Patents by Inventor Tomohisa Ose
Tomohisa Ose 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).
-
Patent number: 10953879Abstract: A vehicle control apparatus is applied to a vehicle including an engine as traveling drive source and a clutch device in a power transmission path connected to an output shaft of the engine. The vehicle control apparatus causes the vehicle to be in a coasting state by reducing power transmitted in the path by clutch device operation upon satisfaction of a predetermined implementation condition, and cancels coasting state by clutch device operation upon satisfaction of a predetermined coasting cancellation condition including at least an accelerator condition during coasting. The vehicle control apparatus includes a travel determination section determining coasting state of the vehicle, and a clutch control section performing half-clutch control during coasting at least at one of at the beginning of coasting and immediately before coasting is cancelled, the half-clutch control setting a degree of clutch device engagement to an intermediate degree.Type: GrantFiled: April 11, 2017Date of Patent: March 23, 2021Assignee: DENSO CORPORATIONInventors: Toshikazu Akita, Tomohisa Ose, Shigeru Maeda
-
Patent number: 10910972Abstract: A control apparatus is used in an onboard system provided to a vehicle. The onboard system includes an internal combustion engine and a power generator. The power generator generates power and supplies the generated power to an electrical load provided to the vehicle. An output torque of the internal combustion engine causes the vehicle to travel and causes the power generator to generate power. Based on a power supply request by the electrical load, the control apparatus controls the output torque of the internal combustion engine. In response to the output torque being increased based on the power supply request, the control apparatus causes the power generator to generate the power by the output torque, while restricting generated power during an initial period when the output torque is being increased.Type: GrantFiled: November 21, 2019Date of Patent: February 2, 2021Assignee: DENSO CORPORATIONInventors: Kohei Saito, Tomohisa Ose
-
Publication number: 20200091847Abstract: A control apparatus is used in an onboard system provided to a vehicle. The onboard system includes an internal combustion engine and a power generator. The power generator generates power and supplies the generated power to an electrical load provided to the vehicle. An output torque of the internal combustion engine causes the vehicle to travel and causes the power generator to generate power. Based on a power supply request by the electrical load, the control apparatus controls the output torque of the internal combustion engine. In response to the output torque being increased based on the power supply request, the control apparatus causes the power generator to generate the power by the output torque, while restricting generated power during an initial period when the output torque is being increased.Type: ApplicationFiled: November 21, 2019Publication date: March 19, 2020Applicant: DENSO CORPORATIONInventors: Kohei SAITO, Tomohisa OSE
-
Patent number: 10479359Abstract: A restart control device is applied to a vehicle which is provided with an internal combustion engine, an electric motor, a driving wheel, and a clutch. The restart control device has a restart-condition determining portion which determines whether a restart condition for restarting the internal combustion engine is established while the vehicle is coasting; a push-start portion which starts the internal combustion engine by a push-start; a start-up portion which starts the internal combustion engine by use of an electric motor; and a doubly start-up portion which tries to start the internal combustion engine by one of the push-start portion and the start-up portion when the restart-condition determining portion determines that the restart condition is established. The doubly start-up portion tries to start the internal combustion engine by another one of the push-up portion and the start-up portion when the internal combustion engine has not been started.Type: GrantFiled: April 28, 2016Date of Patent: November 19, 2019Assignee: DENSO CORPORATIONInventors: Tomohisa Ose, Tadatoshi Asada, Shigeru Maeda, Takashi Senda
-
Patent number: 10374509Abstract: In a control circuit for controlling a power converter that includes a switch, a power supply circuit outputs electrical power, and a command generator generates a switching command that controls switching operations of the switch, based on the electrical power output from the power supply circuit. A failure mode determiner executes a determination of whether which of failure modes has occurred in the power supply circuit, and outputs a result of the determination. A switch controller selectively executes, based on the result of the determination, a first switch control task and a second switch control task. The first switch control task forcibly shuts down the switch independently of the switching command, and the second switch control task enables the switching operations of the switch to be continuously controlled based on the switching command.Type: GrantFiled: November 19, 2018Date of Patent: August 6, 2019Assignees: DENSO CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Koichi Nishibata, Yusuke Shindo, Tomohisa Ose, Junichi Fukuta, Yasuhiro Terao, Eiichiro Shigehara, Keisuke Hata
