Patents by Inventor Yuuichi Hosaka
Yuuichi Hosaka 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: 9920732Abstract: An engine starting device is provided with a battery, a starter motor, an inrush current limit circuit and a control unit. The inrush current limit circuit has a resistor and a bypass relay connected in parallel. The inrush current limit circuit is interposed between the battery and the starter motor. The bypass relay has a normally open contact that is configured to be closed at a time of engine startup. The control unit is programmed to include a fault identification unit that identifies a location of fault occurrence in the inrush current limit circuit based on a minimum voltage of the battery existing while the starter motor is determined to be in operation and an amount of decrease in voltage of the battery existing while the normally open contact is determined to be actuated in a closing direction.Type: GrantFiled: February 5, 2013Date of Patent: March 20, 2018Assignee: Nissan Motor Co., Ltd.Inventors: Hiromoto Shimizu, Takayuki Iwasaki, Ryo Sano, Motoyuki Hattori, Yuuichi Hosaka
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Patent number: 9714049Abstract: When an engine is to be restarted, a power-steering mechanism is reactivated once a battery voltage has reached at least a predetermined voltage at which the power-steering mechanism normally operates after the resistance of a power supply circuit is switched by the circuit switching device, after startup of the engine has been initiated.Type: GrantFiled: October 16, 2013Date of Patent: July 25, 2017Assignee: Nissan Motor Co., Ltd.Inventors: Yuuichi Hosaka, Yuuichi Fukuyama, Shota Miyoshi, Michiharu Gunji, Hiromoto Shimizu
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Patent number: 9664169Abstract: An engine start control system includes a manual transmission, an upper switch, a lower switch, and an engine start control unit. The upper switch detects a pedal depression start operation by detecting a resting foot state from a foot released state. The lower switch detects a pedal depression terminating operation when the clutch pedal is depressed to an end position. The engine start control unit is configured to start the engine from a stopped state when signals of the upper switch indicates the pedal depression start operation and of the lower switch indicates the pedal depression terminating operation, and the engine start control unit being configured to prohibit starting of the engine, when the signal of the upper switch indicates switching from the foot released state to the pedal depression start operation, in response to detection of the signal of the lower switch indicating the pedal depression terminating operation.Type: GrantFiled: December 6, 2013Date of Patent: May 30, 2017Assignee: Nissan Motor Co., Ltd.Inventors: Yuuichi Hosaka, Hiromoto Shimizu, Munemitsu Watanabe
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Patent number: 9574506Abstract: A current is supplied to a driving relay that drives a bypass relay when restarting an engine after idle reduction, and the current supply to the driving relay is interrupted when the engine is started for the first time based on operation of a driver.Type: GrantFiled: February 5, 2013Date of Patent: February 21, 2017Assignee: NISSAN MOTOR CO., LTD.Inventors: Motoyuki Hattori, Yuuichi Hosaka, Masaya Furushou, Toshihiko Ootsuka, Hiromoto Shimizu, Ryo Sano
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Patent number: 9488148Abstract: An engine starting device is basically provided with a resistor, a bypass circuit and a switch. The resistor is configured to be disposed in series between a starter motor and a battery. The bypass circuit is disposed in parallel with respect to the resistor. The switch is configured to selectively open and close the bypass circuit, the switch opening the bypass circuit in response to commencement of engine startup, and closing the bypass circuit in response to the battery voltage approaches a maximum value during engine startup.Type: GrantFiled: March 11, 2013Date of Patent: November 8, 2016Assignee: Nissan Motor Co., Ltd.Inventors: Yuuichi Hosaka, Motoyuki Hattori, Masaya Furushou, Toshihiko Ootsuka, Hiromoto Shimizu, Ryo Sano
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Publication number: 20160230736Abstract: An engine start control system includes a manual transmission, an upper switch, a lower switch, and an engine start control unit. The upper switch detects a pedal depression start operation by detecting a resting foot state from a foot released state. The lower switch detects a pedal depression terminating operation when the clutch pedal is depressed to an end position. The engine start control unit is configured to start the engine from a stopped state when signals of the upper switch indicates the pedal depression start operation and of the lower switch indicates the pedal depression terminating operation, and the engine start control unit being configured to prohibit starting of the engine, when the signal of the upper switch indicates switching from the foot released state to the pedal depression start operation, in response to detection of the signal of the lower switch indicating the pedal depression terminating operation.Type: ApplicationFiled: December 6, 2013Publication date: August 11, 2016Inventors: Yuuichi HOSAKA, Hiromoto SHIMIZU, Munemitsu WATANABE
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Publication number: 20150260142Abstract: When an engine is to be restarted, a power-steering mechanism is reactivated once a battery voltage has reached at least a predetermined voltage at which the power-steering mechanism normally operates after the resistance of a power supply circuit is switched by the circuit switching device, after startup of the engine has been initiated.Type: ApplicationFiled: October 16, 2013Publication date: September 17, 2015Applicant: Nissan Motor Co. Ltd.Inventors: Yuuichi Hosaka, Yuuichi Fukuyama, Shota Miyoshi, Michiharu Gunji, Hiromoto Shimizu
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Publication number: 20150027405Abstract: A current is supplied to a driving relay that drives a bypass relay when restarting an engine after idle reduction, and the current supply to the driving relay is interrupted when the engine is started for the first time based on operation of a driver.Type: ApplicationFiled: February 5, 2013Publication date: January 29, 2015Applicant: NISSAN MOTOR CO., LTD.Inventors: Motoyuki Hattori, Yuuichi Hosaka, Masaya Furushou, Toshihiko Ootsuka, Hiromot Shimizu, Ryo Sano
