Patents by Inventor Rentaro Kuroki
Rentaro Kuroki 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: 12143822Abstract: A control system includes a computer configured to remotely control at least one of charging and discharging of a power storage device mounted on a control target. The computer is configured to transmit a first command indicating charging power or discharging power of the power storage device to the control target via each of a first communication path and a second communication path. The control system further includes a determination unit configured to determine whether or not any one of the first communication path and the second communication path is under a cyberattack by using a second command received by the control target via the first communication path when the computer transmits the first command, and a third command received by the control target via the second communication path when the computer transmits the first command.Type: GrantFiled: April 4, 2022Date of Patent: November 12, 2024Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Masato Ehara, Rentaro Kuroki, Shunsuke Kobuna, Tatsuro Kiyohara, Naohiro Seo, Takaharu Tateishi
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Publication number: 20230019914Abstract: A control system includes a computer that controls each of multiple power balancing resources. The computer selects one or more control targets to be used for power balancing of an external electric power source from the power balancing resources, and controls each of the one or more control targets so as to cause the power storage device to charge or discharge for the power balancing. The computer preferentially selects the power balancing resource provided with a small-capacity power storage device as the control target for the power balancing of which duration is shorter than a predetermined time, and preferentially selects the power balancing resource provided with a large-capacity power storage device as the control target for the power balancing of which the duration is longer than the predetermined time.Type: ApplicationFiled: May 17, 2022Publication date: January 19, 2023Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Masato EHARA, Rentaro KUROKI, Shunsuke KOBUNA, Tatsuro KIYOHARA, Naohiro SEO, Takaharu TATEISHI
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Publication number: 20230019846Abstract: An electric power management system includes a plurality of the vehicles, each including a battery, and a server that manages an exchange of electric power between the battery and an electric power system of an electric power company. The server detects a predetermined operation of a user that correlates with termination of the exchange of the electric power between the battery and the electric power system. When the predetermined operation is detected, the server calculates an estimated time when the exchange of the electric power between the battery and the electric power system is terminated, and executes a process of distributing the electric power to be exchanged by the vehicle in which the exchange of the electric power with the electric power system is estimated to be terminated at the calculated estimated time to another vehicle that performs the exchange of the electric power with the electric power system.Type: ApplicationFiled: April 27, 2022Publication date: January 19, 2023Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Masato EHARA, Rentaro KUROKI, Shunsuke KOBUNA, Tatsuro KIYOHARA, Naohiro SEO, Takaharu TATEISHI
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Publication number: 20230014362Abstract: An electric power management system is a system that performs an exchange of electric power with an electric power system of an electric power company that is a counterparty of the exchange of the electric power, and includes a plurality of the vehicles, each including a battery, and a server that manages an exchange of the electric power between the battery of each of the vehicles and the electric power system. The server limits the exchange of the electric power between the electric power system and the battery by an upper limit value or a lower limit value of a state of charge of the battery, and changes the upper limit value or the lower limit value in accordance with a degree of charge-discharge of the battery.Type: ApplicationFiled: April 15, 2022Publication date: January 19, 2023Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Masato EHARA, Rentaro KUROKI, Shunsuke KOBUNA, Tatsuro KIYOHARA, Naohiro SEO, Takaharu TATEISHI
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Publication number: 20230013438Abstract: An electric power management system is a system that performs an exchange of electric power with an electric power system of an electric power company that is a counterparty of the exchange of the electric power, and includes a plurality of the vehicles, each including a battery, and a server that manages an exchange of the electric power between the battery of each of the vehicles and the electric power system. The server limits the exchange of the electric power between the electric power system and the battery by an upper limit value or a lower limit value of a state of charge of the battery, and decreases the upper limit value or increases the lower limit value when a period during which the vehicle is continuously parked in a place where the vehicle can exchange the electric power is equal to or longer than a predetermined period.Type: ApplicationFiled: April 15, 2022Publication date: January 19, 2023Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Masato EHARA, Rentaro KUROKI, Shunsuke KOBUNA, Tatsuro KIYOHARA, Naohiro SEO, Takaharu TATEISHI
