Patents by Inventor Hiroyuki Ohya
Hiroyuki Ohya 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: 9895987Abstract: A charging-port control device for an electric vehicle includes a charging port engaged with a charging connector, a locking mechanism configured to limit release of an engagement state between the charging connector and the charging port, and a lock state control unit configured to control the locking mechanism to a lock state or an unlock state. The lock state control unit includes a first mode for controlling the locking mechanism to the lock state only when a charge request is being outputted from a vehicle side and a third mode for maintaining a full-time unlock state.Type: GrantFiled: February 20, 2013Date of Patent: February 20, 2018Assignee: NISSAN MOTOR CO., LTD.Inventors: Hirofumi Uchiyama, Hiroyuki Ohya, Tsuyoshi Nakajima
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Publication number: 20150035478Abstract: A charging-port control device for an electric vehicle includes a charging port engaged with a charging connector, a locking mechanism configured to limit release of an engagement state between the charging connector and the charging port, and a lock state control unit configured to control the locking mechanism to a lock state or an unlock state. The lock state control unit includes a first mode for controlling the locking mechanism to the lock state only when a charge request is being outputted from a vehicle side and a third mode for maintaining a full-time unlock state.Type: ApplicationFiled: February 20, 2013Publication date: February 5, 2015Inventors: Hirofumi Uchiyama, Hiroyuki Ohya, Tsuyoshi Nakajima
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Patent number: 7140460Abstract: A driving force control apparatus is provided for a vehicle capable of preventing a shock from being generated by disengaging a clutch disposed between a subordinate drive source and subordinate drive wheels during vehicle travel. When a transition determination is made in which the clutch will be released, e.g., from a four-wheel drive state to a two-wheel drive state, a clutch release section disengage the clutch, upon the drive torque of the drive source substantially reaching a target drive torque in which a difference between an output torque of the clutch and an input torque of the clutch is smaller than a prescribed value in response to the transition determination.Type: GrantFiled: August 7, 2003Date of Patent: November 28, 2006Assignee: Nissan Motor Co., Ltd.Inventors: Kouichi Shimizu, Keiji Kadota, Ping Chen, Tatsuya Kamata, Hiroyuki Ohya, Yasuaki Iwata
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Patent number: 7004018Abstract: A vehicle driving force control apparatus controls a control torque command of an electric motor based on a power supplying condition of an electric power source. The power source supplies electric power to the electric motor that drives at least one wheel of the vehicle. An electric power supplying status detecting section determines an electric power supplying capacity of the electric power source based on the power supplying condition of the power source, while an electric motor torque control section controls the control torque command of the electric motor based on the power supplying condition determined by the electric power supplying status detecting section. Preferably, an internal combustion engine that drives at least one other wheel also drives a generator that acts as the power source of the electric motor. The vehicle driving force control apparatus is especially useful in a four-wheel drive vehicle.Type: GrantFiled: August 8, 2003Date of Patent: February 28, 2006Assignee: Nissan Motor Co., Ltd.Inventors: Keiji Kadota, Kouichi Shimizu, Tatsuya Kamata, Hiroyuki Ohya, Keigo Nishio, Ping Chen
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Patent number: 6931310Abstract: An electric motor diagnosing apparatus is provided in a vehicle having a generator driven by a drive torque of a drive source, an electric motor driven by electric power supplied from the generator, and a wheel driven by the electric motor. The electric motor diagnosing apparatus comprises a counterelectromotive force determining section and an electric motor diagnosing section. The counterelectromotive force determining section determines whether a voltage of electric power supplied from the generator to the electric motor is greater than an induced voltage of a counterelectromotive force of the electric motor. The electric motor diagnosing section drives the electric motor by controlling the generator to supply the electric power to the electric motor, and determines whether the electric motor is rotating, upon determining that the voltage of the electric power supplied from the generator to the electric motor is greater than the electric motor induced voltage.Type: GrantFiled: August 15, 2003Date of Patent: August 16, 2005Assignee: Nissan Motor Co., Ltd.Inventors: Kouichi Shimizu, Hiroyuki Ohya
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Patent number: 6908411Abstract: A vehicle drive control apparatus is provided for detecting clutch trouble early and alert the driver to the need for clutch repair. The vehicle drive control apparatus is provided in a vehicle having a clutch disposed between an electric motor and a wheel driven by the electric motor. The drive control apparatus comprises a clutch control section and a diagnosis section. The clutch control section is configured to control engagement of the clutch to selectively drive the wheel by the electric motor. The diagnosis section is configured to diagnose whether or not the clutch can be operated by controlling the clutch control section to turn on and off the clutch, when the diagnosis section determines that the wheel is not being driven by the electric motor.Type: GrantFiled: August 15, 2003Date of Patent: June 21, 2005Assignee: Nissan Motor Co., Ltd.Inventors: Kouichi Shimizu, Hiroyuki Ohya
