Patents by Inventor Tetsuhiro Narita
Tetsuhiro Narita 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: 11932240Abstract: A control unit performs a lane departure suppression control when a host vehicle is about to depart from a traveling lane. The control unit determines whether a low impact collision has occurred. The control unit performs a secondary collision damage mitigation control when the low impact collision is determined to have occurred while the lane departure suppression control is being performed.Type: GrantFiled: October 8, 2020Date of Patent: March 19, 2024Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yusuke Mase, Hideyuki Usui, Masakatsu Onitsuka, Yoshiaki Moriya, Jiro Ohachi, Yuki Tomiku, Tetsuhiro Narita, Yuji Misumi
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Patent number: 11654901Abstract: A control unit determines whether a rapid acceleration pedal depression operation has been performed. The control unit determines whether a low impact collision has occurred. When it is determined that the rapid acceleration pedal depression operation has been performed and the low impact collision has occurred, the control unit executes a secondary collision damage mitigation control. Consequently, the secondary collision damage mitigation control can be appropriately executed even when a collision that does not cause an air bag to be inflated has occurred.Type: GrantFiled: December 23, 2020Date of Patent: May 23, 2023Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yusuke Mase, Hideyuki Usui, Yoshiaki Moriya, Jiro Ohachi, Yuki Tomiku, Yuji Misumi, Tetsuhiro Narita, Masakatsu Onitsuka
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Patent number: 11254321Abstract: A driving assist apparatus comprises a driver monitor sensor which detects a state of a driver of an own vehicle installed with the driving assist apparatus. The apparatus determines whether the driver is in a drowsy state, based on the state of the driver detected by the driver monitor sensor. The apparatus determines that a light collision occurs when a light collision determination condition that at least one collision index value representing a level of a collision of the own vehicle is larger than a light collision determination threshold at which an airbag is not developed, is satisfied. The apparatus executes a secondary collision damage mitigation control to apply a braking force to the own vehicle or limit a driving force applied to the own vehicle when determining that the driver is in the drowsy state, and the light collision occurs.Type: GrantFiled: September 9, 2020Date of Patent: February 22, 2022Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yusuke Mase, Hideyuki Usui, Yoshiaki Moriya, Jiro Ohachi, Yuki Tomiku, Yuji Misumi, Tetsuhiro Narita, Masakatsu Onitsuka
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Publication number: 20210221365Abstract: A control unit determines whether a rapid acceleration pedal depression operation has been performed. The control unit determines whether a low impact collision has occurred. When it is determined that the rapid acceleration pedal depression operation has been performed and the low impact collision has occurred, the control unit executes a secondary collision damage mitigation control. Consequently, the secondary collision damage mitigation control can be appropriately executed even when a collision that does not cause an air bag to be inflated has occurred.Type: ApplicationFiled: December 23, 2020Publication date: July 22, 2021Inventors: Yusuke MASE, Hideyuki USUI, Yoshiaki MORIYA, Jiro OHACHI, Yuki TOMIKU, Yuji MISUMI, Tetsuhiro NARITA, Masakatsu ONITSUKA
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Publication number: 20210221364Abstract: A control unit performs a lane departure suppression control when a host vehicle is about to depart from a traveling lane. The control unit determines whether a low impact collision has occurred. The control unit performs a secondary collision damage mitigation control when the low impact collision is determined to have occurred while the lane departure suppression control is being performed.Type: ApplicationFiled: October 8, 2020Publication date: July 22, 2021Inventors: Yusuke MASE, Hideyuki USUI, Masakatsu ONITSUKA, Yoshiaki MORIYA, Jiro OHACHI, Yuki TOMIKU, Tetsuhiro NARITA, Yuji MISUMI
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Publication number: 20210221383Abstract: A driving assist apparatus comprises a driver monitor sensor which detects a state of a driver of an own vehicle installed with the driving assist apparatus. The apparatus determines whether the driver is in a drowsy state, based on the state of the driver detected by the driver monitor sensor. The apparatus determines that a light collision occurs when a light collision determination condition that at least one collision index value representing a level of a collision of the own vehicle is larger than a light collision determination threshold at which an airbag is not developed, is satisfied. The apparatus executes a secondary collision damage mitigation control to apply a braking force to the own vehicle or limit a driving force applied to the own vehicle when determining that the driver is in the drowsy state, and the light collision occurs.Type: ApplicationFiled: September 9, 2020Publication date: July 22, 2021Inventors: Yusuke MASE, Hideyuki USUI, Yoshiaki MORIYA, Jiro OHACHI, Yuki TOMIKU, Yuji MISUMI, Tetsuhiro NARITA, Masakatsu ONITSUKA
