Patents by Inventor Toshio Okoshi
Toshio Okoshi 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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Publication number: 20150203099Abstract: Provided is a control device such that, when a first engaging device (CL1) is controlled in a sliding engagement state, a decrease in torque transmitted to a wheel (W) in the event of an increase of the temperature of an engaging member of the first engaging device (CL1) is suppressed, while a temperature increase of the engaging member is suppressed. The control device is provided with: a first engagement slide control unit that controls a second engaging device (CL2) to a direct-connection engagement state during a rotating operation of an internal combustion engine (E), and that controls the first engaging device (CL1) to the sliding engagement state; and a temperature increase suppressing control unit that causes an output torque of a rotating electrical machine (MG) to be increased while causing a transmission torque of the first engaging device (CL1) to be decreased when the temperature of the first engaging device (CL1) is increased during first engagement slide control.Type: ApplicationFiled: September 4, 2013Publication date: July 23, 2015Applicant: AISIN AW CO., LTD.Inventors: Satoru Kasuya, Masashi Kito, Toshio Okoshi, Shigeru Sugisaka
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Patent number: 7742851Abstract: An apparatus and a method to stably run an electrically operated vehicle is disclosed. The invention has an electric generator target torque calculation processor for calculating electric generator target torque showing a target value of electric generator torque by feedback control for performing at least integral control; a determination processor for calculating an integral term correction determining value on the basis of an integral term component of the electric generator target torque in the integral control; and a drive motor target torque calculation processor for calculating drive motor target torque showing a target value of drive motor torque on the basis of the integral term correction determining value. Since the drive motor target torque is calculated on the basis of the integral term correction determining value, no error is generated in the drive motor target torque and the electrically operated vehicle is stably run.Type: GrantFiled: March 3, 2005Date of Patent: June 22, 2010Assignee: Aisin AW Co., Ltd.Inventors: Hideki Hisada, Masaki Nomura, Toshio Okoshi
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Patent number: 7353094Abstract: An electrically operated vehicle driving controller has an electrically operated machine driving section for operating an electrically operated machine; a driving section temperature detecting section for detecting the driving section temperature of the electrically operated machine driving section; a limit ratio calculating processor for calculating a limit ratio for limiting the torque of the electrically operated machine on the basis of the driving section temperature; a rotating speed calculating processor for calculating the rotating speed of the electrically operated machine; and a limit torque calculating processor for calculating an electrically operated machine limit torque corresponding to an electrically operated machine maximum torque set corresponding to the rotating speed on the basis of the limit ratio.Type: GrantFiled: May 24, 2004Date of Patent: April 1, 2008Assignee: Aisin AW Co., Ltd.Inventors: Toshio Okoshi, Ken Iwatsuki, Taketo Takeuchi
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Patent number: 7340330Abstract: The invention has an engine maximum torque calculating processor for calculating plural engine maximum torques showing a maximum value of engine torque, and an engine limit torque calculating processor for calculating a minimum value of the respective engine maximum torques as engine limit torque. Because the minimum value of the engine maximum torques is calculated as the engine limit torque, it is possible to reliably prevent the engine from entering an excessive rotating state. Further, because the engine limit torque is calculated on the basis of the minimum value of the engine maximum torques, the engine limit torque can be reliably calculated even when there is an individual difference in the engine, an electric generator, etc. and there are calculation errors further, for example, electric generator target torque and the electric generator maximum torque.Type: GrantFiled: June 1, 2004Date of Patent: March 4, 2008Assignee: Aisin AW Co., Ltd.Inventors: Toshio Okoshi, Hideki Hisada, Kazuo Aoki, Rie Okada
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Patent number: 7228209Abstract: The invention includes a target-engine-speed acquisition element that acquires a target engine speed necessary to reduce engine speed, thereby stopping the engine at a target stop position; a crank-angle acquisition element that acquires a crank angle indicative of the position of a crankshaft; and a target-engine-speed correction element that corrects the target engine speed according to the acquired crank angle. Because the target engine speed is corrected according to the crank angle, the engine can be stopped at the target stop position even if the friction in the engine, the electric motor, etc. varies, the temperature or viscosity of the lubricating and cooling oils varies, or the vehicle is accelerated or decelerated during the reduction of the engine speed.Type: GrantFiled: June 1, 2004Date of Patent: June 5, 2007Assignee: Aisin AW Co., Ltd.Inventors: Kazuyuki Izawa, Hideki Hisada, Masaki Nomura, Kozo Yamaguchi, Toshio Okoshi, Tomochika Inagaki, Kazuma Hasegawa
