Patents by Inventor Takeshi Hoshiba
Takeshi Hoshiba 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: 9555705Abstract: An ECU includes a collision determination unit, a condition determination unit, and an output suppression unit. The collision determination unit monitors an acceleration detected by a collision sensor, and determines that a vehicle collision has occurred when the acceleration is greater than a predetermined value. The condition determination unit determines whether or not a vehicular speed absolute value is smaller than a threshold vehicular speed in a determination period lasting from the determination of collision for a predetermined time. The output suppression unit suppresses an output of a vehicle driving force when the vehicular speed absolute value is smaller than the threshold vehicular speed in the determination period.Type: GrantFiled: May 12, 2011Date of Patent: January 31, 2017Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Keiji Kaita, Takeshi Hoshiba, Takahiko Hirasawa
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Patent number: 9393957Abstract: When a collision of a vehicle is detected, a control device performs fuel cut of an engine (14) in a case where the engine (14) is in a driven state, and engages an engine connection/disconnection clutch (K0) in a case where the engine connection/disconnection clutch (K0) is disengaged, whereby the rotational resistance of a motor (MG) is increased by drag of the engine (14) and the rotation speed (Nmg) of the motor (MG) after the collision of the vehicle can be speedily reduced. Consequently, generation of an electromotive force by rotation of the motor (MG) is prevented, and it is possible to speedily complete discharge of an inverter circuit (40).Type: GrantFiled: November 6, 2013Date of Patent: July 19, 2016Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Takeshi Hoshiba
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Patent number: 9254834Abstract: An ECU executes a program including the steps of: executing fuel-cut control when an IG OFF operation has been performed and a vehicle is traveling; determining torque command values of a first MG and a second MG when a charge power upper limit value Win is reduced; controlling the first MG based on the determined torque command value of the first MG; and controlling the second MG based on the determined torque command value of the second MG.Type: GrantFiled: January 27, 2011Date of Patent: February 9, 2016Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hideaki Yaguchi, Takeshi Hoshiba, Akihiro Kimura, Masahiro Naito
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Patent number: 9216726Abstract: An ECU executes a program including the steps of: executing fuel-cut control when an IG OFF operation has been performed and when a vehicle is traveling; executing deceleration control when vehicle speed is equal to or higher than a threshold value; ending the deceleration control and permitting restart of an engine when the vehicle speed has become lower than the threshold value; and controlling a first MG and the engine when an IG ON operation has been performed.Type: GrantFiled: January 27, 2011Date of Patent: December 22, 2015Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hideaki Yaguchi, Takeshi Hoshiba, Akihiro Kimura, Masahiro Naito
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Patent number: 9132831Abstract: In a vehicle with a driving power source (an engine, a motor generator, or a similar component) to output driving power for running to a driving wheel, in a case where a restart is requested on the driving power source in an accelerator-on state after a stop operation is performed on the driving power source (a hybrid system) during running of a vehicle, the driving power corresponding to an accelerator position at the time of restart request is not directly output. Instead, the driving power is output to the driving wheels while being gradually increased. This reduces deterioration of drivability in recovery of the driving power.Type: GrantFiled: October 27, 2011Date of Patent: September 15, 2015Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Takeshi Hoshiba
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Publication number: 20150217764Abstract: When a collision of a vehicle is detected, a control device performs fuel cut of an engine (14) in a case where the engine (14) is in a driven state, and engages an engine connection/disconnection clutch (KO) in a case where the engine connection/disconnection clutch (KO) is disengaged, whereby the rotational resistance of a motor (MG) is increased by drag of the engine (14) and the rotation speed (Nmg) of the motor (MG) after the collision of the vehicle can be speedily reduced. Consequently, generation of an electromotive force by rotation of the motor (MG) is prevented, and it is possible to speedily complete discharge of an inverter circuit (40).Type: ApplicationFiled: November 6, 2013Publication date: August 6, 2015Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Takeshi Hoshiba
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Patent number: 9086949Abstract: During the deactivation of a driving system of a vehicle, an ECU determines whether or not a P range abnormality occurs which exhibits that a shift signal transmitted from a shift position sensor includes a P signal and an MJ signal corresponding to the P range as well as a different-type signal other than the P signal and the MJ signal. When the P range abnormality occurs, the ECU determines whether or not the vehicle-stopped state can be assured based on whether or not a brake-ON state (a hydraulic braking force or a parking braking force are beyond the range capable of maintaining vehicle-stopped state) is present. In a case where a P range abnormality occurs, when ECU determines that the vehicle-stopped state can be assured, the ECU allows the activation of the driving system.Type: GrantFiled: February 14, 2011Date of Patent: July 21, 2015Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Keiji Kaita, Masaya Amano, Takeshi Hoshiba, Koji Hokoi, Takahiko Hirasawa, Masashi Yoshimi