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Patent number: 9540038Abstract: A control apparatus for controlling a vehicle which is provided with a braking/driving force varying device capable of individually changing a braking/driving force acting on each of wheels (FL, FR, RL, RR) with respect to each wheel.Type: GrantFiled: June 30, 2010Date of Patent: January 10, 2017Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Toru Takashima, Norihisa Nishikawa, Mitsutaka Tanimoto, Tetsuhiro Narita
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Patent number: 8996254Abstract: A vehicle motion control apparatus which is configured to control a motion of a vehicle comprising a plurality of apparatuses, each of which is configured to selectively control a slip angle or a yaw rate, is provided with: a behavior controlling device which is configured to perform behavior control in which a plurality of apparatuses are controlled such that a slip angle and a yaw rate are a set target slip angle and a target yaw rate, respectively; a turning state quantity specifying device which is configured to specify a turning state quantity of the vehicle; and a selecting device which is configured to select at least one of the slip angle and the yaw rate to be prioritized, on the basis of the specified turning state quantity in a case where the behavior control needs to be performed by one of the plurality of apparatuses.Type: GrantFiled: December 1, 2010Date of Patent: March 31, 2015Assignee: Toyota Jidosha Kabushiki KaishaInventors: Norihisa Nishikawa, Mitsutaka Tanimoto, Yoshitaka Fujita, Toru Takashima, Tetsuhiro Narita, Go Inoue, Takahiro Kojo
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Patent number: 8573711Abstract: A vehicle braking apparatus that can exert high braking performance during vehicle braking is implemented by a control mode that can be realized in a braking apparatus (10) of usual hardware. In controlling the braking apparatus (10) of a vehicle, a climb rate of a wheel cylinder braking oil pressure (Pw) is decreased smaller than a climb rate corresponding to a climb rate of a master cylinder oil pressure (Pm) from a time point at which the wheel cylinder braking oil pressure (Pw) reaches a predetermined threshold value. The time point at which the wheel cylinder braking oil pressure (Pw) reaches the predetermined threshold value (P3) is estimated based on the climb process of the master cylinder oil pressure (Pm) or directly detected.Type: GrantFiled: January 15, 2009Date of Patent: November 5, 2013Assignee: Toyota Jidosha Kabushiki KaishaInventors: Hidehisa Kato, Junji Kawamuro, Tetsuhiro Narita
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Publication number: 20130253770Abstract: A vehicle motion control apparatus which is configured to control a motion of a vehicle comprising a plurality of apparatuses, each of which is configured to selectively control a slip angle or a yaw rate, is provided with: a behavior controlling device which is configured to perform behavior control in which a plurality of apparatuses are controlled such that a slip angle and a yaw rate are a set target slip angle and a target yaw rate, respectively; a turning state quantity specifying device which is configured to specify a turning state quantity of the vehicle; and a selecting device which is configured to select at least one of the slip angle and the yaw rate to be prioritized, on the basis of the specified turning state quantity in a case where the behavior control needs to be performed by one of the plurality of apparatuses.Type: ApplicationFiled: December 1, 2010Publication date: September 26, 2013Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Norihisa Nishikawa, Mitsutaka Tanimoto, Yoshitaka Fujita, Toru Takashima, Tetsuhiro Narita, Go Inoue, Takahiro Kojo
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Publication number: 20130226410Abstract: A braking control apparatus is mounted on a vehicle provided with: a wheel angle varying device capable of changing a wheel angle of at least one of front wheels and rear wheels, independently of steering by a driver for facilitating a change in the wheel angle; a braking force varying device capable of changing a left-right braking force difference of at least one of the front wheels and the rear wheels; and a controlling device for controlling each of the wheel angle varying device and the braking force varying device. The braking control apparatus is provided with: a limiting device for changing a limit of the left-right braking force difference of the at least one of the front wheels and the rear wheels in accordance with whether or not the wheel angle varying device can operate.Type: ApplicationFiled: November 4, 2010Publication date: August 29, 2013Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Tetsuhiro Narita, Mitsutaka Tanimoto, Yoshitaka Fujita, Yoshiaki Tsuchiya