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Publication number: 20230001820Abstract: An electric power management system is a system that performs an exchange of electric power with an electric power system of an electric power company that is a counterparty of the exchange of the electric power, and includes a plurality of the vehicles, each including a battery, and a server that manages an exchange of the electric power between the battery of each of the vehicles and the electric power system. The server manages the exchange of the electric power for each vehicle group in which the vehicles are bundled, and configures the vehicle group in advance by bundling the vehicles having the same or similar electric power supply and demand characteristics of the battery.Type: ApplicationFiled: May 17, 2022Publication date: January 5, 2023Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Masato EHARA, Rentaro KUROKI, Shunsuke KOBUNA, Tatsuro KIYOHARA, Naohiro SEO, Takaharu TATEISHI
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Publication number: 20230004132Abstract: An electric power management system is a system that performs an exchange of electric power with an electric power system of an electric power company that is a counterparty of the exchange of the electric power, and includes a plurality of the vehicles, each including a battery, and a server that manages an exchange of the electric power between the battery of each of the vehicles and the electric power system. The server manages the exchange of the electric power for each vehicle group in which the vehicles are bundled, and configures the vehicle groups in advance such that distributions of the electric power supply and demand characteristics of the batteries of the vehicles included in the vehicle groups are the same or similar.Type: ApplicationFiled: April 7, 2022Publication date: January 5, 2023Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Masato EHARA, Rentaro KUROKI, Shunsuke KOBUNA, Tatsuro KIYOHARA, Naohiro SEO, Takaharu TATEISHI
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Publication number: 20220394482Abstract: A control system includes a computer configured to remotely control at least one of charging and discharging of a power storage device mounted on a control target. The computer is configured to transmit a first command indicating charging power or discharging power of the power storage device to the control target via each of a first communication path and a second communication path. The control system further includes a determination unit configured to determine whether or not any one of the first communication path and the second communication path is under a cyberattack by using a second command received by the control target via the first communication path when the computer transmits the first command, and a third command received by the control target via the second communication path when the computer transmits the first command.Type: ApplicationFiled: April 4, 2022Publication date: December 8, 2022Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Masato EHARA, Rentaro KUROKI, Shunsuke KOBUNA, Tatsuro KIYOHARA, Naohiro SEO, Takaharu TATEISHI
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Publication number: 20220300838Abstract: A behavior prediction device calculates a model predicted value obtained by statistically predicting future behavior of a vehicle based on past behavior history of the vehicle, and acquires a user input value representing scheduled future behavior of the vehicle. A first integrated error is obtained by integrating an error between the model predicted value and an actual value of the vehicle behavior during a predetermined period, and a second integrated error is obtained by integrating an error between the user input value and the actual value during the same period. The behavior prediction device determines that the user input value is a final predicted value of the future behavior when the first integrated error is smaller than the second integrated error, and determines that the model predicted value is the final predicted value when the first integrated error is equal to or larger than the second integrated error.Type: ApplicationFiled: March 2, 2022Publication date: September 22, 2022Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Rentaro KUROKI
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Publication number: 20180298808Abstract: A cooling apparatus of an internal combustion engine according to the invention comprises a first passage formed in the cylinder block, through which the cooling medium flows for cooling between-bores portions, a second passage formed in the cylinder block, through which the cooling medium flows for cooling a bore-surrounding portion, and a cooling medium supplying mechanism for supplying the cooling medium to the first and second passages such that ability of the cooling medium for cooling the between-bore portions, is different from the ability of the cooling medium for cooling the bore-surrounding portion.Type: ApplicationFiled: April 10, 2018Publication date: October 18, 2018Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yasuhiko SUGIURA, Rentaro Kuroki, Ryo Michikawauchi, Yuji Miyoshi