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Patent number: 6902511Abstract: A vehicle driving force control apparatus is provided for a vehicle to prevent a shock from being generated when a clutch disposed between a subordinate drive source and subordinate drive wheels is transferred to a disengaged state during vehicle travel. When a transition is made from a four-wheel drive state to a two-wheel drive state, and a clutch is released during vehicle travel, the motor torque is maintained constant at a level of a clutch-release torque required by the electric motor as the output for bringing the torque on the clutch substantially to zero.Type: GrantFiled: August 7, 2003Date of Patent: June 7, 2005Assignee: Nissan Motor, Co., Ltd.Inventors: Kouichi Shimizu, Hiroyuki Ohya
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Publication number: 20040055304Abstract: An electric motor diagnosing apparatus is provided in a vehicle having a generator driven by a drive torque of a drive source, an electric motor driven by electric power supplied from the generator, and a wheel driven by the electric motor. The electric motor diagnosing apparatus comprises a counterelectromotive force determining section and an electric motor diagnosing section. The counterelectromotive force determining section determines whether a voltage of electric power supplied from the generator to the electric motor is greater than an induced voltage of a counterelectromotive force of the electric motor. The electric motor diagnosing section drives the electric motor by controlling the generator to supply the electric power to the electric motor, and determines whether the electric motor is rotating, upon determining that the voltage of the electric power supplied from the generator to the electric motor is greater than the electric motor induced voltage.Type: ApplicationFiled: August 15, 2003Publication date: March 25, 2004Applicant: Nissan Motor Co., Ltd.Inventors: Kouichi Shimizu, Hiroyuki Ohya
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Publication number: 20040040375Abstract: A vehicle driving force control apparatus controls a control torque command of an electric motor based on a power supplying condition of an electric power source. The power source supplies electric power to the electric motor that drives at least one wheel of the vehicle. An electric power supplying status detecting section determines an electric power supplying capacity of the electric power source based on the power supplying condition of the power source, while an electric motor torque control section controls the control torque command of the electric motor based on the power supplying condition determined by the electric power supplying status detecting section. Preferably, an internal combustion engine that drives at least one other wheel also drives a generator that acts as the power source of the electric motor. The vehicle driving force control apparatus is especially useful in a four-wheel drive vehicle.Type: ApplicationFiled: August 8, 2003Publication date: March 4, 2004Applicant: Nissan Motor Co., Ltd.Inventors: Keiji Kadota, Kouichi Shimizu, Tatsuya Kamata, Hiroyuki Ohya, Keigo Nishio, Ping Chen
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Publication number: 20040040817Abstract: A vehicle drive control apparatus is provided for detecting clutch trouble early and alert the driver to the need for clutch repair. The vehicle drive control apparatus is provided in a vehicle having a clutch disposed between an electric motor and a wheel driven by the electric motor. The drive control apparatus comprises a clutch control section and a diagnosis section. The clutch control section is configured to control engagement of the clutch to selectively drive the wheel by the electric motor. The diagnosis section is configured to diagnose whether or not the clutch can be operated by controlling the clutch control section to turn on and off the clutch, when the diagnosis section determines that the wheel is not being driven by the electric motor.Type: ApplicationFiled: August 15, 2003Publication date: March 4, 2004Applicant: Nissan Motor Co., Ltd.Inventors: Kouichi Shimizu, Hiroyuki Ohya
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Publication number: 20040040775Abstract: A vehicle driving force control apparatus is provided for a vehicle to prevent a shock from being generated when a clutch disposed between a subordinate drive source and subordinate drive wheels is transferred to a disengaged state during vehicle travel. When a transition is made from a four-wheel drive state to a two-wheel drive state, and a clutch is released during vehicle travel, the motor torque is maintained constant at a level of a clutch-release torque required by the electric motor as the output for bringing the torque on the clutch substantially to zero.Type: ApplicationFiled: August 7, 2003Publication date: March 4, 2004Applicant: Nissan Motor Co., Ltd.Inventors: Kouichi Shimizu, Hiroyuki Ohya
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Publication number: 20040038775Abstract: A driving force control apparatus is provided for a vehicle capable of preventing a shock from being generated by disengaging a clutch disposed between a subordinate drive source and subordinate drive wheels during vehicle travel. When a transition determination is made in which the clutch will be released, e.g., from a four-wheel drive state to a two-wheel drive state, a clutch release section disengage the clutch, upon the drive torque of the drive source substantially reaching a target drive torque in which a difference between an output torque of the clutch and an input torque of the clutch is smaller than a prescribed value in response to the transition determination.Type: ApplicationFiled: August 7, 2003Publication date: February 26, 2004Applicant: Nissan Motor Co., Ltd.Inventors: Kouichi Shimizu, Keiji Kadota, Ping Chen, Tatsuya Kamata, Hiroyuki Ohya, Yasuaki Iwata