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Publication number: 20130103264Abstract: A control apparatus for controlling a vehicle which is provided with a braking/driving force varying device capable of individually changing a braking/driving force acting on each of wheels (FL, FR, RL, RR) with respect to each wheel.Type: ApplicationFiled: June 30, 2010Publication date: April 25, 2013Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Toru Takashima, Norihisa Nishikawa, Mitsutaka Tanimoto, Tetsuhiro Narita
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Patent number: 8007054Abstract: A control unit 20 includes an initial current value calculation unit 22 for calculating an initial current value when a caliper pressure shifts to a pressure increasing state, a target current value setting unit 23 which, when no pressure increasing cycle was performed last time, estimates a road surface friction coefficient, determines a target differential pressure based on the road surface friction coefficient so estimated, and sets a current value corresponding to this target differential pressure as a target current value, and a valve opening amount adjusting unit 25 which reduces an energization amount from the initial current value towards the target current value with a predetermined gradient.Type: GrantFiled: July 14, 2008Date of Patent: August 30, 2011Assignee: Nissin Kogyo Co., Ltd.Inventors: Masashi Kobayashi, Tetsuhiro Narita, Tomonori Hirose, Tomoaki Sekiya
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Publication number: 20110184620Abstract: A vehicle braking apparatus that can exert high braking performance during vehicle braking is implemented by a control mode that can be realized in a braking apparatus. In controlling the braking apparatus of a vehicle, a climb rate of a wheel cylinder braking oil pressure is decreased smaller than a climb rate corresponding to a climb rate of a master cylinder oil pressure from a time point at which the wheel cylinder braking oil pressure reaches a predetermined threshold value. The time point at which the wheel cylinder braking oil pressure reaches the predetermined threshold value is estimated based on the climb process of the master cylinder oil pressure or directly detected.Type: ApplicationFiled: January 15, 2009Publication date: July 28, 2011Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hidehisa Kato, Junji Kawamuro, Tetsuhiro Narita
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Patent number: 7661773Abstract: A method of braking force distribution and a braking force control system for a vehicle provide a proper control on distribution between braking force between front wheels and rear wheels by controlling braking force on a rear right wheel and a rear left wheel such that an actual wheel speed of each rear wheel follows a target wheel speed thereof. The method includes the steps of calculating a current target wheel speed of each rear wheel to be used based on an actual deceleration speed of at least one of the front wheels and a previous target wheel speed of each rear wheel; and controlling braking force on each of the rear wheels based on the thus calculated current target wheel speed.Type: GrantFiled: July 26, 2006Date of Patent: February 16, 2010Assignees: Nissin Kogyo Co., Ltd., Honda Motor Co., Ltd.Inventors: Tetsuhiro Narita, Susumu Takahashi, Takeshi Kojima
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Publication number: 20090021072Abstract: A the control unit 20 includes an initial current value calculation unit 22 for calculating an initial current value when a caliper pressure shifts to a pressure increasing state, a target current value setting unit 23 which, when no pressure increasing cycle was performed last time, estimates a road surface friction coefficient, determines a target differential pressure based on the road surface friction coefficient so estimated, and sets a current value corresponding to this target differential pressure as a target current value, and a valve opening amount adjusting unit 25 which reduces an energization amount from the initial current value towards the target current value with a predetermined gradient.Type: ApplicationFiled: July 14, 2008Publication date: January 22, 2009Applicant: NISSIN KOGYO CO., LTD.Inventors: Masashi Kobayashi, Tetsuhiro Narita, Tomonori Hirose, Tomoaki Sekiya
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Publication number: 20070024114Abstract: A method of braking force distribution and a braking force control system for a vehicle provide a proper control on distribution between braking force between front wheels and rear wheels by controlling braking force on a rear right wheel and a rear left wheel such that an actual wheel speed of each rear wheel follows a target wheel speed thereof. The method includes the steps of calculating a current target wheel speed of each rear wheel to be used based on an actual deceleration speed of at least one of the front wheels and a previous target wheel speed of each rear wheel; and controlling braking force on each of the rear wheels based on the thus calculated current target wheel speed.Type: ApplicationFiled: July 26, 2006Publication date: February 1, 2007Applicants: NISSIN KOGYO CO., LTD., HONDA MOTOR CO., LTD.Inventors: Tetsuhiro Narita, Susumu Takahashi, Takeshi Kojima