Patents by Inventor Jonggap Kim
Jonggap Kim 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: 11807237Abstract: A vehicle control system configured to control deceleration of a vehicle properly according to a driver's intention in one-pedal mode. In the one-pedal mode, a controller controls deceleration of the vehicle based on a deceleration level set in accordance with a speed of the vehicle. If the brake pedal is manipulated to decelerate the vehicle while the vehicle is operated in the one-pedal mode and an operating amount of an accelerator pedal falls within the decelerating range, the controller updates the deceleration level based on an operation of the brake pedal.Type: GrantFiled: September 13, 2021Date of Patent: November 7, 2023Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Jonggap Kim, Hiromitsu Metsugi
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Publication number: 20220111844Abstract: A vehicle control system configured to control deceleration of a vehicle properly according to a driver's intention in one-pedal mode. In the one-pedal mode, a controller controls deceleration of the vehicle based on a deceleration level set in accordance with a speed of the vehicle. If the brake pedal is manipulated to decelerate the vehicle while the vehicle is operated in the one-pedal mode and an operating amount of an accelerator pedal falls within the decelerating range, the controller updates the deceleration level based on an operation of the brake pedal.Type: ApplicationFiled: September 13, 2021Publication date: April 14, 2022Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Jonggap KIM, Hiromitsu METSUGI
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Patent number: 11292451Abstract: A hybrid vehicle in which a running mode can be appropriately shifted without making a driver feel uncomfortable or feel a sense of slowness. A hybrid vehicle includes an engine, a first motor, a second motor, and a clutch that selectively transmits power between the engine and drive wheels. A controller shifts a running mode to the parallel hybrid vehicle mode in a case of accelerating the hybrid vehicle in the electric vehicle mode, if the drive force is greater than a maximum drive force generatable in the electric vehicle mode, and also greater than a required additional drive force as a variable corresponding to a running resistance against the hybrid vehicle running on a predetermined running road at a predetermined vehicle speed by a predetermined drive force that is set in advance based on the vehicle speed and the drive force.Type: GrantFiled: October 31, 2018Date of Patent: April 5, 2022Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Atsuhiko Yokota, Hideo Watanabe, Kazumi Hoshiya, Satoshi Yamanaka, Jonggap Kim
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Patent number: 11180131Abstract: A control system for hybrid vehicles for reducing a shock caused by a change in an output torque of a transmission during a shifting operation of a transmission. In the hybrid vehicle, an engine and a first motor are connected to an input side of an automatic transmission, and a second motor is connected to an output side of the automatic transmission. A controller calculates a change in an output torque of the transmission when establishing a predetermined gear stage, based on a torque capacity of an engagement device to be engaged and an input torque to the transmission, and select one of the first motor and the second motor that requires less power to reduce the change in the output torque of the automatic transmission.Type: GrantFiled: November 8, 2018Date of Patent: November 23, 2021Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Jonggap Kim
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Patent number: 10800400Abstract: A control system for hybrid vehicles configured to improve an acceleration feeling or enhance acceleration. In the hybrid vehicle, an engine and a first motor are connected to an input side of a transmission, and a second motor is connected to drive wheels. A controller is configured to selectively execute a first assist control to raise an input speed to the transmission by the first motor, and a second assist control to increase an output torque of the second motor, depending on a required drive force.Type: GrantFiled: November 16, 2018Date of Patent: October 13, 2020Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Jonggap Kim
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Patent number: 10605359Abstract: A shift control device for establishing a desired gear stage promptly while reducing a shock, during propulsion while disengaging all of engagement devices of a transmission. The shift control system compares a target stage set based on an operating data to an interim stage set based on the operating data immediately before the target stage is set. If the target stage is lower than the initial stage the engagement devices are engaged to establish the target stage without establishing the initial stage.Type: GrantFiled: November 21, 2018Date of Patent: March 31, 2020Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Jonggap Kim, Kazumi Hoshiya, Atsuhiko Yokota, Satoshi Yamanaka
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Publication number: 20190170245Abstract: A shift control device for establishing a desired gear stage promptly while reducing a shock, during propulsion while disengaging all of engagement devices of a transmission. The shift control system compares a target stage set based on an operating data to an interim stage set based on the operating data immediately before the target stage is set. If the target stage is lower than the initial stage the engagement devices are engaged to establish the target stage without establishing the initial stage.Type: ApplicationFiled: November 21, 2018Publication date: June 6, 2019Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Jonggap KIM, Kazumi HOSHIYA, Atsuhiko YOKOTA, Satoshi YAMANAKA
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Publication number: 20190152469Abstract: A control system for hybrid vehicles configured to improve an acceleration feeling or enhance acceleration. In the hybrid vehicle, an engine and a first motor are connected to an input side of a transmission, and a second motor is connected to drive wheels. A controller is configured to selectively execute a first assist control to raise an input speed to the transmission by the first motor, and a second assist control to increase an output torque of the second motor, depending on a required drive force.Type: ApplicationFiled: November 16, 2018Publication date: May 23, 2019Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Jonggap KIM
