Patents by Inventor Yuki Hotani
Yuki Hotani 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: 11618427Abstract: A vehicle control device that controls a vehicle electric brake system includes: a shutdown determination part that determines whether the vehicle control device itself has been previously shut down normally or abnormally; a cranking determination part that determines whether an instruction to perform a cranking at a start-up of the vehicle is based on a manual operation of a driver of the vehicle or automatically; a diagnosis part that performs a plurality of initial diagnoses of the vehicle control device at the start-up of the vehicle; and a diagnosis skip control part configured to provide control such that the diagnosis part skips at least one of the initial diagnoses when the shutdown determination part determines that the vehicle control device has been previously shut down abnormally, and at the same time, when the cranking determination part determines that the cranking has been conducted based on the driver's manual operation.Type: GrantFiled: August 31, 2017Date of Patent: April 4, 2023Assignee: HONDA MOTOR CO., LTD.Inventors: Eisuke Horii, Katsuhito Kanbe, Hiroyuki Hase, Hideharu Murano, Shinji Suto, Keishiro Kikuchi, Katsuya Matsuzaki, Toru Watanabe, Hisanori Yanagida, Yuki Hotani
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Publication number: 20210139011Abstract: A vehicle control device that controls a vehicle electric brake system includes: a shutdown determination part that determines whether the vehicle control device itself has been previously shut down normally or abnormally; a cranking determination part that determines whether an instruction to perform a cranking at a start-up of the vehicle is based on a manual operation of a driver of the vehicle or automatically; a diagnosis part that performs a plurality of initial diagnoses of the vehicle control device at the start-up of the vehicle; and a diagnosis skip control part configured to provide control such that the diagnosis part skips at least one of the initial diagnoses when the shutdown determination part determines that the vehicle control device has been previously shut down abnormally, and at the same time, when the cranking determination part determines that the cranking has been conducted based on the driver's manual operation.Type: ApplicationFiled: August 31, 2017Publication date: May 13, 2021Inventors: Eisuke HORII, Katsuhito KANBE, Hiroyuki HASE, Hideharu MURANO, Shinji SUTO, Keishiro KIKUCHI, Katsuya MATSUZAKI, Toru WATANABE, Hisanori YANAGIDA, Yuki HOTANI
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Patent number: 10753333Abstract: A vehicle control system includes a boost device, a braking unit, a cell motor, and a start operating unit. The boost device boosts a braking force applied by a foot brake to a vehicle with an output voltage from a battery. The braking unit, which is different than the foot brake, brakes the vehicle appropriately and keeps the braking force even in a case that the output voltage is not supplied from the battery, or which braking unit does not require the output voltage from the battery. The cell motor is driven by an output voltage from the battery and starts the engine. The start operation unit starts the cell motor, wherein the vehicle control system has a function not to start the cell motor when the start operation unit is operated, unless the braking unit is in operation.Type: GrantFiled: December 12, 2017Date of Patent: August 25, 2020Assignee: HONDA MOTOR CO., LTD.Inventors: Katsuhito Kanbe, Eisuke Horii, Katsuya Matsuzaki, Yuki Hotani, Keishiro Kikuchi, Hisanori Yanagida, Toshihiko Fukuda, Hideharu Murano, Shinji Suto, Ikuo Nonaga, Hiroyuki Hase
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Publication number: 20200095968Abstract: A vehicle control system includes a boost device, a braking unit, a cell motor, and a start operating unit. The boost device boosts a braking force applied by a foot brake to a vehicle with an output voltage from a battery. The braking unit, which is different than the foot brake, brakes the vehicle appropriately and keeps the braking force even in a case that the output voltage is not supplied from the battery, or which braking unit does not require the output voltage from the battery. The cell motor is driven by an output voltage from the battery and starts the engine. The start operation unit starts the cell motor, wherein the vehicle control system has a function not to start the cell motor when the start operation unit is operated, unless the braking unit is in operation.Type: ApplicationFiled: December 12, 2017Publication date: March 26, 2020Inventors: Katsuhito KANBE, Eisuke HORII, Katsuya MATSUZAKI, Yuki HOTANI, Keishiro KIKUCHI, Hisanori YANAGIDA, Toshihiko FUKUDA, Hideharu MURANO, Shinji SUTO, Ikuo NONAGA, Hiroyuki HASE
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Patent number: 9358964Abstract: A brake device for a vehicle is provided in which when a slave cylinder generates a brake fluid pressure that is commensurate with the actual amount of operation of a brake pedal by a driver in a state in which a master cut valve is closed and a fluid path connecting a master cylinder to the slave cylinder is cut off, a wheel cylinder is actuated by the brake fluid pressure. Since deterioration determination means determines a leak in the downstream of the slave cylinder based on the actual amount of actuation of the slave cylinder detected by a slave cylinder stroke sensor and the actual brake fluid pressure generated by the slave cylinder and detected by a fluid pressure sensor, it is possible to rapidly determine a leak in the downstream of the slave cylinder.Type: GrantFiled: January 31, 2012Date of Patent: June 7, 2016Assignee: Honda Motor Co., Ltd.Inventors: Yuki Ito, Yuki Hotani
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Patent number: 9067577Abstract: A vehicle braking system includes a master cylinder for producing an upstream hydraulic pressure corresponding to an operation given to a brake operation part, a shut-off valve provided between the master cylinder and a wheel cylinder, a hydraulic-pressure source for producing a downstream hydraulic pressure between the shut-off valve and the wheel cylinder in a close instruction receiving condition of the shut-off valve, and a controller for setting a target value of the downstream hydraulic pressure based on an operation amount and controlling the downstream hydraulic pressure based on the target value. According to the vehicle braking system, a driver is prevented from feeling discomfort through a brake operation without an increase in a power consumption of a shut-off valve provided between the master cylinder and the wheel cylinder.Type: GrantFiled: August 4, 2011Date of Patent: June 30, 2015Assignee: HONDA MOTOR CO., LTD.Inventors: Yuki Ito, Yuki Hotani, Shinichi Sato
