Patents by Inventor Takuro Hirano
Takuro Hirano 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: 9963141Abstract: A hybrid vehicle control device is provided with at least one controller programmed to control outputs of the engine and the electric motor, an engagement and disengagement of the clutch, and a transmission ratio of the continuously variable transmission in accordance with a driving state. The at least one controller is further programmed to restart the engine while maintaining a released state of the clutch, and downshift the continuously variable transmission to a predetermined transmission ratio for passing over the level difference upon determining that the level difference is present while traveling by a drive force of the motor with the clutch released and the engine stopped.Type: GrantFiled: January 28, 2015Date of Patent: May 8, 2018Assignee: Nissan Motor Co., Ltd.Inventors: Akihiro Yamamoto, Morihiro Nagamine, Akira Takano, Shintaro Oshio, Yoshihisa Kodama, Takuro Hirano, Yukifumi Otsuka
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Patent number: 9758158Abstract: A hybrid vehicle control device is provided with at least one controller that controls the outputs of the engine and of the motor according to the driving state, the engagement and disengagement of the clutch, and the transmission ratio of the continuously variable transmission. The at least one controller is programmed to start the engine and forcibly downshift the continuously variable transmission to a transmission ratio with which it is possible to start on an uphill road upon determining that the vehicle is on an uphill road while in an electric vehicle mode in which it is possible to travel by the drive force of the motor with the clutch released and the engine stopped.Type: GrantFiled: January 28, 2015Date of Patent: September 12, 2017Assignee: Nissan Motor Co., Ltd.Inventors: Akihiro Yamamoto, Morihiro Nagamine, Akira Takano, Shintaro Oshio, Yoshihisa Kodama, Takuro Hirano, Yukifumi Otsuka
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Patent number: 9616883Abstract: A hybrid vehicle includes a mechanical oil pump that is driven by an engine and an electric oil pump that is driven by an electric motor, and is configured to activate the electric oil pump when traveling in an electric traveling mode, in which the engine is stopped and traveling is executed by a driving force from a driving motor.Type: GrantFiled: March 14, 2014Date of Patent: April 11, 2017Assignees: Nissan Motor Co., Ltd., JATCO LTDInventors: Morihiro Nagamine, Akira Takano, Shintaro Oshio, Takuro Hirano, Yoshihisa Kodama, Akihiro Yamamoto
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Publication number: 20170066437Abstract: A hybrid vehicle control device is provided with at least one controller programmed to control outputs of the engine and the electric motor, an engagement and disengagement of the clutch, and a transmission ratio of the continuously variable transmission in accordance with a driving state. The at least one controller is further programmed to restart the engine while maintaining a released state of the clutch, and downshift the continuously variable transmission to a predetermined transmission ratio for passing over the level difference upon determining that the level difference is present while traveling by a drive force of the motor with the clutch released and the engine stopped.Type: ApplicationFiled: January 28, 2015Publication date: March 9, 2017Inventors: Akihiro YAMAMOTO, Morihiro NAGAMINE, Akira TAKANO, Shintaro OSHIO, Yoshihisa KODAMA, Takuro HIRANO, Yukifumi OTSUKA
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Publication number: 20170015301Abstract: A hybrid vehicle control device is provided with at least one controller that controls the outputs of the engine and of the motor according to the driving state, the engagement and disengagement of the clutch, and the transmission ratio of the continuously variable transmission. The at least one controller is programmed to start the engine and forcibly downshift the continuously variable transmission to a transmission ratio with which it is possible to start on an uphill road upon determining that the vehicle is on an uphill road while in an electric vehicle mode in which it is possible to travel by the drive force of the motor with the clutch released and the engine stopped.Type: ApplicationFiled: January 28, 2015Publication date: January 19, 2017Inventors: Akihiro YAMAMOTO, Morihiro NAGAMINE, Akira TAKANO, Shintaro OSHIO, Yoshihisa KODAMA, Takuro HIRANO, Yukifumi OTSUKA
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Patent number: 9545912Abstract: A hybrid vehicle mode-switching control device for a hybrid vehicle controls that an output of an engine and/or motor in response to a mode-switch request. In a case of a difference between an actual transmission gear ratio and a target transmission gear ratio, a deficit with respect to the requested drive power occurs that causes discomfort to the driver. The drive power surplus or deficit caused by the transmission gear ratio deviation can eliminated by correcting of the motor torque and/or the engine torque by a correction amount necessary to eliminate the surplus or deficit of drive power. In this way, the lack of drive power due to the transmission ratio deviation and the driver's sense of discomfort can be eliminated.Type: GrantFiled: October 30, 2013Date of Patent: January 17, 2017Assignee: Nissan Motor Co., Ltd.Inventors: Akira Takano, Shintaro Oshio, Yoshihisa Kodama, Takuro Hirano
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Publication number: 20160009273Abstract: A hybrid vehicle includes a mechanical oil pump that is driven by an engine and an electric oil pump that is driven by an electric motor, and is configured to activate the electric oil pump when traveling in an electric traveling mode, in which the engine is stopped and traveling is executed by a driving force from a driving motor.Type: ApplicationFiled: March 14, 2014Publication date: January 14, 2016Applicants: NISSAN MOTOR CO., LTD., JATCO LTDInventors: Morihiro NAGAMINE, Akira TAKANO, Shintaro OSHIO, Takuro HIRANO, Yoshihisa KODAMA, Akihiro YAMAMOTO
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Publication number: 20150283993Abstract: A hybrid vehicle mode-switching control device for a hybrid vehicle controls that an output of an engine and/or motor in response to a mode-switch request. In a case of a difference between an actual transmission gear ratio and a target transmission gear ratio, a deficit with respect to the requested drive power occurs that causes discomfort to the driver. The drive power surplus or deficit caused by the transmission gear ratio deviation can eliminated by correcting of the motor torque and/or the engine torque by a correction amount necessary to eliminate the surplus or deficit of drive power. In this way, the lack of drive power due to the transmission ratio deviation and the driver's sense of discomfort can be eliminated.Type: ApplicationFiled: October 30, 2013Publication date: October 8, 2015Inventors: Akira Takano, Shintaro Oshio, Yoshihisa Kodama, Takuro Hirano
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Patent number: 5735365Abstract: A rack and pinion are housed in a gear box, a valve sleeve that is joined to the pinion being housed in a valve housing such that the sleeve is free to rotate. A mechanism is provided that joins the gear box and valve housing in any desired relative rotation position. As the gear box and valve housing are formed independently, they may be formed by different manufacturing methods, and replacement of either of them is also easy. Further, an oil pressure port provided at a fixed position in the valve housing may be disposed at any desired rotation angle by selecting the relative rotation position of the gear box and valve housing.Type: GrantFiled: September 5, 1995Date of Patent: April 7, 1998Assignee: Kayaba Kogyo Kabushiki KaishaInventors: Masayuki Sako, Takuro Hirano, Shiro Suo