Patents by Inventor Keisuke OMURO
Keisuke OMURO has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11912125Abstract: A drive apparatus for vehicle comprising a first power source, a first output rotating member, a second output rotating member, a second power source, a differential device, a first engagement device, a second engagement device, and a control device. The control device establishes, as drive modes driving a vehicle, a first drive mode controlling a torque distribution ratio between front wheels and rear wheels by putting the vehicle in all-wheel drive state by power from the second power source while controlling the first engagement device to be in slip state with the second engagement device kept in engaged state, and a second drive mode putting the vehicle in all-wheel drive state by power from the first power source while fixing the torque distribution ratio with both the first engagement device and the second engagement device kept in engaged state.Type: GrantFiled: May 12, 2023Date of Patent: February 27, 2024Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Keisuke Omuro, Atsushi Tabata, Koichi Okuda, Yohei Habata
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Publication number: 20230373296Abstract: A drive apparatus for vehicle comprising a first power source, a first output rotating member, a second output rotating member, a second power source, a differential device, a first engagement device, a second engagement device, and a control device. The control device establishes, as drive modes driving a vehicle, a first drive mode controlling a torque distribution ratio between front wheels and rear wheels by putting the vehicle in all-wheel drive state by power from the second power source while controlling the first engagement device to be in slip state with the second engagement device kept in engaged state, and a second drive mode putting the vehicle in all-wheel drive state by power from the first power source while fixing the torque distribution ratio with both the first engagement device and the second engagement device kept in engaged state.Type: ApplicationFiled: May 12, 2023Publication date: November 23, 2023Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Keisuke OMURO, Atsushi TABATA, Koichi OKUDA, Yohei HABATA
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Publication number: 20230373460Abstract: A drive apparatus for vehicle comprising a first power source, a first output rotating member, a second output rotating member, a second power source, a differential device, a first engagement device, a second engagement device, and a control device.Type: ApplicationFiled: May 12, 2023Publication date: November 23, 2023Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Keisuke OMURO, Atsushi TABATA, Koichi OKUDA, Yohei HABATA
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Patent number: 11472399Abstract: A controller for a hybrid vehicle predicts whether necessary discharging electric power from a power storage device which is required to perform downshift in a transmission exceeds upper-limit discharging electric power of the power storage device when downshift in the transmission is performed in a hybrid vehicle travel mode and controls a compressor rotation speed such that a rate of increase of the compressor rotation speed of a supercharger at the time of performing downshift in the transmission increases as the upper-limit discharging electric power decreases when it is predicted that the necessary discharging electric power exceeds the upper-limit discharging electric power.Type: GrantFiled: July 9, 2020Date of Patent: October 18, 2022Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Keisuke Omuro, Atsushi Tabata, Tetsuya Kono, Koichi Okuda
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Patent number: 11420610Abstract: A vehicle includes driving wheels, driven wheels, a drive device connected to a drive shaft, a drive force distribution device, and an electronic control unit configured to execute a moderate change process on a required torque required for the drive shaft to set a target torque to be output to the drive shaft when the torque output to the drive shaft changes and crosses a value of zero. The electronic control unit is configured to control the drive device such that the target torque is output to the drive shaft, and set the target torque such that a change in the target torque with respect to a change in the required torque is more moderate when the driving side distribution ratio is small compared with the change in the target torque with respect to the change in the required torque when the driving side distribution ratio is large.Type: GrantFiled: August 5, 2020Date of Patent: August 23, 2022Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Atsushi Tabata, Koichi Okuda, Tooru Matsubara, Yuuki Makino, Keisuke Omuro
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Patent number: 11377091Abstract: 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.Type: GrantFiled: July 13, 2020Date of Patent: July 5, 2022Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Tooru Matsubara, Atsushi Tabata, Koichi Okuda, Yasutaka Tsuchida, Keisuke Omuro, Tetsuya Kono
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Publication number: 20210229654Abstract: 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.Type: ApplicationFiled: July 13, 2020Publication date: July 29, 2021Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Tooru MATSUBARA, Atsushi TABATA, Koichi OKUDA, Yasutaka TSUCHIDA, Keisuke OMURO, Tetsuya KONO
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Publication number: 20210101583Abstract: A controller for a hybrid vehicle predicts whether necessary discharging electric power from a power storage device which is required to perform downshift in a transmission exceeds upper-limit discharging electric power of the power storage device when downshift in the transmission is performed in a hybrid vehicle travel mode and controls a compressor rotation speed such that a rate of increase of the compressor rotation speed of a supercharger at the time of performing downshift in the transmission increases as the upper-limit discharging electric power decreases when it is predicted that the necessary discharging electric power exceeds the upper-limit discharging electric power.Type: ApplicationFiled: July 9, 2020Publication date: April 8, 2021Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Keisuke OMURO, Atsushi TABATA, Tetsuya KONO, Koichi OKUDA
