Patents by Inventor Takashige Hinami
Takashige Hinami 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: 8825318Abstract: In a control device for an automatic transmission having a flow control mechanism that causes a part of a working oil discharged from a mechanical oil pump to flow into the mechanical oil pump when a differential pressure between an upstream side and a downstream side of a narrowed portion increases beyond a predetermined value, the narrowed portion being provided in a discharge passage through which the working oil discharged from the mechanical oil pump flows, a line pressure is raised when an oil temperature of the working oil is equal to or higher than a predetermined oil temperature and an engine torque is equal to or smaller than a predetermined engine torque.Type: GrantFiled: February 2, 2011Date of Patent: September 2, 2014Assignees: Jatco Ltd, Nissan Motor Co., Ltd.Inventors: Takashige Hinami, Masaki Watanabe, Yasutaka Kawamura, Kazuya Murota, Hirofumi Michioka
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Patent number: 8150585Abstract: A control system including a friction engagement element, a solenoid valve, an engagement pressure control valve and an electronic control unit, wherein a learning correction amount is divided into an initial learning amount that has no dependence upon an engagement pressure command value and a time-dependent deterioration amount that has dependence upon the engagement pressure command value, and wherein a time-dependent deterioration correction amount is determined according to the engagement pressure command value and a degree of progress of time-dependent deterioration that is indicated by a difference between a learning region correction amount and an initial learning amount which are obtained by a learning control in a learning region that is a limited input torque region, and a final engagement pressure command value is calculated as the learning correction amount by adding the initial learning amount at the time of correction to the time-dependent deterioration correction amount.Type: GrantFiled: March 9, 2009Date of Patent: April 3, 2012Assignee: JATCO LtdInventors: Takashige Hinami, Osamu Sato
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Patent number: 8150555Abstract: A fluid pressure control apparatus for controlling a solenoid valve to increase and decrease a fluid pressure by varying a valve opening degree includes a controller to control the fluid pressure by varying a command current for driving the solenoid valve. The controller calculates a hysteresis correction quantity to reduce a hysteresis effect of a hysteresis characteristic of the fluid pressure outputted from the solenoid valve with respect to the command current varied in an increasing direction and a decreasing direction, and varies the command current to control the fluid pressure to a target pressure in accordance with the hysteresis correction quantity.Type: GrantFiled: December 30, 2009Date of Patent: April 3, 2012Assignee: Jatco LtdInventors: Takashige Hinami, Yoshio Morita
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Publication number: 20110230285Abstract: In a control device for an automatic transmission having a flow control mechanism that causes a part of a working oil discharged from a mechanical oil pump to flow into the mechanical oil pump when a differential pressure between an upstream side and a downstream side of a narrowed portion increases beyond a predetermined value, the narrowed portion being provided in a discharge passage through which the working oil discharged from the mechanical oil pump flows, a line pressure is raised when an oil temperature of the working oil is equal to or higher than a predetermined oil temperature and an engine torque is equal to or smaller than a predetermined engine torque.Type: ApplicationFiled: February 2, 2011Publication date: September 22, 2011Inventors: Takashige HINAMI, Masaki Watanabe, Yasutaka Kawamura, Kazuya Murota, Hirofumi Michioka
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Publication number: 20100211229Abstract: A fluid pressure control apparatus for controlling a solenoid valve to increase and decrease a fluid pressure by varying a valve opening degree includes a controller to control the fluid pressure by varying a command current for driving the solenoid valve. The controller calculates a hysteresis correction quantity to reduce a hysteresis effect of a hysteresis characteristic of the fluid pressure outputted from the solenoid valve with respect to the command current varied in an increasing direction and a decreasing direction, and varies the command current to control the fluid pressure to a target pressure in accordance with the hysteresis correction quantity.Type: ApplicationFiled: December 30, 2009Publication date: August 19, 2010Inventors: Takashige HINAMI, Yoshio MORITA
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Publication number: 20090234547Abstract: A control system including a friction engagement element, a solenoid valve, an engagement pressure control valve and an electronic control unit, wherein a learning correction amount is divided into an initial learning amount that has no dependence upon an engagement pressure command value and a time-dependent deterioration amount that has dependence upon the engagement pressure command value, and wherein a time-dependent deterioration correction amount is determined according to the engagement pressure command value and a degree of progress of time-dependent deterioration that is indicated by a difference between a learning region correction amount and an initial learning amount which are obtained by a learning control in a learning region that is a limited input torque region, and a final engagement pressure command value is calculated as the learning correction amount by adding the initial learning amount at the time of correction to the time-dependent deterioration correction amount.Type: ApplicationFiled: March 9, 2009Publication date: September 17, 2009Inventors: Takashige HINAMI, Osamu SATO
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Patent number: 7540824Abstract: There is provided a control apparatus for a vehicular automatic transmission which reliably inhibits switching between ranges caused by an erroneous operation of a shift lever and enables a vehicle to continue running normally without interfering with the operation of returning the shift lever to a normal position. When the shift lever is switched to a reverse range in a state in which a flag Flag_D_high indicative of a forward high vehicle speed assumes “1”, this operation is determined as being an erroneous operation, and gear shift to a reverse gear position is inhibited from being accomplished. When the shift lever is switched to a forward range in a state in which a flag Flag_R_high indicative of a reverse high vehicle speed assumes “1”, this operation is determined as being an erroneous operation, and gear shift to a forward gear position is inhibited from being accomplished.Type: GrantFiled: July 13, 2006Date of Patent: June 2, 2009Assignee: Jatco LtdInventors: Takashige Hinami, Kazunari Otake
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Publication number: 20070015627Abstract: There is provided a control apparatus for a vehicular automatic transmission which reliably inhibits switching between ranges caused by an erroneous operation of a shift lever and enables a vehicle to continue running normally without interfering with the operation of returning the shift lever to a normal position. When the shift lever is switched to a reverse range in a state in which a flag Flag_D_high indicative of a forward high vehicle speed assumes “1”, this operation is determined as being an erroneous operation, and gear shift to a reverse gear position is inhibited from being accomplished. When the shift lever is switched to a forward range in a state in which a flag Flag_R_high indicative of a reverse high vehicle speed assumes “1”, this operation is determined as being an erroneous operation, and gear shift to a forward gear position is inhibited from being accomplished.Type: ApplicationFiled: July 13, 2006Publication date: January 18, 2007Applicant: JATCO LtdInventors: Takashige Hinami, Kazunari Otake