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Patent number: 9086142Abstract: An ECU determines whether or not there is an abnormality (shift pattern abnormality) in a combination of shift signals provided from a shift position sensor. After occurrence of the shift pattern abnormality is determined, the ECU determines whether or not a first condition that a shift pattern changes into a normal pattern of a drive range is satisfied, and whether or not a second condition that a vehicle is running (a driver has an intention to cause the vehicle to run) is satisfied. When occurrence of the shift pattern abnormality is determined, the ECU stops generation of driving force of the vehicle and prohibits switching to the drive range. When the above-mentioned first condition and second condition are satisfied after occurrence of the shift pattern abnormality is determined, the ECU switches the shift range to the drive range indicated by the shift pattern and recovers the driving force.Type: GrantFiled: February 4, 2011Date of Patent: July 21, 2015Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Keiji Kaita, Nobuyuki Tanaka, Masaya Amano, Koji Hokoi, Masashi Yoshimi, Takeshi Hoshiba, Takahiko Hirasawa
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Patent number: 9067584Abstract: A vehicle is provided with a differential gear including a sun gear, a carrier, and a ring gear, motor generators coupled to the sun gear, an engine coupled to the carrier, and a wheel coupled to the ring gear. The vehicle includes an ECU that stops the engine upon operation of a start switch by a driver, and a brake that brakes the sun gear upon operation of the start switch while the vehicle is traveling.Type: GrantFiled: January 27, 2011Date of Patent: June 30, 2015Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hideaki Yaguchi, Takeshi Hoshiba, Akihiro Kimura, Masahiro Naito
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Publication number: 20150065297Abstract: In a first slip suppression control by a first slip suppression control unit when a vehicle stops on a slope, an electronic control unit controls an output torque of an electric motor so that a rotation speed of an input rotation member of a hydraulic power transmission reaches a predetermined target rotation speed during stopping of an engine. The electronic control unit starts the engine when the output torque of the electric motor is greater than a predetermined torque. Accordingly, when the output torque of the electric motor at a rotation speed under a slip suppression control is insufficient, the output torque of the engine can be used and thus a locked state of the electric motor is appropriately prevented.Type: ApplicationFiled: August 26, 2014Publication date: March 5, 2015Inventors: Takeshi Hoshiba, Kenji Uchida, Takeshi Aoki
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Patent number: 8972130Abstract: An ECU determines whether or not there is an abnormality (shift pattern abnormality) in a combination of shift signals provided from a shift position sensor. After occurrence of the shift pattern abnormality is determined, ECU determines whether or not a first condition that a shift pattern has changed into a normal pattern of a drive range, a second condition that a brake is ON and a vehicle is in a stop state is satisfied, and a third condition that an accelerator is OFF are satisfied. When occurrence of the shift pattern abnormality is determined, ECU stops generation of driving force of the vehicle and prohibits switching to the drive range. When ECU determines that the above-mentioned first to third conditions are satisfied after occurrence of the shift pattern abnormality is determined, ECU switches the shift range to the drive range indicated by the shift pattern.Type: GrantFiled: February 14, 2011Date of Patent: March 3, 2015Assignee: Toyota Jidosha Kabushiki KaishaInventors: Keiji Kaita, Masaya Amano, Takeshi Hoshiba, Koji Hokoi, Takahiko Hirasawa
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Patent number: 8960132Abstract: An ECU executes a program including the steps of carrying out low-load control when an IG OFF operation is performed, when a vehicle is running, and when stop of an engine is not permitted, carrying out gate cut-off control, ending low-load control and gate cut-off control when a brake pedal has been operated, when a vehicle speed is lower than a threshold value, or when a prescribed time period has elapsed since the IG OFF operation, permitting stop of the engine, and carrying out fuel cut control.Type: GrantFiled: January 27, 2011Date of Patent: February 24, 2015Assignee: Toyota Jidosha Kabushiki KaishaInventors: Hideaki Yaguchi, Takeshi Hoshiba, Akihiro Kimura, Masahiro Naito
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Publication number: 20140277891Abstract: In a vehicle with a driving power source (an engine, a motor generator, or a similar component) to output driving power for running to a driving wheel, in a case where a restart is requested on the driving power source in an accelerator-on state after a stop operation is performed on the driving power source (a hybrid system) during running of a vehicle, the driving power corresponding to an accelerator position at the time of restart request is not directly output. Instead, the driving power is output to the driving wheels while being gradually increased. This reduces deterioration of drivability in recovery of the driving power.Type: ApplicationFiled: October 27, 2011Publication date: September 18, 2014Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Takeshi Hoshiba
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Patent number: 8838319Abstract: An ECU executes a program including the steps of carrying out fuel cut control when an IG OFF operation is performed and when a vehicle is running, setting a target value Net for an engine rotation speed Ne, carrying out control of a first MG, and ending control of the first MG when a vehicle speed becomes lower than a prescribed vehicle speed.Type: GrantFiled: December 24, 2010Date of Patent: September 16, 2014Assignee: Toyota Jidosha Kabushiki KaishaInventor: Takeshi Hoshiba