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Publication number: 20210039622Abstract: A vehicle includes driving wheels, driven wheels, a drive device connected to a drive shaft, a drive force distribution device, and an electronic control unit configured to execute a moderate change process on a required torque required for the drive shaft to set a target torque to be output to the drive shaft when the torque output to the drive shaft changes and crosses a value of zero. The electronic control unit is configured to control the drive device such that the target torque is output to the drive shaft, and set the target torque such that a change in the target torque with respect to a change in the required torque is more moderate when the driving side distribution ratio is small compared with the change in the target torque with respect to the change in the required torque when the driving side distribution ratio is large.Type: ApplicationFiled: August 5, 2020Publication date: February 11, 2021Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Atsushi TABATA, Koichi OKUDA, Tooru MATSUBARA, Yuuki MAKINO, Keisuke OMURO
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Patent number: 10562522Abstract: A control apparatus for a power transmitting system of a vehicle includes a drive mode control portion for selectively establishing one of first and second engine-braking drive modes in which a braking torque of the engine is applied to the vehicle. The first engine-braking drive mode is established in an engaged state of the first coupling device, while the second engine-braking drive mode is established in an engaged state of the second coupling device. The drive mode control portion switches the power transmitting system between the first and second engine-braking drive modes, such that the engine speed is held constant in the process of switching between the first and second engine-braking drive modes.Type: GrantFiled: September 21, 2018Date of Patent: February 18, 2020Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Keisuke Omuro, Atsushi Tabata, Tatsuya Imamura, Koichi Okuda
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Publication number: 20190084555Abstract: A control apparatus for a power transmitting system of a vehicle includes a drive mode control portion for selectively establishing one of first and second engine-braking drive modes in which a braking torque of the engine is applied to the vehicle. The first engine-braking drive mode is established in an engaged state of the first coupling device, while the second engine-braking drive mode is established in an engaged state of the second coupling device. The drive mode control portion switches the power transmitting system between the first and second engine-braking drive modes, such that the engine speed is held constant in the process of switching between the first and second engine-braking drive modes.Type: ApplicationFiled: September 21, 2018Publication date: March 21, 2019Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Keisuke Omuro, Atsushi Tabata, Tatsuya Imamura, Koichi Okuda
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Patent number: 9695929Abstract: A speed change device includes a power transfer shaft, a tubular shaft member, and a planetary gear mechanism that has a carrier. An in-shaft oil passage is formed in the power transfer shaft. A radially inner portion of the carrier and the tubular shaft member are splined to each other. An inside opening portion of a guide oil passage is formed in a non-spline portion of the radially inner portion. A target race member of a thrust bearing is disposed so as to abut against the carrier. The radially innermost position of the non-spline portion is on the radially outer side of the radially outermost position of a spline engagement portion. An oil receiving portion is formed by the tubular shaft member, the non-spline portion, and the target race member.Type: GrantFiled: March 2, 2015Date of Patent: July 4, 2017Assignees: AISIN AW CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Katsunori Miyoshi, Kenji Sasaki, Keisuke Omuro, Koichi Okuda, Masafumi Yamamoto, Keita Imai
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Patent number: 9604530Abstract: A drive system for a hybrid vehicle, the drive system includes an engine (1), a rotary machine (MG1), a differential unit (20), and a transmission unit (10). The rotary machine (MG1) is arranged coaxially with the engine (1). The differential unit (20) connects the engine (1) and the rotary machine (MG1) to a drive wheel side. The differential unit (20) is arranged coaxially with the engine (1) and the rotary machine (MG1). The differential unit (20) is arranged between the engine (1) and the rotary machine (MG2). The transmission unit (10) changes rotation of the engine in speed and transmits the rotation to the differential unit (20). The transmission unit (10) is arranged coaxially with the engine (1), the rotary machine (MG1) and the differential unit (20). The rotary machine (MG1) and the differential unit (20) are arranged between the transmission unit (10) and the engine (1).Type: GrantFiled: July 16, 2014Date of Patent: March 28, 2017Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Keisuke Omuro, Atsushi Tabata, Ryuji Ibaraki, Yuji Yasuda, Isao Sato, Toshiki Kanada, Tatsuya Imamura, Kouichi Okuda, Masafumi Yamamoto, Keita Imai
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Publication number: 20170016528Abstract: A speed change device includes a power transfer shaft, a tubular shaft member, and a planetary gear mechanism that has a carrier. An in-shaft oil passage is formed in the power transfer shaft. A radially inner portion of the carrier and the tubular shaft member are splined to each other. An inside opening portion of a guide oil passage is formed in a non-spline portion of the radially inner portion. A target race member of a thrust bearing is disposed so as to abut against the carrier. The radially innermost position of the non-spline portion is on the radially outer side of the radially outermost position of a spline engagement portion. An oil receiving portion is formed by the tubular shaft member, the non-spline portion, and the target race member.Type: ApplicationFiled: March 2, 2015Publication date: January 19, 2017Applicants: AISIN AW CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Katsunori MIYOSHI, Kenji SASAKI, Keisuke OMURO, Koichi OKUDA, Masafumi YAMAMOTO, Keita IMAI
