Patents by Inventor Teppei YOSHIOKA
Teppei YOSHIOKA 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: 11904837Abstract: A hybrid vehicle includes: an engine; first and second rotating electric machines; a connection/disconnection mechanism; a power storage device; and a control device. Further, when an acceleration request occurs during EV traveling mode, the control device controls, when determining that a predetermined acceleration smaller than a requested acceleration and corresponding to a vehicle speed cannot be generated by torque output by the second rotating electric machine, the torque output by the second rotating electric machine so as to generate an acceleration less than the predetermined acceleration while controlling the torque by the engine and torque by the first rotating electric machine, and when determining that the predetermined acceleration cannot be generated by the torque output by the second rotating electric machine, controls the torque output by the second rotating electric machine so as to generate the acceleration equal to or greater than the predetermined acceleration.Type: GrantFiled: August 13, 2021Date of Patent: February 20, 2024Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Norifumi Takada, Teppei Yoshioka, Hiroki Tsunogawa
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Patent number: 11458950Abstract: A drive force control system configured to reduce a total energy consumption of a hybrid vehicle. The drive force control system calculates: an output power of the engine which can optimize a thermal efficiency given that the engine is operated at a best fuel point; and a required electric power to be supplied from a battery or to be generated by a control motor, which can adjust the drive power established by the output power of the engine to the required power. A power exchange between the control motor and the battery is interrupted if the required electric power to be supplied from the electric storage device or to be generated by the control motor is less than a first predetermined electric power.Type: GrantFiled: January 23, 2020Date of Patent: October 4, 2022Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Ryosuke Ikemura, Naoto Kato, Takayoshi Kawai, Teppei Yoshioka, Hiromasa Hashimoto, Hiroshi Watanabe, Yasuhiro Kuze
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Publication number: 20220055610Abstract: A hybrid vehicle includes: an engine; first and second rotating electric machines; a connection/disconnection mechanism; a power storage device; and a control device. Further, when an acceleration request occurs during EV traveling mode, the control device controls, when determining that a predetermined acceleration smaller than a requested acceleration and corresponding to a vehicle speed cannot be generated by torque output by the second rotating electric machine, the torque output by the second rotating electric machine so as to generate an acceleration less than the predetermined acceleration while controlling the torque by the engine and torque by the first rotating electric machine, and when determining that the predetermined acceleration cannot be generated by the torque output by the second rotating electric machine, controls the torque output by the second rotating electric machine so as to generate the acceleration equal to or greater than the predetermined acceleration.Type: ApplicationFiled: August 13, 2021Publication date: February 24, 2022Inventors: Norifumi Takada, Teppei Yoshioka, Hiroki Tsunogawa
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Publication number: 20200247390Abstract: A drive force control system configured to reduce a total energy consumption of a hybrid vehicle. The drive force control system calculates: an output power of the engine which can optimize a thermal efficiency given that the engine is operated at a best fuel point; and a required electric power to be supplied from a battery or to be generated by a control motor, which can adjust the drive power established by the output power of the engine to the required power. A power exchange between the control motor and the battery is interrupted if the required electric power to be supplied from the electric storage device or to be generated by the control motor is less than a first predetermined electric power.Type: ApplicationFiled: January 23, 2020Publication date: August 6, 2020Inventors: Ryosuke IKEMURA, Naoto KATO, Takayoshi KAWAI, Teppei YOSHIOKA, Hiromasa HASHIMOTO, Hiroshi WATANABE, Yasuhiro KUZE
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Patent number: 10710446Abstract: An engine starting system for starting an engine promptly during propulsion without reducing a drive force. When a condition to crank the engine is satisfied during propulsion in a neutral stage, torque is applied to an input rotary element to crank the engine by reducing a rotational speed of a control rotary element by increasing a torque capacity of a first engagement device to utilize an inertial force of the free rotary element as a reaction force.Type: GrantFiled: January 31, 2019Date of Patent: July 14, 2020Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Takayoshi Kawai, Naoto Kato, Naoya Takagi, Yasuhiro Kuze, Teruhiko Miyake, Teppei Yoshioka
