公开(公告)号：US20200116215A1

公开(公告)日：2020-04-16

申请号：US16560594

申请日：2019-09-04

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Naonari SATOH ,  Atsushi AYABE ,  Kunio HATTORI ,  Yusuke OHGATA ,  Shinji OITA

IPC: F16D48/06 ,  F16D41/04 ,  F16D47/04 ,  F16H37/02

Abstract: A power transmission device for a vehicle includes a first power transmission path that is provided between an engine and a driving wheel, a second power transmission path that is provided in parallel with the first power transmission path, and an electronic control unit. The electronic control unit changes over a secondary clutch to a one-way mode while releasing a first clutch, when a request is made to change over a power transmission path between the engine and the driving wheel from the first power transmission path to the second power transmission path at a time of a predetermined state. The electronic control unit is configured to engage a second clutch when the secondary clutch is changed over to the one-way mode.

公开(公告)号：US20160236686A1

公开(公告)日：2016-08-18

申请号：US15041261

申请日：2016-02-11

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Kunio HATTORI ,  Wataru MATSUBARA

IPC: B60W30/188 ,  F16H61/662 ,  B60W30/19 ,  B60W10/04 ,  B60W10/107

CPC classification number: B60W30/188 ,  B60W10/04 ,  B60W10/107 ,  B60W30/19 ,  B60W2510/1005 ,  B60W2560/00 ,  B60W2710/105 ,  F16H61/662 ,  F16H2059/147 ,  F16H2061/0015 ,  F16H2063/504

Abstract: In correcting a throttle opening degree for speed ratio control in accordance with an auxiliary load torque, when the throttle opening degree for speed ratio control is corrected in an increasing manner such that an engine rotational speed rises, a smoothing process of changes in a throttle opening degree correction amount is executed. When the throttle opening degree for speed ratio control is corrected in a decreasing manner such that the engine rotational speed falls, the aforementioned smoothing process is not executed.

Abstract translation: 在根据辅助负载转矩校正用于变速比控制的节气门开度时，当以增加的方式校正速度比控制的节气门开度以使发动机转速上升时，节气门开度的变化的平滑化处理 执行度校正量。 当以减小的方式校正速比控制的节气门开度以使发动机转速下降时，不执行上述平滑处理。

公开(公告)号：US20190271393A1

公开(公告)日：2019-09-05

申请号：US16291305

申请日：2019-03-04

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Kunio HATTORI ,  Akihide ITO ,  Takuro SHIMAZU

IPC: F16H61/662

Abstract: A control apparatus for a vehicle drive-force transmitting apparatus including a continuously-variable transmission mechanism whose gear ratio is calculated based on a detected value of an input rotational speed of the transmission mechanism and a processed output-rotational-speed value that is a detected value of an output rotational speed of the transmission mechanism subjected to a filter processing. Updating the gear ratio of the transmission mechanism is inhibited (i) when the processed output-rotational-speed value is in a low rotational speed range with an absolute value of a rate of change of the processed output-rotational-speed value being not smaller than a given value, and also (ii) when the processed output-rotational-speed value is in the low rotational speed range with the absolute value of the rate of change of the processed output-rotational-speed value being smaller than the given value, if a certain operation that increases the absolute value is being executed.

公开(公告)号：US20170037965A1

公开(公告)日：2017-02-09

申请号：US15303634

申请日：2015-04-09

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Daisuke INOUE ,  Kunio HATTORI ,  Hiroki KONDO ,  Kenji MATSUO ,  Mitsuhiro FUKAO

IPC: F16H61/662 ,  F16H37/02

CPC classification number: F16H61/66259 ,  F16H37/022 ,  F16H59/42 ,  F16H59/48 ,  F16H2037/026 ,  F16H2059/425

Abstract: When a power transmission path of a power transmission system is set to a second power transmission path, a continuously variable transmission is controlled at a speed ratio (γ) that provides a higher vehicle speed in the case where an input shaft angular acceleration (dωi/dt) is small than in the case where the input shaft angular acceleration (dωi/dt) is large. Therefore, it is possible to control the speed ratio (γ) of the continuously variable transmission to a speed ratio (γ) that reflects an inertial loss (Tli) of the continuously variable transmission. The inertial loss (Tli) changes with the input shaft angular acceleration (dωi/dt). Thus, in a vehicle in which the continuously variable transmission and a gear mechanism are provided in parallel with each other between an input shaft and an output shaft, it is possible to appropriately reduce a loss of the idling continuously variable transmission.

Abstract translation: 在动力传递系统的动力传递路径被设定为第二动力传递路径的情况下，在输入轴角加速度（dωi/ s）的情况下，以提供较高车速的速度比（γ）来控制无级变速器， dt）小于输入轴角加速度（dωi/ dt）大的情况。 因此，可以将无级变速器的变速比（γ）控制为反映无级变速器的惯性损耗（Tli）的变速比（γ）。 惯性损耗（Tli）随输入轴角加速度（dωi/ dt）而变化。 因此，在无级变速器和齿轮机构在输入轴和输出轴之间彼此平行地设置的车辆中，可以适当地减少怠速无级变速器的损失。

公开(公告)号：US20210116022A1

公开(公告)日：2021-04-22

申请号：US16939666

申请日：2020-07-27

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Atsushi AYABE ,  Kunio HATTORI ,  Jun AMANO ,  Asami FUJITA

IPC: F16H61/70 ,  F16H37/02

Abstract: When a rotation speed difference between rotary members of a mode switching clutch is equal to or less than a predetermined value during travel in a belt travel mode, there is a likelihood that the mode switching clutch would be secured to a lock mode in which power operating in two directions is transmitted. At this time, since switching to a gear travel mode is prohibited, it is possible to curb occurrence of a shock when power is simultaneously transmitted via a first power transmission path and a second power transmission path in a transition period of switching to the gear travel mode.

