公开(公告)号：US10753466B2

公开(公告)日：2020-08-25

申请号：US15559029

申请日：2016-02-17

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

发明人： Haruka Ozono ,  Youji Itou ,  Kosuke Abe

IPC分类号： F16H61/12 ,  F16H9/18 ,  F16H61/662 ,  F16H59/40 ,  F16H59/42 ,  F16H61/00

摘要： In a transmission control device for controlling a transmission, a controller determines failure of a specific section. The controller variably controls line command pressure and secondary command pressure, and in a case where the failure is determined, fixes the line command pressure to a line pressure set value and the secondary command pressure to a secondary pressure set value. In a case where the failure is determined, the controller further starts a change in the secondary command pressure after start of a change in the line command pressure, and controls the secondary command pressure in such a manner that the secondary command pressure takes a first predetermined time to have the secondary pressure set value.

公开(公告)号：US11326689B2

公开(公告)日：2022-05-10

申请号：US16626364

申请日：2018-06-26

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

发明人： Keisuke Ichikawa ,  Tomoaki Kabe ,  Kosuke Abe

IPC分类号： F16H61/12 ,  F16H59/10 ,  F16H59/02 ,  F16H61/686

摘要： A shifter abnormality diagnosis device for a shifter used in an automatic transmission having a manual mode, the shifter including a first switch for outputting a signal corresponding to the position of a select lever and a second switch for outputting a signal corresponding to the position of the select lever if the select lever is located in at least one of an upshift range or a downshift range, wherein the abnormality diagnosis device is configured to perform an abnormality diagnosis of the second switch on the basis of an output signal of the second switch and prohibit the abnormality diagnosis of the second switch if it is determined that the select lever is not located in any one of forward ranges including the upshift range and the downshift range on the basis of an output signal of the first switch.

公开(公告)号：US10697536B2

公开(公告)日：2020-06-30

申请号：US15559027

申请日：2016-02-17

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

发明人： Masahiro Hamano ,  Youji Itou ,  Kosuke Abe ,  Haruka Ozono

IPC分类号： F16H61/12 ,  F16H9/18 ,  F16H61/662 ,  F16H61/00

摘要： In a transmission control device for controlling a transmission, a controller determines failure of a SOL corresponding to a hydraulic primary-pressure actuator. The controller variably controls line command pressure, and in a case where the failure is determined, continuously changes a speed ratio of a variator by variably controlling the line command pressure. The controller variably controls primary command pressure, and in a case where the failure is determined, fixes the primary command pressure to a primary pressure set value. The controller variably controls secondary command pressure, and in a case where the failure is determined, fixes the secondary command pressure to a secondary pressure set value.

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：US10119611B2

公开(公告)日：2018-11-06

申请号：US15121450

申请日：2015-02-17

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

发明人： Kiyofumi Sasaki ,  Youji Itou ,  Kosuke Abe

IPC分类号： F16H61/662 ,  F16H59/66 ,  F16H9/18 ,  F16H59/72 ,  F16H61/00

摘要： A control device for a continuously variable transmission of a vehicle includes: a shift control section being configured to perform a rough road corresponding control to increase the hydraulic pressure supplied to the secondary pulley to a value larger than the hydraulic pressure at a smooth road judgment at which the smooth road is judged, at a rough road judgment at which the rough road is judged, and thereby to increase the clamping force of the secondary pulley with respect to the circular belt member; and a rotation speed control section being configured to control the transmission gear ratio at the rough road judgment so that a rotation speed of the primary pulley becomes equal to or greater than a lower limit rotation speed which is previously set.

公开(公告)号：US11022190B2

公开(公告)日：2021-06-01

申请号：US16626366

申请日：2018-06-26

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

发明人： Keisuke Ichikawa ,  Tomoaki Kabe ,  Kosuke Abe

IPC分类号： F16H45/02 ,  F16D48/06 ,  F16H9/18 ,  F16H61/14

摘要： A vehicle control device for a vehicle with a drive source and an automatic transmission including a friction engaging element for transmitting a driving force of the drive source to drive wheels by being engaged by a hydraulic pressure, wherein the vehicle control device is configured to perform an abnormality diagnosis of a solenoid valve for adjusting a hydraulic pressure to be supplied to the friction engaging element on the basis of a slip amount of the friction engaging element, and prohibit the abnormality diagnosis of the solenoid valve if a hydraulic pressure upstream of the solenoid valve is below a predetermined hydraulic pressure at which the friction engaging element is engaged, the hydraulic pressure upstream of the solenoid being a source hydraulic pressure to be adjusted by the solenoid valve.

