Patents by Inventor Shinobu Ochiai
Shinobu Ochiai 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: 11486323Abstract: There is provided with an engine control device that can reduce the time it takes to start the monitoring of an output of an engine. The engine control device comprises a monitor unit configured to monitor an output of an engine when engine speed is a threshold or more, and a control unit configured to control the engine based on a result of the monitor unit, wherein the monitor unit includes an output determination unit that determines whether the output of the engine is excessive, and a change unit that changes in accordance with a warm-up state of the engine, the threshold.Type: GrantFiled: February 12, 2021Date of Patent: November 1, 2022Assignee: HONDA MOTOR CO., LTD.Inventor: Shinobu Ochiai
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Publication number: 20210262409Abstract: There is provided with an engine control device that can reduce the time it takes to start the monitoring of an output of an engine. The engine control device comprises a monitor unit configured to monitor an output of an engine when engine speed is a threshold or more, and a control unit configured to control the engine based on a result of the monitor unit, wherein the monitor unit includes an output determination unit that determines whether the output of the engine is excessive, and a change unit that changes in accordance with a warm-up state of the engine, the threshold.Type: ApplicationFiled: February 12, 2021Publication date: August 26, 2021Inventor: Shinobu OCHIAI
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Patent number: 9863334Abstract: A drive control apparatus in which the target torque which is a target value of an output torque of the prime mover for driving a vehicle, is calculated, and the output torque control is performed so that the output torque of the prime mover coincides with the target torque, is provided. An estimated output torque which is an estimated value of the actual output torque of the prime mover, is calculated, and the torque difference accumulated value which approximates a time-integration value of a torque difference between the target torque and the estimated output torque, is calculated. It is determined that an abnormality has occurred in the output torque control when the torque difference accumulated value exceeds a determination threshold value which is set to a constant value.Type: GrantFiled: October 15, 2014Date of Patent: January 9, 2018Assignee: HONDA MOTOR CO., LTD.Inventors: Tatsuya Arikai, Shinobu Ochiai, Naoki Tsuji
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Publication number: 20160138494Abstract: A drive control apparatus in which the target torque which is a target value of an output torque of the prime mover for driving a vehicle, is calculated, and the output torque control is performed so that the output torque of the prime mover coincides with the target torque, is provided. An estimated output torque which is an estimated value of the actual output torque of the prime mover, is calculated, and the torque difference accumulated value which approximates a time-integration value of a torque difference between the target torque and the estimated output torque, is calculated. It is determined that an abnormality has occurred in the output torque control when the torque difference accumulated value exceeds a determination threshold value which is set to a constant value.Type: ApplicationFiled: October 15, 2014Publication date: May 19, 2016Inventors: Tatsuya ARIKAI, Shinobu OCHIAI, Naoki TSUJI
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Patent number: 9115656Abstract: A control system for an internal combustion engine having a throttle valve disposed in an intake passage of the engine. A target intake air amount of the engine is calculated, and an intake pressure of the engine is estimated. A wide-open intake air amount is calculated according to the engine rotational speed, and a theoretical intake air amount is calculated according to the wide-open intake air amount and the intake pressure. The wide-open intake air amount is an intake air amount corresponding to a state where the throttle valve is fully opened, and the theoretical intake air amount is an intake air amount corresponding to a state where no exhaust gas of the engine is recirculated to a combustion chamber of the engine. further, an exhaust gas recirculation ratio is calculated using the theoretical intake air amount and the target intake air amount, and a target output torque of the engine is calculated using the target intake air amount and the exhaust gas recirculation ratio.Type: GrantFiled: March 13, 2015Date of Patent: August 25, 2015Assignee: HONDA MOTOR CO., LTD.Inventors: Yosuke Kosaka, Daisuke Shiomi, Jiro Takagi, Masaya Agata, Kentaro Onuma, Shinobu Ochiai
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Patent number: 9109528Abstract: A control system for an internal combustion engine having a throttle valve disposed in an intake passage of the engine. A target intake air amount of the engine is calculated, and an intake pressure of the engine is estimated. A wide-open intake air amount is calculated according to the engine rotational speed, and a theoretical intake air amount is calculated according to the wide-open intake air amount and the intake pressure. The wide-open intake air amount is an intake air amount corresponding to a state where the throttle valve is fully opened, and the theoretical intake air amount is an intake air amount corresponding to a state where no exhaust gas of the engine is recirculated to a combustion chamber of the engine. further, an exhaust gas recirculation ratio is calculated using the theoretical intake air amount and the target intake air amount, and a target output torque of the engine is calculated using the target intake air amount and the exhaust gas recirculation ratio.Type: GrantFiled: March 13, 2015Date of Patent: August 18, 2015Assignee: HONDA MOTOR CO., LTD.Inventors: Yosuke Kosaka, Daisuke Shiomi, Jiro Takagi, Masaya Agata, Kentaro Onuma, Shinobu Ochiai