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Patent number: 8747280Abstract: There is provided a control device for a vehicle that includes: a driving force source; a hydraulic transmission; and an interrupting mechanism that is able to interrupt power transmission from the driving force source to a drive wheel. The control device includes a controller that is configured to, after the driving force source is stopped while the vehicle is travelling, on the condition that a hydraulic pressure applied to the transmission has decreased, execute control for setting a speed ratio of the transmission to a predetermined low speed ratio, such as a high-speed gear in the case where a low-speed gear and the high-speed gear are provided, while the vehicle is travelling.Type: GrantFiled: October 26, 2012Date of Patent: June 10, 2014Assignee: Toyota Jidosha Kabushiki KaishaInventor: Takeshi Hoshiba
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Publication number: 20140074372Abstract: An ECU includes a collision determination unit, a condition determination unit, and an output suppression unit. The collision determination unit monitors an acceleration detected by a collision sensor, and determines that a vehicle collision has occurred when the acceleration is greater than a predetermined value. The condition determination unit determines whether or not a vehicular speed absolute value is smaller than a threshold vehicular speed in a determination period lasting from the determination of collision for a predetermined time. The output suppression unit suppresses an output of a vehicle driving force when the vehicular speed absolute value is smaller than the threshold vehicular speed in the determination period.Type: ApplicationFiled: May 12, 2011Publication date: March 13, 2014Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Keiji Kaita, Takeshi Hoshiba, Takahiko Hirasawa
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Publication number: 20140002256Abstract: An ECU executes a program including: a step of bringing a “READY” mark into a flashing state when there is a request to restart a system of a vehicle during traveling and when start of an engine is necessary; a step of starting the engine when an engine rotational speed Ne is equal to or lower than a prescribed rotational speed Ne and when start of the engine is possible; a step of shifting the “READY” mark from the flashing state to a constantly lighting state when start of the engine is completed; and a step of bringing the “READY” mark into the constantly lighting state when start of the engine is unnecessary.Type: ApplicationFiled: March 24, 2011Publication date: January 2, 2014Applicant: TOYOTA JIDOSHA KABUSHKI KAISHAInventor: Takeshi Hoshiba
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Publication number: 20130325275Abstract: An ECU determines whether or not there is an abnormality (shift pattern abnormality) in a combination of shift signals provided from a shift position sensor. After occurrence of the shift pattern abnormality is determined, ECU determines whether or not a first condition that a shift pattern has changed into a normal pattern of a drive range, a second condition that a brake is ON and a vehicle is in a stop state is satisfied, and a third condition that an accelerator is OFF satisfied. When occurrence of the shift pattern abnormality is determined, ECU stops generation of driving force of the vehicle and prohibits switching to the drive range. When ECU determines that the above-mentioned first to third conditions are satisfied after occurrence of the shift pattern abnormality is determined, ECU switches the shift range to the drive range indicated by the shift pattern.Type: ApplicationFiled: February 14, 2011Publication date: December 5, 2013Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Keiji Kaita, Masaya Amano, Takeshi Hoshiba, Koji Hokoi, Takahiko Hirasawa
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Publication number: 20130317720Abstract: During the deactivation of a driving system of a vehicle, an ECU determines whether or not a P range abnormality occurs which exhibits that a shift signal transmitted from a shift position sensor includes a P signal and an MJ signal corresponding to the P range as well as a different-type signal other than the P signal and the MJ signal. When the P range abnormality occurs, the ECU determines whether or not the vehicle-stopped state can be assured based on whether or not a brake-ON state (a hydraulic braking force or a parking braking force are beyond the range capable of maintaining vehicle-stopped state) is present. In a case where a P range abnormality occurs, when ECU determines that the vehicle-stopped state can be assured, the ECU allows the activation of the driving system.Type: ApplicationFiled: February 14, 2011Publication date: November 28, 2013Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Keiji Kaita, Masaya Amano, Takeshi Hoshiba, Koji Hokoi, Takahiko Hirasawa, Masashi Yoshimi
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Publication number: 20130317715Abstract: An ECU determines whether or not there is an abnormality (shift pattern abnormality) in a combination of shift signals provided from a shift position sensor. After occurrence of the shift pattern abnormality is determined, the ECU determines whether or not a first condition that a shift pattern changes into a normal pattern of a drive range is satisfied, and whether or not a second condition that a vehicle is running (a driver has an intention to cause the vehicle to run) is satisfied. When occurrence of the shift pattern abnormality is determined, the ECU stops generation of driving force of the vehicle and prohibits switching to the drive range. When the above-mentioned first condition and second condition are satisfied after occurrence of the shift pattern abnormality is determined, the ECU switches the shift range to the drive range indicated by the shift pattern and recovers the driving force.Type: ApplicationFiled: February 4, 2011Publication date: November 28, 2013Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Keiji Kaita, Nobuyuki Tanaka, Masaya Amano, Koji Hokoi, Masashi Yoshimi, Takeshi Hoshiba, Takahiko Hirasawa