公开(公告)号：US11702063B2

公开(公告)日：2023-07-18

申请号：US16925280

申请日：2020-07-09

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Atsushi Tabata ,  Koichi Okuda ,  Tooru Matsubara ,  Yasuhiro Hiasa ,  Yasutaka Tsuchida

IPC: B60W20/30 ,  G01P3/08 ,  B60W20/15

CPC classification number: B60W20/30 ,  B60W20/15 ,  G01P3/08

Abstract: Since a maximum rotation speed of a second rotary machine is set to a lower value when a supercharging pressure is high than when the supercharging pressure is low, an engine torque decreases with an rotation speed of the second rotary machine which is relatively low and the rotation speed is less likely to fall into a high-rotation state. When the supercharging pressure is relatively low and the rotation speed is less likely to reach an upper-limit rotation speed of the second rotary machine, the maximum rotation speed is set to a relatively high value. Accordingly, the engine torque does not decrease to the rotation speed which is relatively high and power performance can be easily secured. As a result, it is possible to prevent a decrease in power performance due to the decrease in the engine torque and to prevent the rotation speed from falling into a high-rotation state.

公开(公告)号：US11479234B2

公开(公告)日：2022-10-25

申请号：US16898413

申请日：2020-06-10

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Atsushi Tabata ,  Koichi Okuda ,  Tooru Matsubara ,  Yasuhiro Hiasa ,  Yasutaka Tsuchida

IPC: B60W20/15 ,  B60K6/24 ,  B60K6/36 ,  F02B37/12 ,  F02D41/14

Abstract: An MG1 torque at a time of decreasing an engine speed of an engine is made larger when a turbocharging pressure by a turbocharger is higher than when the turbocharging pressure is lower. In this way, even if the losses of pumps of the engine differ due to the remaining turbocharging pressure during a transition of stopping the engine in turbocharging, it is possible to appropriately reduce the engine speed. Therefore, when the engine is being brought to a stop, it is possible to appropriately suppress vibration generated in the vehicle.

公开(公告)号：US11440531B2

公开(公告)日：2022-09-13

申请号：US16898413

申请日：2020-06-10

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Atsushi Tabata ,  Koichi Okuda ,  Tooru Matsubara ,  Yasuhiro Hiasa ,  Yasutaka Tsuchida

IPC: B60W20/15 ,  B60K6/24 ,  B60K6/36 ,  F02B37/12 ,  F02D41/14

Abstract: An MG1 torque at a time of decreasing an engine speed of an engine is made larger when a turbocharging pressure by a turbocharger is higher than when the turbocharging pressure is lower. In this way, even if the losses of pumps of the engine differ due to the remaining turbocharging pressure during a transition of stopping the engine in turbocharging, it is possible to appropriately reduce the engine speed. Therefore, when the engine is being brought to a stop, it is possible to appropriately suppress vibration generated in the vehicle.

公开(公告)号：US11377091B2

公开(公告)日：2022-07-05

申请号：US16927884

申请日：2020-07-13

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Tooru Matsubara ,  Atsushi Tabata ,  Koichi Okuda ,  Yasutaka Tsuchida ,  Keisuke Omuro ,  Tetsuya Kono

IPC: B60W20/40 ,  B60L50/16 ,  B60K6/445 ,  B60W10/06 ,  B60W10/08

Abstract: In a vehicle condition in which an engine rotation speed is likely to exceed a maximum rotation speed, since supercharging by a supercharger is curbed, it is possible to curb an increase in an engine torque. Even when the engine rotation speed exceeds the maximum rotation speed, the engine rotation speed is made less likely to increase by control of decreasing the engine torque. In a vehicle condition in which the engine rotation speed is less likely to exceed the maximum rotation speed, since a supercharging pressure becomes relatively high, it becomes easier to secure power performance. Accordingly, it is possible to curb a decrease in power performance due to curbing of supercharging and to prevent an engine from falling into a high-rotation state in which the engine rotation speed exceeds the maximum rotation speed.

公开(公告)号：US11377087B2

公开(公告)日：2022-07-05

申请号：US16923070

申请日：2020-07-07

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Atsushi Tabata ,  Koichi Okuda ,  Tooru Matsubara ,  Takahiro Kimura

IPC: B60W20/15 ,  B60W10/06 ,  B60W10/08 ,  B60W40/06 ,  F02B37/12

Abstract: Since a supercharging pressure from a supercharger decreases when an actual rotation speed difference is equal to or less than a margin rotation speed difference, a response delay of an engine torque due to a response delay of the supercharging pressure in a high rotation curbing control unit can be appropriately curbed. A shortage of the engine torque with respect to a required engine torque due to a decrease in the supercharging pressure by a supercharging pressure decreasing unit is compensated for using an torque of a second rotary machine. Accordingly, it is possible to curb a decrease in power performance due to a decrease in the supercharging pressure and to prevent an engine rotation speed from falling into a high-rotation state in which the engine rotation speed exceeds a maximum rotation speed.