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Publication number: 20150007695Abstract: An engine starting device is basically provided with a resistor, a bypass circuit and a switch. The resistor is configured to be disposed in series between a starter motor and a battery. The bypass circuit is disposed in parallel with respect to the resistor. The switch is configured to selectively open and close the bypass circuit, the switch opening the bypass circuit in response to commencement of engine startup, and closing the bypass circuit in response to the battery voltage approaches a maximum value during engine startup.Type: ApplicationFiled: March 11, 2013Publication date: January 8, 2015Applicant: Nissan Motor Co., Ltd.Inventors: Yuuichi Hosaka, Motoyuki Hattori, Masaya Furushou, Toshihiko Ootsuka, Hiromoto Shimizu, Ryo Sano
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Publication number: 20140372013Abstract: An engine starting device is provided with a battery, a starter motor, an inrush current limit circuit and a control unit. The inrush current limit circuit has a resistor and a bypass relay connected in parallel. The inrush current limit circuit is interposed between the battery and the starter motor. The bypass relay has a normally open contact that is configured to be closed at a time of engine startup. The control unit is programmed to include a fault identification unit that identifies a location of fault occurrence in the inrush current limit circuit based on a minimum voltage of the battery existing while the starter motor is determined to be in operation and an amount of decrease in voltage of the battery existing while the normally open contact is determined to be actuated in a closing direction.Type: ApplicationFiled: February 5, 2013Publication date: December 18, 2014Applicant: Nissan Motor Company, Ltd.Inventors: Hiromoto Shimizu, Takayuki Iwasaki, Ryo Sano, Motoyuki Hattori, Yuuichi Hosaka
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Patent number: 8763365Abstract: An exhaust emission control device includes a first detection unit for detecting a NOx adsorption amount and an oxygen storage amount of a three-way catalyst and a NOx purification catalyst during rich spike, a second detection unit for detecting the oxygen storage amount of the three-way catalyst and the NOx purification catalyst until the output of a second air-fuel sensor becomes lean after the rich spike, and a deterioration determination unit for determining deterioration of the NOx purification catalyst based on a detected value of the first detection unit and that of the second detection unit.Type: GrantFiled: July 22, 2010Date of Patent: July 1, 2014Assignee: Nissan Motor Co., Ltd.Inventors: Yasutaka Ishibashi, Yuuichi Hosaka, Takeshi Ishino, Issho Uehara
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Publication number: 20120124972Abstract: An exhaust emission control device includes a NOx purification catalyst, a three-way catalyst provided upstream of the NOx purification catalyst, a first air-fuel ratio sensor provided upstream of the three-way catalyst, a second air-fuel ratio provided downstream of the NOx purification catalyst, a rich spike unit for changing an exhaust gas air-fuel ratio from lean to rich for a predetermined period to reduce and purify NOx adsorbed by the NOx purification catalyst, a first detection unit for detecting a NOx adsorption amount and an oxygen storage amount of the three-way catalyst and the NOx purification catalyst during rich spike, a second detection unit for detecting the oxygen storage amount of the three-way catalyst and the NOx purification catalyst until the output of the second air-fuel sensor becomes lean after the rich spike, and a deterioration determination unit for determining deterioration of the NOx purification catalyst based on a detected value of the first detection unit and that of the secoType: ApplicationFiled: July 22, 2010Publication date: May 24, 2012Inventors: Yasutaka Ishibashi, Yuuichi Hosaka, Takeshi Ishino, Issho Uehara
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Patent number: 8127536Abstract: An exhaust gas cleaning apparatus is provided with an exhaust gas particulate filter, an oxidation catalytic converter and a regeneration control component. The exhaust gas particulate filter is arranged in an exhaust passage of an internal combustion engine for capturing particulate matter in exhaust gas from the internal combustion engine. The oxidation catalytic converter is arranged upstream of the exhaust gas particulate filter in the exhaust passage. The regeneration control component is configured to control an exhaust gas recirculation rate and a temperature of recirculated exhaust gas being recirculated to an air induction system of the internal combustion engine for controlling a temperature of the exhaust gas particulate filter and a concentration of nitrogen dioxide in the exhaust gas particulate filter such that nitrogen dioxide generated by the oxidation catalytic converter is used to burn the particulate matter captured in the exhaust gas particulate filter.Type: GrantFiled: March 27, 2008Date of Patent: March 6, 2012Assignee: Nissan Motor Co., Ltd.Inventor: Yuuichi Hosaka
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Publication number: 20080276604Abstract: An exhaust gas cleaning apparatus is provided with an exhaust gas particulate filter, an oxidation catalytic converter and a regeneration control component. The exhaust gas particulate filter is arranged in an exhaust passage of an internal combustion engine for capturing particulate matter in exhaust gas from the internal combustion engine. The oxidation catalytic converter is arranged upstream of the exhaust gas particulate filter in the exhaust passage. The regeneration control component is configured to control an exhaust gas recirculation rate and a temperature of recirculated exhaust gas being recirculated to an air induction system of the internal combustion engine for controlling a temperature of the exhaust gas particulate filter and a concentration of nitrogen dioxide in the exhaust gas particulate filter such that nitrogen dioxide generated by the oxidation catalytic converter is used to burn the particulate matter captured in the exhaust gas particulate filter.Type: ApplicationFiled: March 27, 2008Publication date: November 13, 2008Applicant: NISSAN MOTOR CO., LTD.Inventor: Yuuichi HOSAKA