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Patent number: 9103291Abstract: A control system for an internal combustion engine having a throttle valve disposed in an intake passage of the engine. A target intake air amount of the engine is calculated, and an intake pressure of the engine is estimated. A wide-open intake air amount is calculated according to the engine rotational speed, and a theoretical intake air amount is calculated according to the wide-open intake air amount and the intake pressure. The wide-open intake air amount is an intake air amount corresponding to a state where the throttle valve is fully opened, and the theoretical intake air amount is an intake air amount corresponding to a state where no exhaust gas of the engine is recirculated to a combustion chamber of the engine. further, an exhaust gas recirculation ratio is calculated using the theoretical intake air amount and the target intake air amount, and a target output torque of the engine is calculated using the target intake air amount and the exhaust gas recirculation ratio.Type: GrantFiled: March 13, 2015Date of Patent: August 11, 2015Assignee: HONDA MOTOR CO., LTD.Inventors: Yosuke Kosaka, Daisuke Shiomi, Jiro Takagi, Masaya Agata, Kentaro Onuma, Shinobu Ochiai
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Publication number: 20150184608Abstract: A control system for an internal combustion engine having a throttle valve disposed in an intake passage of the engine. A target intake air amount of the engine is calculated, and an intake pressure of the engine is estimated. A wide-open intake air amount is calculated according to the engine rotational speed, and a theoretical intake air amount is calculated according to the wide-open intake air amount and the intake pressure. The wide-open intake air amount is an intake air amount corresponding to a state where the throttle valve is fully opened, and the theoretical intake air amount is an intake air amount corresponding to a state where no exhaust gas of the engine is recirculated to a combustion chamber of the engine. further, an exhaust gas recirculation ratio is calculated using the theoretical intake air amount and the target intake air amount, and a target output torque of the engine is calculated using the target intake air amount and the exhaust gas recirculation ratio.Type: ApplicationFiled: March 13, 2015Publication date: July 2, 2015Applicant: HONDA MOTOR CO., LTD.Inventors: Yosuke Kosaka, Daisuke Shiomi, Jiro Takagi, Masaya Agata, Kentaro Onuma, Shinobu Ochiai
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Publication number: 20150184601Abstract: A control system for an internal combustion engine having a throttle valve disposed in an intake passage of the engine. A target intake air amount of the engine is calculated, and an intake pressure of the engine is estimated. A wide-open intake air amount is calculated according to the engine rotational speed, and a theoretical intake air amount is calculated according to the wide-open intake air amount and the intake pressure. The wide-open intake air amount is an intake air amount corresponding to a state where the throttle valve is fully opened, and the theoretical intake air amount is an intake air amount corresponding to a state where no exhaust gas of the engine is recirculated to a combustion chamber of the engine. further, an exhaust gas recirculation ratio is calculated using the theoretical intake air amount and the target intake air amount, and a target output torque of the engine is calculated using the target intake air amount and the exhaust gas recirculation ratio.Type: ApplicationFiled: March 13, 2015Publication date: July 2, 2015Applicant: HONDA MOTOR CO., LTD.Inventors: Yosuke Kosaka, Daisuke Shiomi, Jiro Takagi, Masaya Agata, Kentaro Onuma, Shinobu Ochiai
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Publication number: 20150184602Abstract: A control system for an internal combustion engine having a throttle valve disposed in an intake passage of the engine. A target intake air amount of the engine is calculated, and an intake pressure of the engine is estimated. A wide-open intake air amount is calculated according to the engine rotational speed, and a theoretical intake air amount is calculated according to the wide-open intake air amount and the intake pressure. The wide-open intake air amount is an intake air amount corresponding to a state where the throttle valve is fully opened, and the theoretical intake air amount is an intake air amount corresponding to a state where no exhaust gas of the engine is recirculated to a combustion chamber of the engine. further, an exhaust gas recirculation ratio is calculated using the theoretical intake air amount and the target intake air amount, and a target output torque of the engine is calculated using the target intake air amount and the exhaust gas recirculation ratio.Type: ApplicationFiled: March 13, 2015Publication date: July 2, 2015Applicant: HONDA MOTOR CO., LTD.Inventors: Yosuke Kosaka, Daisuke Shiomi, Jiro Takagi, Masaya Agata, Kentaro Onuma, Shinobu Ochiai
