ltd ,  NISSAN MOTOR CO., LTD.

Inventor： Takahiro YAMADA ,  Kunihiro TAKAHASHI ,  Syunsuke IWAMOTO ,  Yuji OKAMOTO ,  Toshiaki NODA

IPC: F16H61/14

Abstract: A lockup control device for a vehicle includes: a torque converter, and a lockup control configured to increase a lockup pressure difference command to an initial pressure difference, when a turbine rotation speed variation amount of the torque converter becomes smaller than a predetermined value during a ramp control in which the lockup pressure difference command is increased by a ramp pressure difference, the lockup control section being configured to switch to a second increase gradient having an increase gradient lower than a first increase gradient of the ramp pressure difference when the turbine rotation speed variation amount is equal to or greater than the predetermined value.