公开(公告)号：US20190316674A1

公开(公告)日：2019-10-17

申请号：US16374797

申请日：2019-04-04

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Kunio HATTORI ,  Taichi WASHIO ,  Takuro SHIMAZU

IPC: F16H61/12 ,  F16H37/08 ,  F16H61/662 ,  F16H9/18

Abstract: A control apparatus for a vehicle drive-force transmitting apparatus including a gear mechanism and a continuously-variable transmission mechanism and defining first and second drive-force transmitting paths. When the continuously-variable transmission mechanism is in a failure state in which an actual gear ratio of the continuously-variable transmission mechanism is not the highest gear ratio as a target gear ratio, the control apparatus sets the target gear ratio to a transient target gear ratio that is gradually changed toward the highest gear ratio, for causing the actual gear ratio to be gradually changed toward the highest gear ratio. A rate of change of the transient target gear ratio is higher in a state in which a drive force is transmitted through the first drive-force transmitting path by the gear mechanism, than in a state in which the drive force is transmitted through the second drive-force transmitting path by the continuously-variable transmission mechanism.

公开(公告)号：US20190195359A1

公开(公告)日：2019-06-27

申请号：US16232873

申请日：2018-12-26

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Kunio HATTORI ,  Taichi WASHIO ,  Takuro SHIMAZU

IPC: F16H61/662 ,  F16H9/18 ,  F16H37/08 ,  F16H61/70 ,  F16H61/12

Abstract: A control apparatus for a drive-force transmitting apparatus that includes a transmission having primary and secondary pulleys. When a detection accuracy of rotational speed of the primary and secondary pulley is not assured, the control apparatus sets each of (i) a secondary-thrust calculation thrust ratio value used for calculation of a secondary thrust that is to be applied to the secondary pulley and (ii) a primary-thrust calculation thrust ratio value used for calculation of a primary thrust that is to be applied to the primary pulley, such that each of the secondary-thrust calculation thrust ratio value and the primary-thrust calculation thrust ratio value is dependent on a result of a determination as to whether an actual gear ratio of the transmission is the highest gear ratio and a result of a determination as to whether an input torque inputted to the transmission is lower than a given torque value.

公开(公告)号：US20210148460A1

公开(公告)日：2021-05-20

申请号：US17093828

申请日：2020-11-10

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Asami FUJITA ,  Kunio HATTORI ,  Jun AMANO ,  Atsushi AYABE

IPC: F16H61/06

Abstract: A shift control apparatus for a vehicle automatic transmission to be provided in a vehicle that includes a hydraulic transmission device having a lockup clutch, an engine, an input shaft connected to the engine through the hydraulic transmission device, and drive wheels. The shift control apparatus includes a shift-down control portion configured, when a shift-down operation is executed to establish a first gear position by releasing a second engagement device, during running of the vehicle in a driven state with a second gear position being established with engagement of the second engagement device, to increase a torque of the engine so as to increase an input rotational speed as a rotational speed of the input shaft through the lockup clutch that is placed in an engaged state, and to release the lockup clutch before the input rotational speed reaches a synchronous speed of the first gear position.

公开(公告)号：US20190195358A1

公开(公告)日：2019-06-27

申请号：US16232562

申请日：2018-12-26

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Kunio HATTORI ,  Koji HATTORI

IPC: F16H61/662 ,  F16H9/18 ,  F16H37/08

Abstract: A control apparatus for a drive-force transmitting apparatus that includes a transmission having primary and secondary pulleys. The control apparatus calculates a target thrust applied to the secondary pulley such that the target thrust is larger during a vehicle driven state than during a vehicle driving state. The control apparatus sets a first determination threshold of a drive-force related value used to determine whether it is the vehicle driving state or vehicle driven state and a second determination threshold of the drive-force related value used to switch from determination of the driven state to determination of the driving state, such that a difference of the first and second determination thresholds is larger and a range of the drive-force related value in which the driven state is determined is wider, when an automatic running-speed control is executed, than when the automatic running-speed control is not executed.

公开(公告)号：US20170114895A1

公开(公告)日：2017-04-27

申请号：US15313647

申请日：2015-05-27

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Kunio HATTORI ,  Daisuke INOUE ,  Hiroki KONDO ,  Kenji MATSUO ,  Mitsuhiro FUKAO

IPC: F16H61/662 ,  F16H37/08 ,  F16H37/02

CPC classification number: F16H61/66259 ,  F16H37/022 ,  F16H37/0846 ,  F16H61/66272 ,  F16H2037/026 ,  F16H2061/66277

Abstract: When a line pressure is dominated (determined) by at least one of a primary pressure and a secondary pressure during idling of a continuously variable transmission, the hydraulic pressure that is applied to at least one of pulleys, to which the hydraulic pressure larger than a clutch pressure is applied, is reduced. On the other hand, when the line pressure is dominated by the clutch pressure during idling of the continuously variable transmission, the speed gear ratio of the continuously variable transmission is controlled to a lowest speed gear ratio.