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Patent number: 7216618Abstract: A control apparatus for driving a vehicle and a control method for driving a vehicle. A control apparatus for driving a vehicle has an engine start permission output control processing module which reads engine rotational speed; determines whether the engine rotational speed takes a value within a predetermined start disable range; does not output an engine start permission when the engine rotational speed takes a value within the start disable range; and outputs an engine start permission when the engine rotational speed takes a value except a value within the start disable range, and has an engine start control processing module which starts an engine when the engine start permission is outputted. An engine start permission is not outputted and the engine is not started when the engine rotational speed takes the value except the value within the start disable range.Type: GrantFiled: February 8, 2005Date of Patent: May 15, 2007Assignee: Aisin AW Co., Ltd.Inventors: Ken Iwatsuki, Toshio Okoshi, Takeshi Hara
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Patent number: 7189177Abstract: An electrically operated vehicle drive controller used with an electrically operated machine, an output shaft differentially rotatably connected to an engine and the electrically operated machine, and a differential rotating unit having a first differential rotating element connected to the electrically operated machine, a second differential rotating element connected to the output shaft, a third differential rotating element connected to the engine, a rotating body rotatably arranged on a support shaft in one of the first to third differential rotating elements and meshed with the other two differential rotating elements, and an engine control processor that controls the operation of the engine on the basis of the rotating speed of the rotating body. Because the operation of the engine is controlled on the basis of the rotating speed of the rotating body, it is possible to prevent the rotating speed of the rotating body from becoming higher than an upper limit value.Type: GrantFiled: September 23, 2004Date of Patent: March 13, 2007Assignee: Aisin AW Co., Ltd.Inventors: Eiji Takasu, Kenji Douzono, Toshio Okoshi
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Patent number: 7117071Abstract: A hybrid vehicle drive apparatus including an electric power generator mechanically connected to the engine, a drive motor driven by at least one of an electric current generated by the electric power generator and an electric current supplied from a battery; a detector that detects a battery state of the battery and a controller that sets a target torque of the drive motor based on the battery state.Type: GrantFiled: March 7, 2002Date of Patent: October 3, 2006Assignee: Aisin AW Co., Ltd.Inventors: Kazuo Aoki, Toshio Okoshi, Hiroyuki Kojima, Kozo Yamaguchi, Ken Iwatsuki
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Publication number: 20060037573Abstract: A control apparatus for driving a vehicle and a control method for driving a vehicle. A control apparatus for driving a vehicle has an engine start permission output control processing module which reads engine rotational speed; determines whether the engine rotational speed takes a value within a predetermined start disable range; does not output an engine start permission when the engine rotational speed takes a value within the start disable range; and outputs an engine start permission when the engine rotational speed takes a value except a value within the start disable range, and has an engine start control processing module which starts an engine when the engine start permission is outputted. An engine start permission is not outputted and the engine is not started when the engine rotational speed takes the value except the value within the start disable range.Type: ApplicationFiled: February 8, 2005Publication date: February 23, 2006Inventors: Ken Iwatsuki, Toshio Okoshi, Takeshi Hara
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Patent number: 6960152Abstract: A hybrid control device including a drive motor that compensates for an excessive or a deficient amount of engine torque with respect to a vehicle requirement torque and a controller that detects a torque limit index, which is an index that limits a drive motor torque, determines whether the torque limit index has exceeded a threshold value, limits the drive motor torque when the torque limit index has exceeded the threshold value, and adjusts the engine torque in accordance with a limiting of the drive motor torque.Type: GrantFiled: December 26, 2002Date of Patent: November 1, 2005Assignee: Aisin AW Co., Ltd.Inventors: Kazuo Aoki, Toshio Okoshi