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Patent number: 10639984Abstract: A vehicle control system, in which that maintains a reaction force against the backward movement of a vehicle while preventing an overheating of a motor due to phase lock of the motor. When a thermal load on a specific phase of the motor exceeds a threshold value, a controller execute a phase shift control to reduce a thermal load on a specific phase of the motor by changing a rotational angle of the motor, while interrupting torque transmission between the motor and wheels and generating the torque to stop the vehicle by the actuator.Type: GrantFiled: November 5, 2018Date of Patent: May 5, 2020Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yasuhiro Kuze, Naoya Takagi, Teruhiko Miyake, Naoto Kato, Takayoshi Kawai, Teppei Yoshioka
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Patent number: 10526980Abstract: To improve accuracy in misfire determination, a control apparatus for an internal combustion engine that controls an internal combustion engine having a variable compression ratio mechanism capable of changing the compression ratio of the internal combustion engine includes a controller configured to: determine that a misfire occurs if the magnitude of rotational fluctuation of the internal combustion engine is equal to or larger than a misfire criterion value and to make the misfire criterion value larger during the time in which changing of the compression ratio of the internal combustion engine is in progress than during the time in which the compression ratio is not being changed.Type: GrantFiled: July 26, 2017Date of Patent: January 7, 2020Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Keisuke Sasaki, Akira Eiraku, Masanori Hattori, Yoshiyuki Kageura, Teppei Yoshioka, Shinichi Hiraoka
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Publication number: 20190263249Abstract: An engine starting system for starting an engine promptly during propulsion without reducing a drive force. When a condition to crank the engine is satisfied during propulsion in a neutral stage, torque is applied to an input rotary element to crank the engine by reducing a rotational speed of a control rotary element by increasing a torque capacity of a first engagement device to utilize an inertial force of the free rotary element as a reaction force.Type: ApplicationFiled: January 31, 2019Publication date: August 29, 2019Applicant: Toyota Jidosha Kabushiki KaishaInventors: Takayoshi KAWAI, Naoto Kato, Naoya Takagi, Yasuhiro Kuze, Teruhiko Miyake, Teppei Yoshioka
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Publication number: 20190135103Abstract: A vehicle control system, in which that maintains a reaction force against the backward movement of a vehicle while preventing an overheating of a motor due to phase lock of the motor. When a thermal load on a specific phase of the motor exceeds a threshold value, a controller execute a phase shift control to reduce a thermal load on a specific phase of the motor by changing a rotational angle of the motor, while interrupting torque transmission between the motor and wheels and generating the torque to stop the vehicle by the actuator.Type: ApplicationFiled: November 5, 2018Publication date: May 9, 2019Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yasuhiro KUZE, Naoya TAKAGI, Teruhiko MIYAKE, Naoto KATO, Takayoshi KAWAI, Teppei YOSHIOKA
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Publication number: 20180038297Abstract: A control system is applied to an internal combustion engine having a plurality of cylinders, a variable compression ratio changer configured to change the compression ratio of each of the cylinders of the internal combustion engine individually, in-cylinder injection valves that inject fuel into the respective cylinders, and in-passage injection valves each of which injects fuel into an intake passage corresponding to each of the cylinders. To reduce differences in the air-fuel ratio among the cylinders during changing the compression ratio, the control system makes the proportion of the quantity of fuel injected through the in-passage injection valves to the total quantity of fuel injected through the in-cylinder injection valves and the in-passage injection valves larger during the time in which the compression ratios of all the cylinders are being changed than during the time in which the compression ratios of all the cylinders are fixed.Type: ApplicationFiled: August 1, 2017Publication date: February 8, 2018Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Keisuke SASAKI, Akira EIRAKU, Masanori HATTORI, Yoshiyuki KAGEURA, Teppei YOSHIOKA, Shinichi HIRAOKA
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Publication number: 20180030906Abstract: To improve accuracy in misfire determination, a control apparatus for an internal combustion engine that controls an internal combustion engine having a variable compression ratio mechanism capable of changing the compression ratio of the internal combustion engine includes a controller configured to: determine that a misfire occurs if the magnitude of rotational fluctuation of the internal combustion engine is equal to or larger than a misfire criterion value and to make the misfire criterion value larger during the time in which changing of the compression ratio of the internal combustion engine is in progress than during the time in which the compression ratio is not being changed.Type: ApplicationFiled: July 26, 2017Publication date: February 1, 2018Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Keisuke SASAKI, Akira EIRAKU, Masanori HATTORI, Yoshiyuki KAGEURA, Teppei YOSHIOKA, Shinichi HIRAOKA