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Patent number: 9014950Abstract: A control system for an internal combustion engine having a throttle valve disposed in an intake passage of the engine. A target intake air amount of the engine is calculated, and an intake pressure of the engine is estimated. A wide-open intake air amount is calculated according to the engine rotational speed, and a theoretical intake air amount is calculated according to the wide-open intake air amount and the intake pressure. The wide-open intake air amount is an intake air amount corresponding to a state where the throttle valve is fully opened, and the theoretical intake air amount is an intake air amount corresponding to a state where no exhaust gas of the engine is recirculated to a combustion chamber of the engine. further, an exhaust gas recirculation ratio is calculated using the theoretical intake air amount and the target intake air amount, and a target output torque of the engine is calculated using the target intake air amount and the exhaust gas recirculation ratio.Type: GrantFiled: June 29, 2011Date of Patent: April 21, 2015Assignee: Honda Motor Co., Ltd.Inventors: Yosuke Kosaka, Daisuke Shiomi, Jiro Takagi, Masaya Agata, Kentaro Onuma, Shinobu Ochiai
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Publication number: 20120053822Abstract: A control system for an internal combustion engine having a throttle valve disposed in an intake passage of the engine. A target intake air amount of the engine is calculated, and an intake pressure of the engine is estimated. A wide-open intake air amount is calculated according to the engine rotational speed, and a theoretical intake air amount is calculated according to the wide-open intake air amount and the intake pressure. The wide-open intake air amount is an intake air amount corresponding to a state where the throttle valve is fully opened, and the theoretical intake air amount is an intake air amount corresponding to a state where no exhaust gas of the engine is recirculated to a combustion chamber of the engine. further, an exhaust gas recirculation ratio is calculated using the theoretical intake air amount and the target intake air amount, and a target output torque of the engine is calculated using the target intake air amount and the exhaust gas recirculation ratio.Type: ApplicationFiled: June 29, 2011Publication date: March 1, 2012Applicant: HONDA MOTOR CO., LTD.Inventors: Yosuke Kosaka, Daisuke Shiomi, Jiro Takagi, Masaya Agata, Kentaro Onuma, Shinobu Ochiai
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Patent number: 7102330Abstract: An apparatus and method for controlling charging and discharging of an energy storage device. If the charging voltage that is applied exceeds a restriction determining voltage, the power value at that time is held as the charging power upper limit value. In addition, by multiplying a restriction coefficient by the charging power upper limit value while gradually reducing the restriction coefficient until the voltage drops below a restriction removal determining voltage. By setting its result as a control target value of the charging power, the charging power is gradually restricted. In contrast, if the applied charging voltage drops below the restriction removal determining voltage, the charging power is conversely gradually restored to its original state using a control target value obtained by multiplying the restriction coefficient by the charging power upper limit value while gradually increasing the restriction coefficient until the voltage equals or goes above the restriction determining voltage.Type: GrantFiled: May 19, 2004Date of Patent: September 5, 2006Assignee: Honda Motor Co., Ltd.Inventors: Shinobu Ochiai, Kiyoshi Asami, Tomohiro Shiraishi
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Patent number: 7071639Abstract: An electric motor control apparatus suppressing power loss caused by driving an electric motor acting as a motor with a generated output of an electric motor acting as a generator. The electric motor control apparatus comprises a PAM controlled motor selecting unit (53) for determining which of “control pattern 1” and “control pattern 2” should be executed by comparison in total power loss, where a voltage control unit on the power generation side (51) performs voltage transformation with a PWM control in a first inverter (30) and generates a drive voltage for a second electric motor (12) with a PAM control in a second inverter (31) in the control pattern 1 and a voltage control unit on the driving side (52) outputs a rectified voltage from a generated voltage of a first electric motor (6) without voltage transformation in the first inverter (30) and generates a drive voltage for the second electric motor (12) with a PWM control in the second inverter (31) in the control pattern 2.Type: GrantFiled: October 25, 2005Date of Patent: July 4, 2006Assignee: Honda Motor Co., Ltd.Inventors: Shinobu Ochiai, Keisuke Urushihara