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Patent number: 9896103Abstract: A running control device of a vehicle includes an engine with cylinders, a clutch connecting/disconnecting a power transmission path between the engine and wheels, and a variable mechanism to vary an intake air amount sucked into the cylinders. The running control device performs a normal running mode by transmitting engine drive force to the wheels, a neutral inertia running mode by disconnecting the power transmission path between the engine and the wheels, and a cylinder resting inertia running mode by resting at least a part of the cylinders while the power transmission path between the engine and the wheels is connected. The running control device makes the intake air amount sucked into the cylinders larger at the time of return from the neutral inertia running mode to the normal running mode as compared to the case of return from the cylinder resting inertia running mode to the normal running mode.Type: GrantFiled: October 31, 2012Date of Patent: February 20, 2018Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Rentaro Kuroki, Takuya Hirai, Masaki Mitsuyasu, Jonggap Kim, Masaki Matsunaga, Yasunari Kido, Takeaki Suzuki, Takayuki Kogure, Yukari Okamura, Akihiro Sato, Yusuke Kinoshita
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Patent number: 9874407Abstract: A heat exchanger includes: heat exchanger bodies arranged in parallel, each allowing a fluid to be cooled to flow therethrough in one direction; a housing that forms a coolant passage that allows a coolant to flow therethrough around each of the heat exchanger bodies; a coolant inlet portion and a coolant outlet portion located in a position corresponding to first ends of the heat exchanger bodies in a flow direction of the fluid to be cooled; a separating portion that separates the coolant passages in a position corresponding to second ends of the head exchanger bodies in the flow direction of the fluid to be cooled so that a communicating portion that allows the coolant passages to communicate with each other is left; and a flow passage area increasing portion that increases a flow passage area of the communicating portion. This structure achieves good cooling performance in the heat exchanger.Type: GrantFiled: May 8, 2013Date of Patent: January 23, 2018Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Sho Tomita, Rentaro Kuroki
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Patent number: 9789874Abstract: A running control device has an engine coupling running mode enabling an engine brake running mode performed by coupling an engine and wheels with an engine brake applied by driven rotation of the engine, and an inertia running mode performed with an engine brake force lower than that of the engine brake running mode. The running control device includes a steering wheel steering angle as a condition of terminating the inertia running mode. The running control device performs a first inertia running mode with the rotation of the engine stopped and a second inertia running mode with the engine rotating. The first inertia running mode is terminated when the steering angle becomes equal to or greater than a predefined first determination value. The second inertia running mode is terminated when the steering angle becomes equal to or greater than a predefined second determination value larger than the first determination value.Type: GrantFiled: October 31, 2012Date of Patent: October 17, 2017Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Takeaki Suzuki, Masaki Matsunaga, Yasunari Kido, Takayuki Kogure, Yukari Okamura, Rentaro Kuroki, Takuya Hirai, Masaki Mitsuyasu, Jonggap Kim, Akihiro Sato, Yusuke Kinoshita
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Patent number: 9752971Abstract: A viscosity measuring apparatus is mounted on a vehicle provided with an engine, a cylinder pressure sensor configured to detect cylinder pressure which is inner pressure of a cylinder of the engine, a fuel injection valve configured to supply fuel to the engine, and a temperature sensor configured to detect temperature of a coolant of the engine. The viscosity measuring apparatus is provided with: an estimating device configured to calculate a cooling loss from a heating value of the cylinder based on the cylinder pressure detected by the cylinder pressure sensor and an input heating value of the cylinder, and to estimate viscosity of the coolant on the basis of the calculated cooling loss.Type: GrantFiled: June 18, 2012Date of Patent: September 5, 2017Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Sho Tomita, Rentaro Kuroki
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Patent number: 9694821Abstract: An upper limit value of an upward gradient of a road surface for starting neutral coasting is set to be larger than an upper limit of the upward gradient of the road surface for starting free-run coasting, so, when the upward gradient is relatively large and a coasting distance is short, the vehicle is caused to travel in the neutral coasting, and stop and restart of the engine are not carried out. Therefore, a decrease in drivability of the vehicle is suppressed. When the upward gradient is relatively small and the coasting distance is long, the vehicle is caused to travel in the free-run coasting, and supply of fuel to the engine is stopped, so fuel economy of the vehicle is obtained. Thus, it is possible to achieve both fuel economy and drivability of the vehicle during coasting on an upward gradient.Type: GrantFiled: October 15, 2013Date of Patent: July 4, 2017Assignee: Toyota Jidosha Kabushiki KaishaInventors: Takeaki Suzuki, Masaki Matsunaga, Yasunari Kido, Takayuki Kogure, Yukari Okamura, Rentaro Kuroki, Takuya Hirai, Masaki Mitsuyasu, Jonggap Kim, Akihiro Sato, Yusuke Kinoshita