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Patent number: 9050956Abstract: A brake device for a vehicle is provided in which when there is an abnormality in which a slave cylinder becomes incapable of being actuated, a wheel cylinder is actuated using a brake fluid pressure generated by a master cylinder, which is actuated by a brake pedal. Since an idling detector detects idling of a motor when the rotational speed of the motor is greater than a reference value that is set according to the stroke of the slave cylinder, it is possible to reliably and rapidly detect idling of the motor. When the idling of the motor is detected, since a control device opens a master cut valve and the wheel cylinder is actuated by the brake fluid pressure generated by the master cylinder, the slave cylinder, which has become incapable of being actuated, can be backed up rapidly by the master cylinder.Type: GrantFiled: January 24, 2012Date of Patent: June 9, 2015Assignee: Honda Motor Co., Ltd.Inventors: Yuki Hotani, Naoto Ohkubo, Yuki Ito
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Patent number: 9016058Abstract: The object of the present invention is to provide a vehicle braking force generator capable of detecting a lock failure quickly. A vehicle braking force generator includes a motor cylinder device that generates a brake hydraulic pressure according to an operation amount of a brake pedal, a motor current obtaining unit that obtains a torque current according to an electric motor, a brake hydraulic pressure obtaining unit that obtains a brake hydraulic pressure generated in a cylinder unit, a movement amount obtaining unit that obtains a movement amount of pistons to a compression direction of a brake fluid relative to the cylinder unit, and a determination unit that determines an operation state of the motor cylinder device.Type: GrantFiled: July 17, 2013Date of Patent: April 28, 2015Assignee: Honda Motor Co., Ltd.Inventors: Yuki Hotani, Yuki Ito, Daisuke Sakamoto
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Publication number: 20140020378Abstract: The object of the present invention is to provide a vehicle braking force generator capable of detecting a lock failure quickly. A vehicle braking force generator includes a motor cylinder device that generates a brake hydraulic pressure according to an operation amount of a brake pedal, a motor current obtaining unit that obtains a torque current according to an electric motor, a brake hydraulic pressure obtaining unit that obtains a brake hydraulic pressure generated in a cylinder unit, a movement amount obtaining unit that obtains a movement amount of pistons to a compression direction of a brake fluid relative to the cylinder unit, and a determination unit that determines an operation state of the motor cylinder device.Type: ApplicationFiled: July 17, 2013Publication date: January 23, 2014Inventors: Yuki HOTANI, Yuki ITO, Daisuke SAKAMOTO
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Publication number: 20140008966Abstract: A brake device for a vehicle is provided in which when there is an abnormality in which a slave cylinder becomes incapable of being actuated, a wheel cylinder is actuated by means of a brake fluid pressure generated by a master cylinder, which is actuated by a brake pedal. Since idling detection means detects idling of a motor when the rotational speed of the motor is greater than a reference value that is set according to the stroke of the slave cylinder, it is possible to reliably and rapidly detect idling of the motor. When the idling of the motor is detected, since control means opens a master cut valve and the wheel cylinder is actuated by means of the brake fluid pressure generated by the master cylinder, the slave cylinder, which has become incapable of being actuated, can be backed up rapidly by the master cylinder.Type: ApplicationFiled: January 24, 2012Publication date: January 9, 2014Applicant: HONDA MOTOR CO., LTD.Inventors: Yuki Hotani, Naoto Ohkubo, Yuki Ito
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Publication number: 20140008965Abstract: A brake device for a vehicle is provided in which when a slave cylinder generates a brake fluid pressure that is commensurate with the actual amount of operation of a brake pedal by a driver in a state in which a master cut valve is closed and a fluid path connecting a master cylinder to the slave cylinder is cut off, a wheel cylinder is actuated by the brake fluid pressure. Since deterioration determination means determines a leak in the downstream of the slave cylinder based on the actual amount of actuation of the slave cylinder detected by a slave cylinder stroke sensor and the actual brake fluid pressure generated by the slave cylinder and detected by a fluid pressure sensor, it is possible to rapidly determine a leak in the downstream of the slave cylinder.Type: ApplicationFiled: January 31, 2012Publication date: January 9, 2014Applicant: HONDA MOTOR CO., LTD.Inventors: Yuki Ito, Yuki Hotani
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Publication number: 20130134768Abstract: A vehicle braking system includes a master cylinder for producing an upstream hydraulic pressure corresponding to an operation given to a brake operation part, a shut-off valve provided between the master cylinder and a wheel cylinder, a hydraulic-pressure source for producing a downstream hydraulic pressure between the shut-off valve and the wheel cylinder in a close instruction receiving condition of the shut-off valve, and a controller for setting a target value of the downstream hydraulic pressure based on an operation amount and controlling the downstream hydraulic pressure based on the target value. According to the vehicle braking system, a driver is prevented from feeling discomfort through a brake operation without an increase in a power consumption of a shut-off valve provided between the master cylinder and the wheel cylinder.Type: ApplicationFiled: August 4, 2011Publication date: May 30, 2013Applicant: HONDA MOTOR CO., LTD.Inventors: Yuki Ito, Yuki Hotani, Shinichi Sato