-
公开(公告)号:US12092205B2
公开(公告)日:2024-09-17
申请号:US18264306
申请日:2022-02-07
申请人: JATCO Ltd , NISSAN MOTOR CO., LTD.
发明人: Shou Okutani , Masahiro Kusuda , Tomohiro Utagawa , Hironori Miyaishi , Seiichirou Takahashi , Yusuke Nakano , Hiromu Soya , Jumpei Hayakawa , Makoto Oguri
IPC分类号: F16H59/42 , F16H59/46 , F16H61/662 , F16H59/68 , F16H59/70
CPC分类号: F16H59/46 , F16H59/42 , F16H61/662 , F16H2059/683 , F16H2059/704 , F16H2061/66277
摘要: A continuously variable transmission includes: a first pulley and a second pulley each including a fixed pulley and a movable pulley; and an endless member wound around the first pulley and the second pulley, wherein the continuously variable transmission continuously changes a speed ratio by controlling a thrust of the movable pulley with a hydraulic pressure, the thrust of the movable pulley is made smaller as a rotation speed of the first pulley decreases, and when the rotation speed of the first pulley is lower than a predetermined rotation speed, the thrust of the movable pulley in a case where the speed ratio is on a Low side of the predetermined speed ratio is not made smaller than the thrust of the movable pulley in a case where the speed ratio is on a High side of the predetermined speed ratio.
-
公开(公告)号:US11597472B2
公开(公告)日:2023-03-07
申请号:US17402143
申请日:2021-08-13
发明人: Kengo Ueda , Hiroyuki Watanabe , Kazuki Arima
IPC分类号: F16H59/46 , B62M11/06 , F16H61/688 , B62M25/08 , F16H63/18 , F16H3/00 , F16H61/662
摘要: A control device of a gear transmission-equipped vehicle includes a power controller that starts power reduction control when it is determined that a start condition is satisfied, the power reduction control being control of reducing power transmitted from a driving source to a gear transmission. The start condition includes: a condition that a detection value of a gear position sensor that detects a current gear position of the gear transmission falls within a transition region between engagement regions corresponding to respective gear positions; and a condition that a speed difference obtained by subtracting a rotational speed of an output shaft of the gear transmission from a rotational speed of an input shaft of the gear transmission is a threshold or more.
-
公开(公告)号:US11486476B2
公开(公告)日:2022-11-01
申请号:US17218862
申请日:2021-03-31
发明人: Hirotaka Komura
摘要: An extension/contraction mechanism in which an extension/contraction part is able to turn is provided. An extension/contraction mechanism according to one aspect of the present disclosure includes a first drive source connected to a sending/pulling part so as to be able to transmit a drive force, and a second drive source connected to the sending/pulling part and a turning part that rotatably supports the sending/pulling part so as to be able to transmit a drive force via a gear group. When a rotational speed transmitted to the sending/pulling part to rotate the sending/pulling part by the first drive source is equal to a rotational speed transmitted to the sending/pulling part to rotate the sending/pulling part by the second drive source, an extension/contraction part turns via the turning part. When the above rotational speeds are different from each other, the extension/contraction part is extended or contracted.
-
公开(公告)号:US11365805B2
公开(公告)日:2022-06-21
申请号:US16636495
申请日:2018-07-30
申请人: JATCO Ltd , NISSAN MOTOR CO., LTD.
发明人: Seiya Kitagawa , Tomoaki Honma
IPC分类号: F16H59/18 , F16H59/46 , F16H61/664 , F16H59/40 , F16H59/14
摘要: A vehicle includes a transmission having a variator and a sub-transmission mechanism, a controller serving as a shift control unit adapted to, as shift of the transmission, shift the sub-transmission mechanism and the variator so that a through speed ratio becomes a target speed ratio, and an engine serving as a torque increasing portion adapted to increase a torque inputted to the transmission in association with the shift of the transmission. The controller has a torque setting unit adapted to make a magnitude of an inclination larger as an increase amount of the engine rotation speed in association with the shift of the transmission is larger.
-
公开(公告)号:US11021144B2
公开(公告)日:2021-06-01
申请号:US16577305
申请日:2019-09-20
发明人: Jeffrey M. David , Travis J. Miller
IPC分类号: B60W10/105 , B60W10/115 , F16H13/08 , F16H13/14 , F16H61/664 , F16H15/40 , F16H15/50 , F16H59/46 , F16H59/38
摘要: A method of controlling a continuously variable electric drivetrain (CVED) including a high ratio traction drive transmission and at least one of a first motor-generator and a second motor-generator is disclosed. The method includes the steps of receiving a an output speed, determining a kinematic output speed, and determining a slip state of the high ratio traction drive transmission based on a comparison of the output speed to the kinematic output speed.