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Patent number: 9539891Abstract: A hybrid vehicle driving apparatus includes: an engine; a first rotator; a second rotator; a first differential mechanism configured to transmit a rotation of the engine to a driving wheel side; and a switching device configured to shift the first differential mechanism. The first rotator is coaxially disposed with the engine, the second rotator is disposed with the engine, the second rotator is disposed on a different axis from an axis of the engine to constitute a multiple-axis system, the first differential mechanism is coaxially disposed with and between the engine and the first rotator, and the switching device is disposed at an opposite side from the engine with respect to the first rotator.Type: GrantFiled: September 21, 2012Date of Patent: January 10, 2017Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Koichi Okuda, Masafumi Yamamoto, Keita Imai, Atsushi Tabata, Keisuke Omuro, Toshiki Kanada
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Publication number: 20160159212Abstract: A drive system for a hybrid vehicle, the drive system includes an engine (1), a rotary machine (MG1), a differential unit (20), and a transmission unit (10). The rotary machine (MG1) is arranged coaxially with the engine (1). The differential unit (20) connects the engine (1) and the rotary machine (MG1) to a drive wheel side. The differential unit (20) is arranged coaxially with the engine (1) and the rotary machine (MG1). The differential unit (20) is arranged between the engine (1) and the rotary machine (MG2). The transmission unit (10) changes rotation of the engine in speed and transmits the rotation to the differential unit (20). The transmission unit (10) is arranged coaxially with the engine (1), the rotary machine (MG1) and the differential unit (20). The rotary machine (MG1) and the differential unit (20) are arranged between the transmission unit (10) and the engine (1).Type: ApplicationFiled: July 16, 2014Publication date: June 9, 2016Applicant: Toyota Jidosha Kabushiki KaishaInventors: Keisuke OMURO, Atsushi TABATA, Ryuji IBARAKI, Yuji YASUDA, Isao SATO, Toshiki KANADA, Tatsuya IMAMURA, Kouichi OKUDA, Masafumi YAMAMOTO, Keita IMAI
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Publication number: 20150251530Abstract: A hybrid vehicle driving apparatus includes: an engine; a first rotator; a second rotator; a first differential mechanism configured to transmit a rotation of the engine to a driving wheel side; and a switching device configured to shift the first differential mechanism. The first rotator is coaxially disposed with the engine, the second rotator is disposed with the engine, the second rotator is disposed on a different axis from an axis of the engine to constitute a multiple-axis system, the first differential mechanism is coaxially disposed with and between the engine and the first rotator, and the switching device is disposed at an opposite side from the engine with respect to the first rotator.Type: ApplicationFiled: September 21, 2012Publication date: September 10, 2015Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Koichi Okuda, Masafumi Yamamoto, Keita Imai, Atsushi Tabata, Keisuke Omuro, Toshiki Kanada
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Patent number: 9005064Abstract: A vehicle using a first MG, a second MG, and an engine as drive sources includes an electric oil pump, a mechanical oil pump driven by power of the engine, and a hydraulic circuit. The hydraulic circuit includes first oil passages for supplying oil to the first MG, a second oil passage for supplying oil to the second MG, a switch-over valve capable of switching over states of communication of the first oil passage, and a switch control valve that outputs pilot hydraulic pressure to the switch-over valve. States of the switch-over valve are switched over in accordance with hydraulic pressure from the switch control valve and hydraulic pressure from the mechanical pump.Type: GrantFiled: December 24, 2013Date of Patent: April 14, 2015Assignee: Toyota Jidosha Kabushiki KaishaInventors: Masafumi Yamamoto, Atsushi Tabata, Koichi Okuda, Keita Imai, Keisuke Omuro
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Publication number: 20140180441Abstract: Provided is a control device of a vehicle, the vehicle having an electric motor and an engine. The control device includes an operating device and a controller. The operating device is configured to be selected a running capability of the vehicle. The controller configured to increase a running capability to be achieved using the electric motor alone, in a case where the vehicle travels using the electric motor alone according to the selected running capability, as compared with a case where the vehicle travels using the electric motor alone and the running capability is not selected.Type: ApplicationFiled: December 18, 2013Publication date: June 26, 2014Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yasuhiro HIASA, Atsushi TABATA, Tooru MATSUBARA, Takeshi KITAHATA, Tatsuya IMAMURA, Kenta KUMAZAKI, Kouichi OKUDA, Masafumi YAMAMOTO, Keita IMAI, Keisuke OMURO
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Publication number: 20140179477Abstract: A vehicle using a first MG, a second MG, and an engine as drive sources includes an electric oil pump, a mechanical oil pump driven by power of the engine, and a hydraulic circuit. The hydraulic circuit includes first oil passages for supplying oil to the first MG, a second oil passage for supplying oil to the second MG, a switch-over valve capable of switching over states of communication of the first oil passage, and a switch control valve that outputs pilot hydraulic pressure to the switch-over valve. States of the switch-over valve are switched over in accordance with hydraulic pressure from the switch control valve and hydraulic pressure from the mechanical pump.Type: ApplicationFiled: December 24, 2013Publication date: June 26, 2014Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Masafumi YAMAMOTO, Atsushi TABATA, Koichi OKUDA, Keita IMAI, Keisuke OMURO