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Publication number: 20050203679Abstract: An apparatus and a method to stably run an electrically operated vehicle is disclosed. The invention has an electric generator target torque calculation processor for calculating electric generator target torque showing a target value of electric generator torque by feedback control for performing at least integral control; a determination processor for calculating an integral term correction determining value on the basis of an integral term component of the electric generator target torque in the integral control; and a drive motor target torque calculation processor for calculating drive motor target torque showing a target value of drive motor torque on the basis of the integral term correction determining value. Since the drive motor target torque is calculated on the basis of the integral term correction determining value, no error is generated in the drive motor target torque and the electrically operated vehicle is stably run.Type: ApplicationFiled: March 3, 2005Publication date: September 15, 2005Inventors: Hideki Hisada, Masaki Nomura, Toshio Okoshi
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Publication number: 20050070397Abstract: An electrically operated vehicle drive controller used with an electrically operated machine, an output shaft differentially rotatably connected to an engine and the electrically operated machine, and a differential rotating unit having a first differential rotating element connected to the electrically operated machine, a second differential rotating element connected to the output shaft, a third differential rotating element connected to the engine, a rotating body rotatably arranged on a support shaft in one of the first to third differential rotating elements and meshed with the other two differential rotating elements, and an engine control processor that controls the operation of the engine on the basis of the rotating speed of the rotating body. Because the operation of the engine is controlled on the basis of the rotating speed of the rotating body, it is possible to prevent the rotating speed of the rotating body from becoming higher than an upper limit value.Type: ApplicationFiled: September 23, 2004Publication date: March 31, 2005Applicant: AISIN AW CO., LTD.Inventors: Eiji Takasu, Kenji Douzono, Toshio Okoshi
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Publication number: 20040255904Abstract: The invention includes a target-engine-speed acquisition element that acquires a target engine speed necessary to reduce engine speed, thereby stopping the engine at a target stop position; a crank-angle acquisition element that acquires a crank angle indicative of the position of a crankshaft; and a target-engine-speed correction element that corrects the target engine speed according to the acquired crank angle. Because the target engine speed is corrected according to the crank angle, the engine can be stopped at the target stop position even if the friction in the engine, the electric motor, etc. varies, the temperature or viscosity of the lubricating and cooling oils varies, or the vehicle is accelerated or decelerated during the reduction of the engine speed.Type: ApplicationFiled: June 1, 2004Publication date: December 23, 2004Applicant: AISIN AW CO., LTD.Inventors: Kazuyuki Izawa, Hideki Hisada, Masaki Nomura, Kozo Yamaguchi, Toshio Okoshi, Tomochika Inagaki, Kazuma Hasegawa
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Publication number: 20040249525Abstract: The invention has an engine maximum torque calculating processor for calculating plural engine maximum torques showing a maximum value of engine torque, and an engine limit torque calculating processor for calculating a minimum value of the respective engine maximum torques as engine limit torque. Because the minimum value of the engine maximum torques is calculated as the engine limit torque, it is possible to reliably prevent the engine from entering an excessive rotating state. Further, because the engine limit torque is calculated on the basis of the minimum value of the engine maximum torques, the engine limit torque can be reliably calculated even when there is an individual difference in the engine, an electric generator, etc. and there are calculation errors further, for example, electric generator target torque and the electric generator maximum torque.Type: ApplicationFiled: June 1, 2004Publication date: December 9, 2004Applicant: AISIN AW CO., LTD.Inventors: Toshio Okoshi, Hideki Hisada, Kazuo Aoki, Rie Okada
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Publication number: 20040249518Abstract: An electrically operated vehicle driving controller has an electrically operated machine driving section for operating an electrically operated machine; a driving section temperature detecting section for detecting the driving section temperature of the electrically operated machine driving section; a limit ratio calculating processor for calculating a limit ratio for limiting the torque of the electrically operated machine on the basis of the driving section temperature; a rotating speed calculating processor for calculating the rotating speed of the electrically operated machine; and a limit torque calculating processor for calculating an electrically operated machine limit torque corresponding to an electrically operated machine maximum torque set corresponding to the rotating speed on the basis of the limit ratio.Type: ApplicationFiled: May 24, 2004Publication date: December 9, 2004Applicant: AISIN AW CO., LTD.Inventors: Toshio Okoshi, Ken Iwatsuki, Taketo Takeuchi