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Publication number: 20190135267Abstract: A control system for hybrid vehicles for reducing a shock caused by a change in an output torque of a transmission during a shifting operation of a transmission. In the hybrid vehicle, an engine and a first motor are connected to an input side of an automatic transmission, and a second motor is connected to an output side of the automatic transmission. A controller calculates a change in an output torque of the transmission when establishing a predetermined gear stage, based on a torque capacity of an engagement device to be engaged and an input torque to the transmission, and select one of the first motor and the second motor that requires less power to reduce the change in the output torque of the automatic transmission.Type: ApplicationFiled: November 8, 2018Publication date: May 9, 2019Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Jonggap KIM
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Publication number: 20190126908Abstract: A hybrid vehicle in which a running mode can be appropriately shifted without making a driver feel uncomfortable or feel a sense of slowness. A hybrid vehicle includes an engine, a first motor, a second motor, and a clutch that selectively transmits power between the engine and drive wheels. A controller shifts a running mode to the parallel hybrid vehicle mode in a case of accelerating the hybrid vehicle in the electric vehicle mode, if the drive force is greater than a maximum drive force generatable in the electric vehicle mode, and also greater than a required additional drive force as a variable corresponding to a running resistance against the hybrid vehicle running on a predetermined running road at a predetermined vehicle speed by a predetermined drive force that is set in advance based on the vehicle speed and the drive force.Type: ApplicationFiled: October 31, 2018Publication date: May 2, 2019Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Atsuhiko YOKOTA, Hideo WATANABE, Kazumi HOSHIYA, Satoshi YAMANAKA, Jonggap KIM
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Patent number: 10221942Abstract: Provided is a shift control device for a vehicle in which an automatic transmission in which a gear stage is set based on data showing traveling states including at least a driving demand is mounted, the shift control device for a vehicle setting a neutral state where power is not transmitted by releasing an engagement mechanism engaged such that a predetermined gear stage is set in the automatic transmission when the driving demand becomes equal to or less than a predetermined value determined in advance during traveling, in which the shift control device for a vehicle is configured such that a virtual gear stage as an input rotation speed close to an input rotation speed of the automatic transmission in the neutral state is obtained based on a vehicle speed at a time point when the virtual gear stage is obtained and a gear ratio at a gear stage allowed to be set in the automatic transmission when a target gear stage based on the driving demand is set with the neutral state eliminated by the driving demand eType: GrantFiled: May 7, 2013Date of Patent: March 5, 2019Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Jonggap Kim, Yoshio Ito
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Patent number: 10196065Abstract: A vehicle control system is provided to promptly execute an ignition retard of the engine during shifting a gear stage in such a manner as to prevent an engine misfire, while switching air/fuel ratio from lean-burn ratio to stoichiometric ratio. An air/fuel ratio is switched between a stoichiometric ratio and a lean-burn ratio based on an operating point of an engine determined based on an engine speed and an engine torque. If a shifting operation of gear stage and a switching operation of the air/fuel ratio from the lean-burn ratio to the stoichiometric ratio are expected to be executed simultaneously, a controller delays the shifting operation of gear stage until completion of the switching operation of the air/fuel ratio.Type: GrantFiled: October 18, 2016Date of Patent: February 5, 2019Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Jonggap Kim, Hideo Watanabe
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Patent number: 10006522Abstract: A control device for an automatic transmission is provided. The automatic transmission is configured to realize a plurality of gear shift stages by combination of a plurality of engaging devices engaged or released among the plurality of engaging devices. The control device includes an electronic control unit. The electronic control unit is configured to select, as the setting pattern realizing an intermediate gear shift stage, the setting pattern with a smaller number of switching of the engagement or release of the engaging device than the number of switching of the setting pattern with the largest number of switching among the plurality of setting patterns when a shift is performed from a first gear shift stage to a second gear shift stage through the intermediate gear shift stage in a case where the electronic control unit determines that the shift is to be performed through the intermediate gear shift stage.Type: GrantFiled: June 27, 2016Date of Patent: June 26, 2018Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Jonggap Kim, Masami Kondo, Hideo Watanabe
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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: 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: 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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Publication number: 20170113690Abstract: A vehicle control system is provided to promptly execute an ignition retard of the engine during shifting a gear stage in such a manner as to prevent an engine misfire, while switching air/fuel ratio from lean-burn ratio to stoichiometric ratio. An air/fuel ratio is switched between a stoichiometric ratio and a lean-burn ratio based on an operating point of an engine determined based on an engine speed and an engine torque. If a shifting operation of gear stage and a switching operation of the air/fuel ratio from the lean-burn ratio to the stoichiometric ratio are expected to be executed simultaneously, a controller delays the shifting operation of gear stage until completion of the switching operation of the air/fuel ratio.Type: ApplicationFiled: October 18, 2016Publication date: April 27, 2017Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Jonggap KIM, Hideo WATANABE