Patents by Inventor Tatsuya Ozeki
Tatsuya Ozeki 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: 6736753Abstract: Methods and apparatus for a vehicle drive control apparatus changes in the transfer torque capacity of a power transfer device according to various states of operation with respect to at least one drive power source. The vehicle drive control apparatus includes a power transfer device that has a variable transfer torque capacity and the drive power sources that rotate a drive wheel via the power transfer device. A controller is included that causes a vehicle to selectively run in a variety of run modes that differ in states of operation with respect to at least one of the drive power sources. The controller changes the transfer torque capacity of the power transfer device in accordance with the various run modes. According to the vehicle drive control apparatus, a target oil pressure is raised by a predetermined amount when the mode of run is change, or when the vehicle descends in a direction opposite to a vehicle starting direction at the time of a hill climb start.Type: GrantFiled: April 18, 2002Date of Patent: May 18, 2004Assignee: Toyota Jidosha Kabushiki KaishaInventors: Hiroatsu Endo, Tatsuya Ozeki, Kazumi Hoshiya
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Publication number: 20040063539Abstract: A hydraulic control apparatus for a vehicle including an electric oil pump, a pump control portion which controls the electric oil pump, a hydraulic circuit portion which supplies a hydraulic pressure from the electric oil pump to an actuator of a transaxle of the vehicle, a hydraulic circuit control portion which outputs a control signal to the hydraulic circuit portion, and an oil pump rotation control portion which is provided in the pump control portion and which controls a rotational state of the electric oil pump according to a change in a control status of the hydraulic circuit control portion.Type: ApplicationFiled: September 3, 2003Publication date: April 1, 2004Inventors: Hiroatsu Endo, Shinichi Kojima, Tatsuya Ozeki
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Patent number: 6565480Abstract: A control apparatus for a drive system, in which a power source is activated to output a torque by an energy fed from an energy source so that the torque is transmitted to rotary members through a torque transmission element having a variable transmission torque capacity. The stop of the power source due to the exhaustion of energy is predicted to increase the transmission torque capacity of the torque transmission element.Type: GrantFiled: December 19, 2001Date of Patent: May 20, 2003Assignee: Toyota Jidosha Kabushiki KaishaInventors: Hiroatsu Endo, Tatsuya Ozeki, Yukio Kinugasa, Kazumi Hoshiya
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Patent number: 6565473Abstract: A hydraulic pressure control apparatus for controlling an automatic transmission of an automotive vehicle, with a pressurized working fluid delivered from a hydraulic pump driven by an electric motor, wherein a pump control device is operated upon starting of the electric motor to start the hydraulic pump, for controlling the electric motor, such that a rate of increase of the operating speed of the hydraulic pump decreases with a decrease in the temperature of the working fluid detected by a temperature detector.Type: GrantFiled: January 16, 2002Date of Patent: May 20, 2003Assignee: Toyota Jidosha Kabushiki KaishaInventors: Hiroatsu Endo, Masatoshi Ito, Tatsuya Ozeki
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Publication number: 20020173391Abstract: Methods and apparatus for a vehicle drive control apparatus changes in the transfer torque capacity of a power transfer device according to various states of operation with respect to at least one drive power source. The vehicle drive control apparatus includes a power transfer device that has a variable transfer torque capacity and the drive power sources that rotate a device wheel via the power transfer device. A controller is included that causes a vehicle to selectively run in a variety of run modes that differ in states of operation with respect to at least one of the drive power sources. The controller changes the transfer torque capacity of the power transfer device in accordance with the various run modes. According to the vehicle device control apparatus, a target oil pressure is raised by a predetermined amount when the mode of run is change, or when the vehicle descends in a direction opposite to a vehicle starting direction at the time of a hill climb start.Type: ApplicationFiled: April 18, 2002Publication date: November 21, 2002Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroatsu Endo, Tatsuya Ozeki, Kazumi Hoshiya
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Publication number: 20020173895Abstract: A control system of a continuously variable transmission for a vehicle compensates for delays in an estimated input torque TINE based on a gradient value (variation) of the estimated input torque TINE,. For example, a friction force being applied to a driving belt of a continuously variable transmission is regulated according to the compensated estimated input torque TINE. Accordingly, an appropriate torque transmitting capacity is maintained in the transmission even at a rapid accelerating operation of the vehicle, while realizing good fuel efficiency.Type: ApplicationFiled: April 30, 2002Publication date: November 21, 2002Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Ichiro Kitaori, Hiroatsu Endo, Tatsuya Ozeki