公开(公告)号：US10704680B2

公开(公告)日：2020-07-07

申请号：US15558962

申请日：2016-02-17

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

发明人： Masahiro Hamano ,  Youji Itou ,  Kosuke Abe ,  Haruka Ozono

IPC分类号： F16H61/12 ,  F16H9/18 ,  F16H61/662 ,  F16H61/00

摘要： In a transmission control device for controlling a transmission, a controller determines failure of a SOL corresponding to a hydraulic secondary-pressure actuator. The controller variably controls line command pressure, and in a case where the failure is determined, fixes the line command pressure to a line pressure set value. The controller variably controls primary command pressure, and in a case where the failure is determined, continuously changes a speed ratio of a variator by variably controlling the primary command pressure. The controller variably controls secondary command pressure, and in a case where the failure is determined, fixes the secondary command pressure to a secondary pressure set value.

公开(公告)号：US10549761B2

公开(公告)日：2020-02-04

申请号：US15758243

申请日：2016-08-26

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

发明人： Norihira Amano ,  Youji Itou ,  Kosuke Abe

IPC分类号： F16H61/12 ,  F16H59/72 ,  B60W50/038 ,  B60W10/04 ,  B60W10/107 ,  B60W30/19

摘要： An automatic transmission includes an oil temperature detecting unit configured to detect an oil temperature of the hydraulic oil, and a controller configured to perform the control of the speed ratio on a basis of the oil temperature obtained from the oil temperature detecting unit. The controller is configured such that if the controller has failed to obtain the oil temperature from the oil temperature detecting unit, the controller outputs a command to restrict an output from the driving force source, and such that if the controller has obtained the oil temperature from the oil temperature detecting unit again, the controller gradually cancels the command to restrict the output from the driving force source.

公开(公告)号：US10247304B2

公开(公告)日：2019-04-02

申请号：US15121453

申请日：2015-02-17

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

发明人： Kiyofumi Sasaki ,  Youji Itou ,  Kosuke Abe

IPC分类号： F16H59/66 ,  F16H61/662 ,  F16H61/00 ,  F16H9/18 ,  F16H59/72

摘要： A control device for a continuously variable transmission of a vehicle includes a shift control section being configured to perform a rough road corresponding control to increase the hydraulic pressure to a value larger than the hydraulic pressure at a smooth road judgment at which the smooth road is judged, at a rough road judgment at which the rough road is judged, and when a line-pressure-up control condition is satisfied at the rough road judgment, the line pressure control section being configured to increase the line pressure to be greater than the line pressure when the line-pressure-up control condition is not satisfied.

公开(公告)号：US10006542B2

公开(公告)日：2018-06-26

申请号：US15329726

申请日：2015-06-24

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

发明人： Kosuke Abe ,  Tomoyuki Suwabe ,  Shin Tsukamoto

IPC分类号： F16H59/46 ,  F16H61/662 ,  F16H59/42 ,  F16H59/48 ,  F16H61/12

CPC分类号： F16H61/66272 ,  F16H59/40 ,  F16H59/42 ,  F16H59/46 ,  F16H59/48 ,  F16H61/12 ,  F16H2059/405 ,  F16H2061/1284 ,  F16H2061/66277

摘要： A control device for a continuously variable transmission includes a wheel speed difference sensing section configured to sense a wheel speed difference between the driving wheel and the driven wheel from a detection value of the first rotation speed sensor and a detection value of the second rotation speed sensor; and a clamping force increasing section configured to increase a clamping force for sandwiching a belt of the continuously variable transmission by a pulley when the wheel speed difference becomes equal to or greater than a first predetermined value, relative to a case where the wheel speed difference is smaller than the first predetermined value.