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Publication number: 20040235613Abstract: A hybrid control device including a drive motor that compensates for an excessive or a deficient amount of engine torque with respect to a vehicle requirement torque and a controller that detects a torque limit index, which is an index that limits a drive motor torque, determines whether the torque limit index has exceeded a threshold value, limits the drive motor torque when the torque limit index has exceeded the threshold value, and adjusts the engine torque in accordance with a limiting of the drive motor torque.Type: ApplicationFiled: January 23, 2004Publication date: November 25, 2004Inventors: Kazuo Aoki, Toshio Okoshi
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Patent number: 6757598Abstract: A hybrid type vehicle drive control apparatus having a generator; a generator inverter for driving the generator; a drive motor; a drive motor inverter for driving the drive motor; a battery connected to the generator inverter and the drive motor inverter; a first voltage detection device that detects a voltage applied to the generator inverter; a second voltage detection device that detects a voltage applied to the drive motor inverter; a third voltage detection device that detects a battery voltage; and a system voltage determination processing means for determining a system voltage based on detection results provided by the first to third voltage detection devices.Type: GrantFiled: July 30, 2002Date of Patent: June 29, 2004Assignee: Aisin AW Co., Ltd.Inventor: Toshio Okoshi
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Patent number: 6722457Abstract: A hybrid vehicle includes an engine and a first electric motor mechanically connected to the engine and to a drive wheel. The engine is startable by the first electric motor. The hybrid vehicle further includes: start condition satisfaction determination processing system and method for determining whether a variable that varies corresponding to the rotation of the drive wheel is equal to or greater than a threshold set within a range that does not exceed an upper limit value prescribed by a maximum torque of the first electric motor and a torque of the first electric motor needed to start the engine; and engine start instruction output processing system and method for outputting an engine start instruction if the variable is equal to or greater than the threshold. If the variable is greater than or equal to the threshold, the engine start instruction is outputted, and the engine is immediately started.Type: GrantFiled: October 29, 2001Date of Patent: April 20, 2004Assignee: Aisin AW Co., Ltd.Inventors: Kozo Yamaguchi, Hideki Hisada, Kazuo Aoki, Toshio Okoshi
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Publication number: 20040045751Abstract: An object of the invention is to provide a hybrid vehicle drive apparatus, a control method of a hybrid vehicle drive apparatus, and a program thereof which are capable of preventing an engine (11) from racing at the time of sharp acceleration of the vehicle and therefore preventing a degraded state of exhaust gas, and therefore increasing the overall output. The invention includes: an electric power generator (16) mechanically connected to the engine (11); a drive motor (25) driven by at least one of an electric current generated by the electric power generator (16) and an electric current supplied from a battery (43); battery state detecting means for detecting a battery state of the battery (43); target drive motor torque setting means (90) for setting a target torque of the drive motor based on the battery state. In this case, the target drive motor torque is set based on the battery state.Type: ApplicationFiled: August 26, 2003Publication date: March 11, 2004Inventors: Kazuo Aoki, Toshio Okoshi, Hiroyuki Kojima, Kozo Yamaguchi, Ken Iwatsuki
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Publication number: 20030130772Abstract: An electric vehicle drive control device includes an electric machine drive portion equipped with a first electric machine connected to a wheel of an electric vehicle and a second electric machine for running the electric vehicle and a controller that judges whether a stall determination condition which indicates whether the electric vehicle is in a stalled state is established, limits, if the stall determination conditions is established, an electric machine target torque of the second electric machine and compensates with an electric machine target torque of the first electric machine according to an amount of the electric machine target torque of the second electric machine that was limited, drives the first electric machine based on the compensated electric machine target torque of the first electric machine and drives the second electric machine based on the limited electric machine target torque of the second electric machine.Type: ApplicationFiled: December 24, 2002Publication date: July 10, 2003Applicant: AISIN AW CO., LTD.Inventors: Masayoshi Yanagida, Hiromichi Agata, Toshio Okoshi