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Publication number: 20020105225Abstract: A first hydraulic pump and a second hydraulic pump are respectively mounted to both ends of a rotary shaft in an electric motor, whereby it is possible to drive both of the first hydraulic pump and the second hydraulic pump by one electric motor. Since the electric motor is driven and controlled so as to have any higher rotational speed among a rotational speed of the first hydraulic pump for obtaining an amount of working fluid required in a hydraulic control circuit for a power steering apparatus and a rotational speed of the second hydraulic pump for obtaining an amount of working fluid required in a hydraulic control circuit for a power train by a hydraulic pump drive controlling portion, it is possible to necessarily and sufficiently secure the working fluids respectively required in the power steering hydraulic control circuit and the power train hydraulic control circuit which are independent from each other, by a little electric power consumption.Type: ApplicationFiled: January 31, 2002Publication date: August 8, 2002Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroatsu Endo, Tatsuya Ozeki, Akira Kasamatsu, Nobuyuki Nagashima, Mitsuhiro Umeyama, Hisanori Nomoto, Yuji Iwase, Akira Murakami, Mitsuhiro Nada
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Publication number: 20020094910Abstract: A hydraulic pressure control apparatus for controlling an automatic transmission of an automotive vehicle, with a pressurized working fluid delivered from a hydraulic pump driven by an electric motor, wherein a pump control device is operated upon starting of the electric motor to start the hydraulic pump, for controlling the electric motor, such that a rate of increase of the operating speed of the hydraulic pump decreases with a decrease in the temperature of the working fluid detected by a temperature detector.Type: ApplicationFiled: January 16, 2002Publication date: July 18, 2002Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroatsu Endo, Masatoshi Ito, Tatsuya Ozeki
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Publication number: 20020082136Abstract: A control apparatus for a drive system, in which a power source is activated to output a torque by an energy fed from an energy source so that the torque is transmitted to rotary members through a torque transmission element having a variable transmission torque capacity. The stop of the power source due to the exhaustion of energy is predicted to increase the transmission torque capacity of the torque transmission element.Type: ApplicationFiled: December 19, 2001Publication date: June 27, 2002Applicant: Toyota Jidosha Kabushiki KaishaInventors: Hiroatsu Endo, Tatsuya Ozeki, Yukio Kinugasa, Kazumi Hoshiya
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Publication number: 20020023789Abstract: A hybrid vehicle having an engine and a motor to be controlled independently of each other for running the vehicle. This hybrid vehicle is given a braking demand detecting function to detect a braking demand through an idle ON of the engine while the vehicle is running, and a first braking function to suppress the rise in the vehicle speed of the vehicle by a regenerative braking force of the motor if the braking demand is detected by the braking demand detecting function.Type: ApplicationFiled: October 26, 2001Publication date: February 28, 2002Applicant: Toyota Jidosha Kabushiki KaishaInventors: Kunio Morisawa, Tatsuya Ozeki
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Patent number: 6334498Abstract: A hybrid vehicle having an engine and a motor to be controlled independently of each other for running the vehicle. This hybrid vehicle is given a braking demand detecting function to detect a braking demand through an idle ON of the engine while the vehicle is running, and a first braking function to suppress the rise in the vehicle speed of the vehicle by a regenerative braking force of the motor if the braking demand is detected by the braking demand detecting function.Type: GrantFiled: July 19, 2000Date of Patent: January 1, 2002Assignee: Toyota Jidosha Kabushiki KaishaInventors: Kunio Morisawa, Tatsuya Ozeki
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Patent number: 6119799Abstract: A hybrid vehicle having an engine and a motor to be controlled independently of each other for running the vehicle. This hybrid vehicle is given a. braking demand detecting function to detect a braking demand through an idle ON of the engine while the vehicle is running, and a first braking function to suppress the rise in the vehicle speed of the vehicle by a regenerative braking force of the motor if the braking demand is detected by the braking demand detecting function.Type: GrantFiled: September 15, 1999Date of Patent: September 19, 2000Assignee: Toyota Jidosha Kabushiki KaishaInventors: Kunio Morisawa, Tatsuya Ozeki
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Patent number: 5984034Abstract: A hybrid vehicle having an engine and a motor to be controlled independently of each other for running the vehicle. This hybrid vehicle is given a braking demand detecting function to detect a braking demand through an idle ON of the engine while the vehicle is running, and a first braking function to suppress the rise in the vehicle speed of the vehicle by a regenerative braking force of the motor if the braking demand is detected by the braking demand detecting function.Type: GrantFiled: April 30, 1997Date of Patent: November 16, 1999Assignee: Toyota Jidosha Kabushiki KaishaInventors: Kunio Morisawa, Tatsuya Ozeki