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Patent number: 9656676Abstract: A running control device of a vehicle including an engine, a connecting/disconnecting device separating the engine and wheels, and a transmission transmitting power of the engine toward the wheels, the running control device of a vehicle being configured to execute a normal running mode performed by using the power of the engine with the engine and the wheels coupled, a free-run inertia running mode that is an inertia running mode performed by separating the engine and the wheels and stopping the engine during running, and a neutral inertia running mode that is an inertia running mode performed by separating the engine and the wheels and operating the engine in a self-sustaining manner during running, the running control device of a vehicle setting a gear ratio of the transmission on a high vehicle speed side in the case of return from the free-run inertia running mode to the normal running mode.Type: GrantFiled: October 31, 2012Date of Patent: May 23, 2017Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Masaki Mitsuyasu, Jonggap Kim, Rentaro Kuroki, Takuya Hirai, Masaki Matsunaga, Yasunari Kido, Takeaki Suzuki, Takayuki Kogure, Yukari Okamura, Akihiro Sato, Yusuke Kinoshita
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Patent number: 9656670Abstract: A running control device of a vehicle includes an engine, a connecting/disconnecting device separating the engine and wheels, and a transmission transmitting power of the engine toward the wheels, the running control device being configured to execute a normal running-mode performed by using the power of the engine with the engine and the wheels coupled, a free-run inertia running-mode that is performed by separating the engine and the wheels and stopping the engine during running, and a neutral inertia running-mode that is a performed by separating the engine and the wheels and operating the engine in a self-sustaining manner during running, the running control device setting a gear ratio of the transmission on a low vehicle speed side in the case of return from the free-run inertia running-mode to the normal running-mode as compared to the case of return from the neutral inertia running-mode to the normal running-mode.Type: GrantFiled: October 31, 2012Date of Patent: May 23, 2017Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Masaki Mitsuyasu, Jonggap Kim, Rentaro Kuroki, Takuya Hirai, Masaki Matsunaga, Yasunari Kido, Takeaki Suzuki, Takayuki Kogure, Yukari Okamura, Akihiro Sato, Yusuke Kinoshita
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Patent number: 9650046Abstract: A running control device of a vehicle includes an engine, a clutch separating the engine and wheels, and a torque converter with a lockup clutch transmitting power of the engine toward the wheels, the running control device of a vehicle is configured to execute a neutral inertia running mode that is an inertia running mode performed while the engine and the wheels are separated and a cylinder resting inertia running mode performed by stopping operation in at least some of cylinders of the engine while the engine and the wheels are coupled, the lockup clutch has a weak engagement force while the neutral inertia running mode is performed as compared to while the cylinder resting inertia running mode is performed.Type: GrantFiled: October 31, 2012Date of Patent: May 16, 2017Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Jonggap Kim, Masaki Mitsuyasu, Rentaro Kuroki, Takuya Hirai, Masaki Matsunaga, Yasunari Kido, Takeaki Suzuki, Takayuki Kogure, Yukari Okamura, Akihiro Sato, Yusuke Kinoshita
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Patent number: 9623870Abstract: A running control device of a vehicle includes an engine and a brake booster amplifying a brake force by forming a negative pressure in a negative pressure tank by rotation of the engine. The running control device is configured to execute an engine brake running mode performed with the engine coupled to wheels such that an engine brake is applied by driven rotation of the engine and an inertia running mode performed with an engine brake force made lower than that of the engine brake running mode. The running control device executes a first inertia running mode performed with the rotation of the engine stopped and a second inertia running mode performed with the engine kept rotating as the inertia running mode in accordance with predefined respective execution conditions. The running control device comprises a prediction portion configured to predict a necessity of the negative pressure.Type: GrantFiled: October 31, 2012Date of Patent: April 18, 2017Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Rentaro Kuroki, Takuya Hirai, Masaki Mitsuyasu, Jonggap Kim, Masaki Matsunaga, Yasunari Kido, Takeaki Suzuki, Takayuki Kogure, Yukari Okamura, Akihiro Sato, Yusuke Kinoshita
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Patent number: 9598083Abstract: A controller is capable of controlling a coupled engine running mode, in which an engine is coupled to wheels and an engine brake is activated by driven rotation of the engine, and a coasting mode, in which an engine brake force is reduced with respect to that in the coupled engine running mode with mode with the engine brake on, and starts the coasting mode on the basis of the steering angle of a steering member. The controller starts the execution of a first coasting mode when the steering angle is equal to or less than a preset upper limit value and starts the execution of a second coasting mode when the steering angle is greater than the upper limit value. In the first coasting mode, the engine rotation is stopped, and in the second coasting mode, the engine remains rotating.Type: GrantFiled: October 11, 2013Date of Patent: March 21, 2017Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Takeaki Suzuki, Masaki Matsunaga, Yasunari Kido, Takayuki Kogure, Yukari Okamura, Rentaro Kuroki, Takuya Hirai, Masaki Mitsuyasu, Jonggap Kim, Akihiro Sato, Yusuke Kinoshita