公开(公告)号：US11117565B2

公开(公告)日：2021-09-14

申请号：US16372514

申请日：2019-04-02

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Takeshi Kitahata ,  Tooru Matsubara ,  Kazuyuki Shiiba ,  Koichi Okuda ,  Atsushi Tabata

IPC: B60W20/00 ,  B60K6/40 ,  B60K6/547 ,  B60K6/387 ,  B60W10/06 ,  B60W10/08 ,  B60W10/02

Abstract: A hybrid vehicle with an engine and a rotary machine each coupled to a drive wheel in a power transmittable manner, comprises: an electronic control device that makes the rotary machine output a starting-time compensation torque to compensate a drop in a drive torque caused in a starting process of the engine in addition to a running torque when the engine is started while the vehicle is in a running state in which the drive torque is generated by the rotary machine and the engine is in a stopped state. The electronic control device starts the engine such that a starting-time inertia torque that is generated according to starting of the engine and causes the drop in the drive torque is made smaller when a torque margin of the rotary machine which is applied to the starting-time compensation torque is relatively small than when the torque margin is relatively large.

公开(公告)号：US10982613B2

公开(公告)日：2021-04-20

申请号：US16934073

申请日：2020-07-21

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Atsushi Tabata ,  Koichi Okuda ,  Tooru Matsubara ,  Hiromasa Tatsushiro ,  Kenta Kumazaki

IPC: F02D41/24 ,  F02B37/16 ,  F02D41/02

Abstract: A controller and a control method for a vehicle including an engine with a supercharger and an automatic transmission provided in a power transmission path between the engine and driving wheels are provided. The controller is configured to perform learning control of learning a command value associated with gear shifting of the automatic transmission. The controller is configured to limit a supercharging pressure of the supercharger when the automatic transmission is performing gear shifting to be equal to or less than a predetermined pressure until initial learning which is performed by the learning control unit in a predetermined period after the vehicle has been manufactured is completed.

公开(公告)号：US10894538B2

公开(公告)日：2021-01-19

申请号：US16420664

申请日：2019-05-23

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Takeshi Kitahata ,  Tooru Matsubara ,  Kazuyuki Shiiba ,  Koichi Okuda ,  Atsushi Tabata

IPC: B60W10/10 ,  B60W20/20 ,  B60W20/13 ,  B60W30/192

Abstract: A control apparatus for a hybrid vehicle that includes an engine serving as a drive force source, an electric motor serving as a drive force source, drive wheels, a storage battery for supplying and receiving an electric power to and from the electric motor, a transmission mechanism for transmitting a drive force supplied from each of the drive force sources toward the drive wheels. During running of the hybrid vehicle by a drive force of the electric motor with the engine being stopped, the control apparatus is configured to determine whether the engine is to be started. When determining that the engine is to be started during the running of the hybrid vehicle, the control apparatus is configured to cause a gear ratio of the transmission mechanism to be changed and to cause the engine to be started after the gear ratio of the transmission mechanism has been changed.

公开(公告)号：US10793139B2

公开(公告)日：2020-10-06

申请号：US16046328

申请日：2018-07-26

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Jun Goto ,  Kenta Kumazaki ,  Kazuyuki Shiiba ,  Tooru Matsubara ,  Masato Yoshikawa ,  Takahiro Kimura

IPC: B60W20/30 ,  B60W10/00 ,  B60W10/02 ,  B60W10/06 ,  B60W10/08 ,  B60W10/11 ,  F16H61/00 ,  B60W30/18 ,  F16H61/02 ,  B60K6/547 ,  F16H61/06 ,  F16H61/68 ,  F16H61/66 ,  F16H59/18

Abstract: A control apparatus is provided for a vehicle that includes (i) an engine serving as a drive power source, (ii) a motor/generator serving as the drive power source and (iii) a mechanically-operated transmission mechanism that constitutes a part of a power transmitting path between the drive power source and drive wheels of the vehicle. The control apparatus includes a shift control portion is configured, when an input torque inputted to the mechanically-operated transmission mechanism is to be controlled in process of a coasting shift-down action executed in the mechanically-operated transmission mechanism, to determine an upper limit value of the input torque inputted to the mechanically-operated transmission mechanism in the process of the coasting shift-down action, such that the determined upper limit value is lower during operation of the engine than during stop of the engine.

公开(公告)号：US10604022B2

公开(公告)日：2020-03-31

申请号：US15725774

申请日：2017-10-05

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Kenta Kumazaki ,  Tooru Matsubara

IPC: B60L15/20 ,  B60K6/547 ,  B60W10/18 ,  B60W10/20 ,  B60K6/365 ,  B60K6/445 ,  B60W50/00 ,  B60W10/08 ,  B60W10/115 ,  B60W30/02 ,  B60W30/18 ,  B60W20/30 ,  B60W20/15 ,  B60L7/14 ,  B60W30/14

Abstract: A control apparatus for an electric vehicle provided with an electric motor serving as a drive power source, and a step-variable transmission disposed in a power transmitting path between the electric motor and drive wheels, the control apparatus having a first control mode in which acceleration and deceleration of the vehicle are controlled on the basis of operations by an operator of the vehicle to accelerate and decelerate the vehicle, and a second control mode in which the acceleration and deceleration of the vehicle are automatically adjusted according to a target running state of the vehicle, irrespective of the operations of the operator, the control apparatus including a shift-down action initiating condition setting portion configured to set a shift-down action initiating condition for initiating a shift-down action of the step-variable transmission during a regenerative decelerating run of the vehicle, according to a torque-related value related to a regenerative torque generated by the electric motor, and a running speed of the vehicle. The shift-down action initiating condition setting portion sets the shift-down action initiating condition such that the shift-down action is initiated at a higher value of the running speed of the vehicle during the regenerative decelerating run in the second control mode, than in the first control mode.