-
Publication number: 20190157969Abstract: In a control circuit for controlling a power converter that includes a switch, a power supply circuit outputs electrical power, and a command generator generates a switching command that controls switching operations of the switch, based on the electrical power output from the power supply circuit. A failure mode determiner executes a determination of whether which of failure modes has occurred in the power supply circuit, and outputs a result of the determination. A switch controller selectively executes, based on the result of the determination, a first switch control task and a second switch control task. The first switch control task forcibly shuts down the switch independently of the switching command, and the second switch control task enables the switching operations of the switch to be continuously controlled based on the switching command.Type: ApplicationFiled: November 19, 2018Publication date: May 23, 2019Applicants: DENSO CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Koichi NISHIBATA, Yusuke SHINDO, Tomohisa OSE, Junichi FUKUTA, Yasuhiro TERAO, Eiichiro SHIGEHARA, Keisuke HATA
-
Publication number: 20190118820Abstract: A vehicle control apparatus is applied to a vehicle including an engine as traveling drive source and a clutch device in a power transmission path connected to an output shaft of the engine. The vehicle control apparatus causes the vehicle to be in a coasting state by reducing power transmitted in the path by clutch device operation upon satisfaction of a predetermined implementation condition, and cancels coasting state by clutch device operation upon satisfaction of a predetermined coasting cancellation condition including at least an accelerator condition during coasting. The vehicle control apparatus includes a travel determination section determining coasting state of the vehicle, and a clutch control section performing half-clutch control during coasting at least at one of at the beginning of coasting and immediately before coasting is cancelled, the half-clutch control setting a degree of clutch device engagement to an intermediate degree.Type: ApplicationFiled: April 11, 2017Publication date: April 25, 2019Applicant: DENSO CORPORATIONInventors: Toshikazu AKITA, Tomohisa OSE, Shigeru MAEDA
-
Publication number: 20180080425Abstract: A restart control device is applied to a vehicle which is provided with an internal combustion engine, an electric motor, a driving wheel, and a clutch. The restart control device has a restart-condition determining portion which determines whether a restart condition for restarting the internal combustion engine is established while the vehicle is coasting; a push-start portion which starts the internal combustion engine by a push-start; a start-up portion which starts the internal combustion engine by use of an electric motor; and a doubly start-up portion which tries to start the internal combustion engine by one of the push-start portion and the start-up portion when the restart-condition determining portion determines that the restart condition is established. The doubly start-up portion tries to start the internal combustion engine by another one of the push-up portion and the start-up portion when the internal combustion engine has not been started.Type: ApplicationFiled: April 28, 2016Publication date: March 22, 2018Applicant: DENSO CORPORATIONInventors: Tomohisa OSE, Tadatoshi ASADA, Shigeru MAEDA, Takashi SENDA
-
Publication number: 20160363109Abstract: In a system for controlling an engine that ignites an air-fuel mixture to generate torque, a power generator, and a secondary battery is chargeable by the power generator. An apparatus controls the engine to adjust an actual point of ignition timing of the air-fuel mixture to a desired point of the ignition timing. The apparatus causes the power generator to generate electric power based on output torque of the engine. The output torque of the engine is generated while the actual point of the ignition timing is set to the desired point of the ignition timing. The apparatus adjusts the amount of the electric power generated by the power generator while the actual point of the ignition timing of the engine is set to the desired point of the ignition timing, thus changing the output torque of the engine.Type: ApplicationFiled: June 9, 2016Publication date: December 15, 2016Inventors: Toshikazu AKITA, Shigeru MAEDA, Tomohisa OSE, Ikuro HASHIMOTO
-
Patent number: 9422881Abstract: A vehicle control apparatus includes a condition determination section that determines whether or not an execution permission condition to permit coasting of a vehicle is satisfied, a first control section that causes the vehicle to shift to a first inertia running state by stopping the engine and disengaging the clutch device when the execution permission condition is determined to be satisfied, an auxiliary drive request determination section that determines whether or not an auxiliary drive request to drive the auxiliary has occurred, and a second control section that causes the vehicle to shift to a second inertia running state by starting the engine keeping the clutch device disengaged when the auxiliary drive request is determined to have occurred while the vehicle is running in the first inertia running state.Type: GrantFiled: July 1, 2015Date of Patent: August 23, 2016Assignee: DENSO CORPORATIONInventors: Shigeru Maeda, Tomohisa Ose