-
公开(公告)号:US10962097B2
公开(公告)日:2021-03-30
申请号:US16648680
申请日:2018-09-13
摘要: A limited slip differential (LSD) transfers a torque from an engine to left and right wheels of a vehicle. A current angle of a steering device is determined. Rotational speeds of 5 the left and right driven wheels are also determined. A current wheel slip of is calculated as a difference between the rotational speeds of the left and right wheels. Maximum and minimum allowed wheel slips are calculated as a function of the current steering angle. The LSD is controlled so that the current wheel slip stays in a range between the maximum and minimum allowed wheel slips. To this end, the LSD is loaded if the wheel slip falls outside of the range 0 between the maximum and minimum allowed wheel slips.
-
公开(公告)号:US20200307601A1
公开(公告)日:2020-10-01
申请号:US16531627
申请日:2019-08-05
发明人: Sung Hyun Cho , Su Hwan Lee
IPC分类号: B60W30/19 , B60W10/02 , B60W10/113 , F16H61/04 , F16H61/682 , F16H59/46
摘要: A shift control method of a vehicle with a dual clutch transmission (DCT) may include: a first preparing step of, by a controller, controlling a torque of an N-th stage clutch to a predetermined minimum torque and increasing a torque of an N−1-th stage clutch to a predetermined standby torque; a first handover step of releasing the torque of the N-th stage clutch and increasing the torque of the N−1-th stage clutch; a gear changing step of releasing an N-th stage gear and then initiating an engagement of an N−2-th stage gear; a synchronization maintaining step of maintaining a synchronized state by adjusting the torque of the N−1-th stage clutch; a second preparing step of increasing the torque of the N−2-th stage clutch to the standby torque; and a second handover step of releasing the torque of the N−1-th clutch and increasing the torque of the N−2-th stage clutch.
-
公开(公告)号:US20200248802A1
公开(公告)日:2020-08-06
申请号:US16636495
申请日:2018-07-30
申请人: JATCO Ltd , NISSAN MOTOR CO., LTD.
发明人: Seiya KITAGAWA , Tomoaki HONMA
IPC分类号: F16H61/664 , F16H59/18 , F16H59/46 , F16H59/40
摘要: A vehicle includes a transmission having a variator and a sub-transmission mechanism, a controller serving as a shift control unit adapted to, as shift of the transmission, shift the sub-transmission mechanism and the variator so that a through speed ratio becomes a target speed ratio, and an engine serving as a torque increasing portion adapted to increase a torque inputted to the transmission in association with the shift of the transmission. The controller has a torque setting unit adapted to make a magnitude of an inclination larger as an increase amount of the engine rotation speed in association with the shift of the transmission is larger.
-
公开(公告)号:US10436602B2
公开(公告)日:2019-10-08
申请号:US15528767
申请日:2015-11-26
发明人: Paul Roeland Verheijen , Jasper Johannes Anthonius Pauwelussen , Christoph Ebert , Steffen Orlowsky , Marco Leupold , Lars Dietzel
IPC分类号: G01P1/00 , G01C21/36 , B60R16/023 , B60W40/09 , G07C5/00 , G07C5/08 , B60K31/00 , F16H59/44 , F16H59/46 , F16H61/02 , B60W50/14 , B60W30/18 , G08G1/01 , G07C5/02 , G07C5/06 , G08G1/0962 , G08G1/0967 , G08G1/0968 , G08G1/052 , F16H63/42 , B60W50/00 , F16H59/70 , F16H59/36
摘要: A method and apparatus for providing an indication to a driver of a geared vehicle that the vehicle is not in an optimal gear is disclosed. The method comprises determining a current gear of the vehicle and determining a current speed of a drive unit of the vehicle. An indication is then provided to the driver of the vehicle that the vehicle is not in an optimal gear when: (i) the determined current speed of the drive unit is greater than a predetermined threshold; and (ii) the determined current gear of the vehicle is less than a maximum gear of the vehicle. A method and apparatus is also disclosed for determining a score indicative of the amount of time during a journey on a road network that a geared vehicle is driven in an optimal gear.
-
公开(公告)号:US20180372220A1
公开(公告)日:2018-12-27
申请号:US15563028
申请日:2016-02-22
申请人: JATCO Ltd , NISSAN MOTOR CO., LTD.
发明人: Kohei KAMIYA , Tomoaki HONMA , Yasuhiro ENDO
IPC分类号: F16H61/662 , F16H61/14 , F16H59/42 , F16H59/18 , F16H59/46
摘要: A control device for an automatic transmission includes: a transmission gear ratio control section configured to control the transmission gear ratio so that a rotation speed of the output element rapidly becomes closer to a rotation speed of the internal combustion engine, a first engagement control section configured to perform a first engagement control to be brought to the full engagement state after the rotation of the internal combustion engine is increased in the slip engagement state while a torque transmission capacity of the lockup clutch is increased when the lockup clutch is switched through the slip engagement state to the full engagement state by an ON operation of an accelerator of the vehicle, the transmission gear ratio control being prohibited during the first engagement control by the first engagement control section.
-
-
-
-
-
-
-
-
-