Patents by Inventor Yoichi YAMASHIRO
Yoichi YAMASHIRO 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: 11674459Abstract: A control apparatus includes: a data acquisition part that is configured to acquire torque data indicating a drive torque of an electric motor, rotation number data indicating a rotation number of the electric motor, and DC voltage data indicating a DC voltage supplied to an inverter which supplies an AC current to the electric motor; a determination basis derivation part that is configured to derive a determination basis based on a drive efficiency of the electric motor by using the torque data, the rotation number data, and the DC voltage data; and a control method determination part that is configured to determine, based on the determination basis, which one of a one-pulse control and a pulse-width modulation control is employed as a control method of the inverter.Type: GrantFiled: September 21, 2020Date of Patent: June 13, 2023Assignee: HONDA MOTOR CO., LTD.Inventors: Masaki Tanaka, Yoichi Yamashiro
-
Publication number: 20210087985Abstract: A control apparatus includes: a data acquisition part that is configured to acquire torque data indicating a drive torque of an electric motor, rotation number data indicating a rotation number of the electric motor, and DC voltage data indicating a DC voltage supplied to an inverter which supplies an AC current to the electric motor; a determination basis derivation part that is configured to derive a determination basis based on a drive efficiency of the electric motor by using the torque data, the rotation number data, and the DC voltage data; and a control method determination part that is configured to determine, based on the determination basis, which one of a one-pulse control and a pulse-width modulation control is employed as a control method of the inverter.Type: ApplicationFiled: September 21, 2020Publication date: March 25, 2021Inventors: Masaki Tanaka, Yoichi Yamashiro
-
Patent number: 10220832Abstract: A vehicle includes a rotary electric machine, an internal combustion engine, a temperature sensor, and a limiter. The rotary electric machine generates power to move the vehicle. The internal combustion engine is started by the rotary electric machine to generate power to move the vehicle. The temperature sensor detects temperature of the rotary electric machine or of a drive circuit for the rotary electric machine. The limiter restricts the power generated by the rotary electric machine if the temperature is higher than a first threshold temperature. The start prohibitor prohibits the rotary electric machine from starting the internal combustion engine if the temperature is higher than a second threshold temperature which is higher than the first threshold temperature.Type: GrantFiled: February 22, 2017Date of Patent: March 5, 2019Assignee: HONDA MOTOR CO., LTD.Inventors: Yoichi Yamashiro, Shinji Mikami
-
Patent number: 10177966Abstract: A vehicle control system includes electronic controllers and first and second communications networks. The electronic controllers control a vehicle including an internal combustion engine and a drive motor. The electronic controllers include a management controller to manage travel control of the vehicle and a motor drive controller to control the drive motor. The first and second communications networks connect the electronic controllers together. The electronic controllers communicate via the first and second communications networks. The motor drive controller is configured to stop the drive motor when it is determined that a fault has occurred in the first communications network and configured to transmit information indicating that the fault has occurred in the first communications network to the management controller via the second communications network.Type: GrantFiled: March 22, 2017Date of Patent: January 8, 2019Assignee: HONDA MOTOR CO., LTD.Inventors: Atsushi Kurauchi, Shinji Mikami, Yasuhiro Ohara, Yoichi Yamashiro, Yoshikazu Fujimoto, Shintaro Mito
-
Patent number: 9944280Abstract: A vehicle control system includes: multiple control units which controls operation of a vehicle including an internal combustion engine, a first electric motor connected to the internal combustion engine, and a second electric motor; and a network connected to the control units such that the control units perform communication with each other. The control units include a first control unit which controls the internal combustion engine, a second control unit which controls the first motor, and a third control unit which controls the second motor, and each detect abnormality in communication via the network among the control units. Upon detection of abnormality in communication between the second control unit and the other control units via the network, the first control unit stops operation of the internal combustion engine, and the third control unit performs control such that the second motor outputs power for the vehicle to travel.Type: GrantFiled: May 18, 2017Date of Patent: April 17, 2018Assignee: HONDA MOTOR CO., LTD.Inventors: Shinji Mikami, Yoichi Yamashiro, Yoshikazu Fujimoto, Shintaro Mito, Yasuhiro Ohara
-
Publication number: 20170334437Abstract: A vehicle control system includes: multiple control units which controls operation of a vehicle including an internal combustion engine, a first electric motor connected to the internal combustion engine, and a second electric motor; and a network connected to the control units such that the control units perform communi cati on with each other. The control units include a first control unit which controls the internal combustion engine, a second control unit which controls the first motor, and a third control unit which controls the second motor, and each detect abnormality in communication via the network among the control units. Upon detection of abnormality in communication between the second control unit and the other control units via the network, the first control unit stops operation of the internal combustion engine, and the third control unit performs control such that the second motor outputs power for the vehicle to travel.Type: ApplicationFiled: May 18, 2017Publication date: November 23, 2017Applicant: HONDA MOTOR CO., LTD.Inventors: Shinji Mikami, Yoichi Yamashiro, Yoshikazu Fujimoto, Shintaro Mito, Yasuhiro Ohara
-
Publication number: 20170282903Abstract: A vehicle includes a rotary electric machine, an internal combustion engine, a temperature sensor, and a limiter. The rotary electric machine generates power to move the vehicle. The internal combustion engine is started by the rotary electric machine to generate power to move the vehicle. The temperature sensor detects temperature of the rotary electric machine or of a drive circuit for the rotary electric machine. The limiter restricts the power generated by the rotary electric machine if the temperature is higher than a first threshold temperature. The start prohibitor prohibits the rotary electric machine from starting the internal combustion engine if the temperature is higher than a second threshold temperature which is higher than the first threshold temperature.Type: ApplicationFiled: February 22, 2017Publication date: October 5, 2017Applicant: HONDA MOTOR CO., LTD.Inventors: Yoichi YAMASHIRO, Shinji MIKAMI
-
Publication number: 20170288951Abstract: A vehicle control system includes electronic controllers and first and second communications networks. The electronic controllers control a vehicle including an internal combustion engine and a drive motor. The electronic controllers include a management controller to manage travel control of the vehicle and a motor drive controller to control the drive motor. The first and second communications networks connect the electronic controllers together. The electronic controllers communicate via the first and second communications networks. The motor drive controller is configured to stop the drive motor when it is determined that a fault has occurred in the first communications network and configured to transmit information indicating that the fault has occurred in the first communications network to the management controller via the second communications network.Type: ApplicationFiled: March 22, 2017Publication date: October 5, 2017Applicant: HONDA MOTOR CO., LTD.Inventors: Atsushi KURAUCHI, Shinji MIKAMI, Yasuhiro OHARA, Yoichi YAMASHIRO, Yoshikazu FUJIMOTO, Shintaro MITO