Patents by Inventor Yasuhiro Kuze
Yasuhiro Kuze 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: 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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Patent number: 11422189Abstract: A switch includes an operating member and three contacts (first, second and third contacts). The operating member displaces between a first and a second positions. A state of the three contacts is switched between a first and a second states by displacement of the operating member. Each contact connects or disconnects a signal line in the first state, and puts, in the second state, the signal line into a state reverse to the first stat. In course of the displacement of the operating member from the first position to the second position, the first contact switches from the first state to the second state, the second contact switches from the first state to the second state after switching of the first contact, and the third contact switches from the second state to the first state at a timing between switching of the first contact and switching of the second contact.Type: GrantFiled: October 20, 2020Date of Patent: August 23, 2022Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Yasuhiro Kuze
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Publication number: 20210181255Abstract: A switch includes an operating member and three contacts (first, second and third contacts). The operating member displaces between a first and a second positions. A state of the three contacts is switched between a first and a second states by displacement of the operating member. Each contact connects or disconnects a signal line in the first state, and puts, in the second state, the signal line into a state reverse to the first stat. In course of the displacement of the operating member from the first position to the second position, the first contact switches from the first state to the second state, the second contact switches from the first state to the second state after switching of the first contact, and the third contact switches from the second state to the first state at a timing between switching of the first contact and switching of the second contact.Type: ApplicationFiled: October 20, 2020Publication date: June 17, 2021Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Yasuhiro KUZE
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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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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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Patent number: 10006384Abstract: A time point t0 represents a time point when a turbocharged engine is brought into a decelerating state, and an opening degree of a throttle valve is decreased. A time point t1 represents a time point when an opening command to an ABV is issued. When the ABV has an abnormality, and when a WGV is stuck open, a turbocharging pressure before the time point t0 shows a tendency to fall below a target turbocharging pressure, and a turbocharging pressure after the time point t1 reduces slowly to approach a predetermined pressure. When the WGV is stuck closed, a turbocharging pressure before the time point t0 shows a tendency to exceed the target turbocharging pressure, and the turbocharging pressure after the time point t1 reduces with vigor to approach the predetermined pressure.Type: GrantFiled: April 22, 2015Date of Patent: June 26, 2018Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yosuke Matsumoto, Yasuhiro Kuze, Noriyasu Adachi, Yusuke Saito, Satoru Tanaka
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Patent number: 9897022Abstract: An engine includes a turbocharger, an air bypass valve, a wastegate valve, and an EGR apparatus. The engine also includes an ISC passage that connects an upstream side and a downstream side of a throttle valve in an intake passage, and an ISC valve that adjusts an amount of air flowing through the ISC passage. A control apparatus for the engine performs valve opening control to set an opening of an ISC valve at a larger opening than a reference opening when a required torque required by the engine is smaller than an estimated torque that can be generated by the engine, and closes the air bypass valve and the wastegate valve for a fixed period following completion of the valve opening control when an EGR valve of a low pressure EGR apparatus is opened during execution of the valve opening control.Type: GrantFiled: January 8, 2014Date of Patent: February 20, 2018Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Yasuhiro Kuze
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Patent number: 9765714Abstract: An internal combustion engine of the present invention is an internal combustion engine equipped with port injectors. Further, the internal combustion engine has an ISC passage that connects an upstream side and a downstream side of a throttle valve in an intake passage, and an ISC valve that regulates an amount of air flowing in the ISC passage. A control device of the present invention performs valve opening control that makes an opening degree of the ISC valve an opening degree larger than a reference opening degree when request torque required by the internal combustion engine is smaller than estimated torque that can be generated in the internal combustion engine, and sets a timing for fuel injection from the port injector at an opening timing of an intake valve of a cylinder in which the port injector is installed during the valve opening control.Type: GrantFiled: January 8, 2014Date of Patent: September 19, 2017Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Yasuhiro Kuze
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Patent number: 9732667Abstract: The invention has an object to control an EGR amount accurately in transient time. An ECU switches EGR control to the one-valve EGR control and the both-valve EGR control based on a request EGR amount. When the EGR control is switched to the one-valve EGR control from the both-valve EGR control, an EGR valve of one bank is closed first. Next, during a time period until an opening degree restriction time period elapses after the EGR valve is closed, an opening degree of an EGR valve of the other bank is restricted to be smaller than a one-valve target opening degree. Subsequently, when the opening degree restriction time period elapses, restriction of the opening degree of the EGR valve is cancelled, and the opening degree of the EGR valve is changes to the one-valve target opening degree.Type: GrantFiled: July 20, 2015Date of Patent: August 15, 2017Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Yasuhiro Kuze
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Patent number: 9644553Abstract: An internal combustion engine of the present invention is an internal combustion engine including a supercharger and an EGR device. Further, the internal combustion engine has an ISC passage that connects an upstream side and a downstream side of a throttle valve in an intake passage, and an ISC valve that regulates an amount of air that flows in the ISC passage. A control device of the present invention performs valve opening control that makes an opening degree of the ISC valve an opening degree larger than a reference opening degree when request torque required by the internal combustion engine is smaller than estimated torque that can be generated in the internal combustion engine, and prohibits opening of an EGR valve of the EGR device during execution of the valve opening control.Type: GrantFiled: January 8, 2014Date of Patent: May 9, 2017Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Yasuhiro Kuze