-
Publication number: 20160017825Abstract: A vehicle control apparatus includes a condition determination section that determines whether or not an execution permission condition to permit coasting of a vehicle is satisfied, a first control section that causes the vehicle to shift to a first inertia running state by stopping the engine and disengaging the clutch device when the execution permission condition is determined to be satisfied, an auxiliary drive request determination section that determines whether or not an auxiliary drive request to drive the auxiliary has occurred, and a second control section that causes the vehicle to shift to a second inertia running state by starting the engine keeping the clutch device disengaged when the auxiliary drive request is determined to have occurred while the vehicle is running in the first inertia running state.Type: ApplicationFiled: July 1, 2015Publication date: January 21, 2016Inventors: Shigeru Maeda, Tomohisa Ose
-
Publication number: 20150153751Abstract: A power supply circuit converts an input electric power into a target voltage and outputs the target voltage is equipped with a power semiconductor element that is connected between an input and an output, a drive circuit that adjusts operation of the power semiconductor element on the basis of a result of a comparison between an output voltage of the power supply circuit and a threshold voltage based on a first reference voltage, and a first monitoring circuit that compares the output voltage with a normal range based on a second reference voltage and outputs a first signal when the output voltage is deviant from the normal range. In addition, the first reference voltage and the second reference voltage are generated in different reference voltage generation circuits.Type: ApplicationFiled: March 5, 2013Publication date: June 4, 2015Applicants: DENSO CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Eiichiro Shigehara, Keisuke Hata, Junichi Fukuta, Tomohisa Ose, Yusuke Shindo
-
Publication number: 20120242376Abstract: A load drive apparatus includes a switching device, a gate drive circuit, a clamp circuit, a temperature detection circuit, and an arithmetic device. The switching device controls an on-off state of current supply to a load. The gate drive circuit turns on the switching device by controlling a gate voltage of the switching device so that the switching device operates in a full-on state. The clamp circuit clamps the gate voltage of the switching device to a clamp voltage lower than the gate voltage in the full-on state and higher than a mirror voltage. The temperature detection circuit detects a temperature of the switching device. The arithmetic device calculates a voltage corresponding to a variation in a mirror voltage based on the detected temperature and controls the clamp voltage in the clamp circuit so as to be the calculated voltage.Type: ApplicationFiled: March 22, 2012Publication date: September 27, 2012Applicant: DENSO CORPORATIONInventors: Tomohisa OSE, Yoshiyuki Hamanaka, Yasutaka Senda, Ryotaro Miura, Kenji Yamamoto
-
Patent number: 7888976Abstract: A load-driving circuit supplies electric current to a load, such as a resistor of an airbag squib. The load-driving circuit includes high side and low side current control circuits, both connected in series. Each current control circuit is composed of a driving transistor, a resistor and a current mirror circuit for controlling operation of the driving transistor. The components in the load-driving circuit are positioned in an integrated circuit chip to generate different temperature gradients among the components. For example, the low side resistor is positioned close to the high side driving transistor, so that the low side resistor is heated by the high side driving transistor controlled under a constant current control. As the low side resistor is heated, the high side driving transistor is switched from the constant current control to a full-on control. In this manner, controls of both driving transistors are automatically switched thereby to avoid overheating of one of the driving transistors.Type: GrantFiled: March 17, 2009Date of Patent: February 15, 2011Assignee: DENSO CORPORATIONInventors: Tomohisa Ose, Shouichi Okuda
-
Publication number: 20090278572Abstract: A load-driving circuit supplies electric current to a load, such as a resistor of an airbag squib. The load-driving circuit includes high side and low side current control circuits, both connected in series. Each current control circuit is composed of a driving transistor, a resistor and a current mirror circuit for controlling operation of the driving transistor. The components in the load-driving circuit are positioned in an integrated circuit chip to generate different temperature gradients among the components. For example, the low side resistor is positioned close to the high side driving transistor, so that the low side resistor is heated by the high side driving transistor controlled under a constant current control. As the low side resistor is heated, the high side driving transistor is switched from the constant current control to a full-on control. In this manner, controls of both driving transistors are automatically switched thereby to avoid overheating of one of the driving transistors.Type: ApplicationFiled: March 17, 2009Publication date: November 12, 2009Applicant: DENSO CORPORATIONInventors: Tomohisa Ose, Shouichi Okuda