Patents by Inventor Yuki Iizawa
Yuki Iizawa 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: 11965468Abstract: A vehicle control system, a vehicle control method, and a storage medium are provided. A stopping process stops fuel supply to one or more stopping cylinders and supplies fuel to one or more remaining cylinders during a load operation of an engine. During execution of the stopping process, a compensating process compensates for a decrease in output of the one or more stopping cylinders due to the execution of the stopping process by increasing output generated by combustion in the one or more remaining cylinders. The system control circuit causes, when the engine rotation speed of the engine is the same, the output after being increased by the compensating process to decrease as a shaft torque of the crankshaft of the engine increases.Type: GrantFiled: August 7, 2023Date of Patent: April 23, 2024Assignee: Toyota Jidosha Kabushiki KaishaInventors: Shinnosuke Honda, Yoshinori Fujitake, Suguru Kumazawa, Motohiko Taniyama, Keita Sato, Yuki Iizawa, Yoshiyuki Shogenji, Yasutaka Tsuchida
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Publication number: 20240052794Abstract: A vehicle control system, a vehicle control method, and a storage medium are provided. A stopping process stops fuel supply to one or more stopping cylinders and supplies fuel to one or more remaining cylinders during a load operation of an engine. During execution of the stopping process, a compensating process compensates for a decrease in output of the one or more stopping cylinders due to the execution of the stopping process by increasing output generated by combustion in the one or more remaining cylinders. The system control circuit causes, when the engine rotation speed of the engine is the same, the output after being increased by the compensating process to decrease as a shaft torque of the crankshaft of the engine increases.Type: ApplicationFiled: August 7, 2023Publication date: February 15, 2024Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Shinnosuke HONDA, Yoshinori FUJITAKE, Suguru KUMAZAWA, Motohiko TANIYAMA, Keita SATO, Yuki IIZAWA, Yoshiyuki SHOGENJI, Yasutaka TSUCHIDA
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Patent number: 11413485Abstract: A sprinkler head includes a main body, a valve element, a heat-sensitive disassembling unit, a deflector, at least one strut, and a guide ring. The body includes a nozzle from which fire-extinguishing liquid is discharged. The disassembling unit keeps the nozzle closed with the valve element and opens the nozzle through a breakdown action during activation. The deflector has a receiving surface (valve-element supporting portion) and vanes extending from the receiving surface toward the body. The deflector scatters, outward in axis crossing directions of the nozzle, the fire-extinguishing liquid discharged from the nozzle and received by the receiving surface. The least one strut holds the deflector scattering the fire-extinguishing liquid. The guide ring is movable along the at least one strut and between a tip (main-body-side end portion) of the at least one strut and tips of the vanes.Type: GrantFiled: July 8, 2020Date of Patent: August 16, 2022Assignee: SENJU SPRINKLER CO., LTD.Inventors: Masakatsu Kikuchi, Yutaka Tateishi, Masashi Murakami, Yuki Iizawa
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Patent number: 11377085Abstract: A controller for a hybrid vehicle controls a first motor generator and a second motor generator such that electric power input to a battery does not exceed an input upper limit value and electric power output from the battery does not exceed an output upper limit value. The controller executes motoring to rotate an output shaft using the first motor generator with combustion operation of an engine stopped, thereby causing a braking force generated by friction of the engine to act on a driven wheel. The controller executes a valve-opening limitation process that limits an increase in a throttle open degree in correspondence with the input upper limit value upon issuance of an increase request for the throttle open degree that is not based on an operation of requesting a change in the braking force performed by a driver during the execution of the motoring.Type: GrantFiled: March 10, 2021Date of Patent: July 5, 2022Assignee: Toyota Jidosha Kabushiki KaishaInventors: Yuki Iizawa, Yasutaka Tsuchida
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Patent number: 11311759Abstract: A sprinkler head includes a main body, a valve element, a heat-sensitive disassembling unit, a cylindrical frame, a set pin between the valve element and the disassembling unit, and a spring member engaged with the pin. The body includes a nozzle from which fire-extinguishing liquid is discharged. The disassembling unit includes a plunger having an interior circumferential surface. The disassembling unit keeps the nozzle closed with the valve element and opens the nozzle through a breakdown action during activation. The frame includes an upper part connected to the body and a lower part engaged with the disassembling unit. The pin includes a leg inserted in the plunger and including an inclined surface and a straight portion closer to the valve element. The straight portion is in contact with and slidable over the circumferential surface. The breakdown action causes the pin to move, with the inclined surface contacting the circumferential surface.Type: GrantFiled: July 8, 2020Date of Patent: April 26, 2022Assignee: SENJU SPRINKLER CO., LTD.Inventors: Masakatsu Kikuchi, Yutaka Tateishi, Yuki Iizawa, Masashi Murakami
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Publication number: 20210300323Abstract: A controller for a hybrid vehicle controls a first motor generator and a second motor generator such that electric power input to a battery does not exceed an input upper limit value and electric power output from the battery does not exceed an output upper limit value. The controller executes motoring to rotate an output shaft using the first motor generator with combustion operation of an engine stopped, thereby causing a braking force generated by friction of the engine to act on a driven wheel. The controller executes a valve-opening limitation process that limits an increase in a throttle open degree in correspondence with the input upper limit value upon issuance of an increase request for the throttle open degree that is not based on an operation of requesting a change in the braking force performed by a driver during the execution of the motoring.Type: ApplicationFiled: March 10, 2021Publication date: September 30, 2021Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yuki IIZAWA, Yasutaka TSUCHIDA
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Publication number: 20210197002Abstract: A sprinkler head includes a main body, a valve element, a heat-sensitive disassembling unit, a cylindrical frame, a set pin between the valve element and the disassembling unit, and a spring member engaged with the pin. The body includes a nozzle from which fire-extinguishing liquid is discharged. The disassembling unit includes a plunger having an interior circumferential surface. The disassembling unit keeps the nozzle closed with the valve element and opens the nozzle through a breakdown action during activation. The frame includes an upper part connected to the body and a lower part engaged with the disassembling unit. The pin includes a leg inserted in the plunger and including an inclined surface and a straight portion closer to the valve element. The straight portion is in contact with and slidable over the circumferential surface. The breakdown action causes the pin to move, with the inclined surface contacting the circumferential surface.Type: ApplicationFiled: July 8, 2020Publication date: July 1, 2021Applicant: SENJU SPRINKLER CO., LTD.Inventors: Masakatsu Kikuchi, Yutaka Tateishi, Yuki Iizawa, Masashi Murakami
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Publication number: 20210016120Abstract: A sprinkler head includes a main body, a valve element, a heat-sensitive disassembling unit, a deflector, at least one strut, and a guide ring. The body includes a nozzle from which fire-extinguishing liquid is discharged. The disassembling unit keeps the nozzle closed with the valve element and opens the nozzle through a breakdown action during activation. The deflector has a receiving surface (valve-element supporting portion) and vanes extending from the receiving surface toward the body. The deflector scatters, outward in axis crossing directions of the nozzle, the fire-extinguishing liquid discharged from the nozzle and received by the receiving surface. The least one strut holds the deflector scattering the fire-extinguishing liquid. The guide ring is movable along the at least one strut and between a tip (main-body-side end portion) of the at least one strut and tips of the vanes.Type: ApplicationFiled: July 8, 2020Publication date: January 21, 2021Applicant: SENJU SPRINKLER CO., LTD.Inventors: Masakatsu Kikuchi, Yutaka Tateishi, Masashi Murakami, Yuki Iizawa