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Publication number: 20160061126Abstract: An internal combustion engine of the present invention is an internal combustion engine including a supercharger and an EGR device. Further, the internal combustion engine has an ISC passage that connects an upstream side and a downstream side of a throttle valve in an intake passage, and an ISC valve that regulates an amount of air that flows in the ISC passage. A control device of the present invention performs valve opening control that makes an opening degree of the ISC valve an opening degree larger than a reference opening degree when request torque required by the internal combustion engine is smaller than estimated torque that can be generated in the internal combustion engine, and prohibits opening of an EGR valve of the EGR device during execution of the valve opening control.Type: ApplicationFiled: January 8, 2014Publication date: March 3, 2016Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Yasuhiro KUZE
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Publication number: 20160053695Abstract: An internal combustion engine of the present invention is an internal combustion engine equipped with port injectors. Further, the internal combustion engine has an ISC passage that connects an upstream side and a downstream side of a throttle valve in an intake passage, and an ISC valve that regulates an amount of air flowing in the ISC passage. A control device of the present invention performs valve opening control that makes an opening degree of the ISC valve an opening degree larger than a reference opening degree when request torque required by the internal combustion engine is smaller than estimated torque that can be generated in the internal combustion engine, and sets a timing for fuel injection from the port injector at an opening timing of an intake valve of a cylinder in which the port injector is installed during the valve opening control.Type: ApplicationFiled: January 8, 2014Publication date: February 25, 2016Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Yasuhiro KUZE
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Publication number: 20160047350Abstract: An internal combustion engine of the present invention is an internal combustion engine equipped with a supercharger that can switch between a lean combustion operation that combusts a mixture gas with an air-fuel ratio leaner than a theoretical air-fuel ratio, and a stoichiometric combustion operation that combusts a mixture gas with an air-fuel ratio close to the theoretical air-fuel ratio. Further, the internal combustion engine has an ISC passage that connects an upstream side and a downstream side of a throttle valve in an intake passage, and an ISC valve that regulates an amount of air flowing in the ISC passage.Type: ApplicationFiled: January 8, 2014Publication date: February 18, 2016Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Yasuhiro KUZE
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Publication number: 20160047339Abstract: An engine includes a turbocharger, an air bypass valve, a wastegate valve, and an EGR apparatus. The engine also includes an ISC passage that connects an upstream side and a downstream side of a throttle valve in an intake passage, and an ISC valve that adjusts an amount of air flowing through the ISC passage. A control apparatus for the engine performs valve opening control to set an opening of an ISC valve at a larger opening than a reference opening when a required torque required by the engine is smaller than an estimated torque that can be generated by the engine, and closes the air bypass valve and the wastegate valve for a fixed period following completion of the valve opening control when an EGR valve of a low pressure EGR apparatus is opened during execution of the valve opening control.Type: ApplicationFiled: January 8, 2014Publication date: February 18, 2016Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Yasuhiro KUZE
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Publication number: 20160025046Abstract: The invention has an object to control an EGR amount accurately in transient time. An ECU switches EGR control to the one-valve EGR control and the both-valve EGR control based on a request EGR amount. When the EGR control is switched to the one-valve EGR control from the both-valve EGR control, an EGR valve of one bank is closed first. Next, during a time period until an opening degree restriction time period elapses after the EGR valve is closed, an opening degree of an EGR valve of the other bank is restricted to be smaller than a one-valve target opening degree. Subsequently, when the opening degree restriction time period elapses, restriction of the opening degree of the EGR valve is cancelled, and the opening degree of the EGR valve is changes to the one-valve target opening degree.Type: ApplicationFiled: July 20, 2015Publication date: January 28, 2016Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Yasuhiro KUZE
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Patent number: 9228483Abstract: A first fluid system includes a thermostat portion T, a valve portion V, and an ECU 30A. The thermostat portion T includes a first thermostat 18 in a first divergent pathway PB1 and a second thermostat 19 in a second divergent pathway PB2. The valve portion V includes a valve mechanism in at least a second portion SG2 of portions SG1, SG2, SG3. In the ECU 30A, achieved is a control unit that controls the valve portion V to switch a flow control state of at least one of the valve mechanism of the valve portion V when one of an open failure and a close failure occurs in one of the thermostats 18, 19.Type: GrantFiled: May 20, 2011Date of Patent: January 5, 2016Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Yasuhiro Kuze
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Publication number: 20150308358Abstract: A time point t0 represents a time point when a turbocharged engine is brought into a decelerating state, and an opening degree of a throttle valve is decreased. A time point t1 represents a time point when an opening command to an ABV is issued. When the ABV has an abnormality, and when a WGV is stuck open, a turbocharging pressure before the time point t0 shows a tendency to fall below a target turbocharging pressure, and a turbocharging pressure after the time point t1 reduces slowly to approach a predetermined pressure. When the WGV is stuck closed, a turbocharging pressure before the time point t0 shows a tendency to exceed the target turbocharging pressure, and the turbocharging pressure after the time point t1 reduces with vigor to approach the predetermined pressure.Type: ApplicationFiled: April 22, 2015Publication date: October 29, 2015Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yosuke MATSUMOTO, Yasuhiro KUZE, Noriyasu ADACHI, Yusuke SAITO, Satoru TANAKA