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Publication number: 20060091835Abstract: An electric motor control apparatus suppressing power loss caused by driving an electric motor acting as a motor with a generated output of an electric motor acting as a generator. The electric motor control apparatus comprises a PAM controlled motor selecting unit (53) for determining which of “control pattern 1” and “control pattern 2” should be executed by comparison in total power loss, where a voltage control unit on the power generation side (51) performs voltage transformation with a PWM control in a first inverter (30) and generates a drive voltage for a second electric motor (12) with a PAM control in a second inverter (31) in the control pattern 1 and a voltage control unit on the driving side (52) outputs a rectified voltage from a generated voltage of a first electric motor (6) without voltage transformation in the first inverter (30) and generates a drive voltage for the second electric motor (12) with a PWM control in the second inverter (31) in the control pattern 2.Type: ApplicationFiled: October 25, 2005Publication date: May 4, 2006Applicant: HONDA MOTOR CO., LTD.Inventors: Shinobu Ochiai, Keisuke Urushihara
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Patent number: 6879888Abstract: The object of the present invention is to provide a vehicle drive system which enables setting of appropriate start-up torque and restraining of progress of battery deterioration. A vehicle drive apparatus having an electric motor, which is driven with electricity supplied by a battery, for driving a vehicle or assisting it while driven by an engine includes: a temperature sensor for detecting the battery temperature, an discharge power upper limit setting means for setting an upper limit for discharge power of the battery depending on the battery temperature, a discharge power computing means for computing battery discharge power, a revolution speed sensor for detecting a revolution speed of the engine, a basic start-up torque setting means for setting basic start-up torque requirement depending on the revolution speed and a start-up torque adjust means for decreasing the start-up torque requirement if the discharge power exceeds the discharge power upper limit during engine start-up.Type: GrantFiled: September 13, 2002Date of Patent: April 12, 2005Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Shinobu Ochiai, Yasumichi Ohnuki, Atsushi Shibutani
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Publication number: 20040232883Abstract: An apparatus and method for controlling charging and discharging of an energy storage device. If the charging voltage that is applied exceeds a restriction determining voltage, the power value at that time is held as the charging power upper limit value. In addition, by multiplying a restriction coefficient by the charging power upper limit value while gradually reducing the restriction coefficient until the voltage drops below a restriction removal determining voltage. By setting its result as a control target value of the charging power, the charging power is gradually restricted. In contrast, if the applied charging voltage drops below the restriction removal determining voltage, the charging power is conversely gradually restored to its original state using a control target value obtained by multiplying the restriction coefficient by the charging power upper limit value while gradually increasing the restriction coefficient until the voltage equals or goes above the restriction determining voltage.Type: ApplicationFiled: May 19, 2004Publication date: November 25, 2004Applicant: Honda Motor Co., Ltd.Inventors: Shinobu Ochiai, Kiyoshi Asami, Tomohiro Shiraishi
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Patent number: 6727676Abstract: A control device for a hybrid vehicle which measures the degree of over-discharge of a battery depending on the temperature of the battery, and which performs control for protecting the battery.Type: GrantFiled: January 2, 2003Date of Patent: April 27, 2004Assignee: Honda Giken Kogyo Kabushiki KaishaInventor: Shinobu Ochiai
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Publication number: 20030132730Abstract: A control device for a hybrid vehicle which measures the degree of over-discharge of a battery depending on the temperature of the battery, and which performs control for protecting the battery.Type: ApplicationFiled: January 2, 2003Publication date: July 17, 2003Applicant: Honda Giken Kogyo Kabushiki KaishaInventor: Shinobu Ochiai
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Publication number: 20030088343Abstract: The object of the present invention is to provide a vehicle drive system which enables setting of appropriate start-up torque and restraining of progress of battery deterioration. A vehicle drive apparatus having an electric motor, which is driven with electricity supplied by a battery, for driving a vehicle or assisting it while driven by an engine includes: a temperature sensor for detecting the battery temperature, an discharge power upper limit setting means for setting an upper limit for discharge power of the battery depending on the battery temperature, a discharge power computing means for computing battery discharge power, a revolution speed sensor for detecting a revolution speed of the engine, a basic start-up torque setting means for setting basic start-up torque requirement depending on the revolution speed and a start-up torque adjust means for decreasing the start-up torque requirement if the discharge power exceeds the discharge power upper limit during engine start-up.Type: ApplicationFiled: September 13, 2002Publication date: May 8, 2003Applicant: Honda Giken Kogyo Kabushiki KaishaInventors: Shinobu Ochiai, Yasumichi Ohnuki, Atsushi Shibutani