Patents by Inventor Yoshiyuki Yoshida
Yoshiyuki Yoshida 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: 20070027031Abstract: A metal oxide catalyst material which comprises one or more of transition metal elements having a 4d shell electron or a 5d shell electron as an electron bearing the electroconductivity thereof; and a catalyst for treating a combustion exhaust gas comprising the catalyst material. The contact of an exhaust gas with the metal oxide catalyst material allows harmful substances such as nitrogen oxides contained in the following exhaust gases to be decomposed or removed as a whole and simultaneously.Type: ApplicationFiled: April 30, 2004Publication date: February 1, 2007Applicants: National Inst. of Adv. Indus. Science and Tech, SFC CO., LTD.Inventors: Shinichi Ikeda, Yoshiyuki Yoshida, Norio Umeyama, Hideo Abe, Yasuhito Tanaka, Ariyoshi Ogasawara
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Patent number: 7130723Abstract: An object of the present invention is to provide a control unit for vehicle where increase in number of input/output and upgrading of function can easily be performed and, in addition to this, changing of a program in a control unit can easily be performed even when a single-chip micro-computer is used. In order to cope with an increase in input/output points and addition of function, a control unit is constructed such as to comprise interface software memory means storing an interface software program for connecting an application software program with an OS (operating system) in an internal ROM, a CPU (central processing unity for performing computation of the application software program and the interface software program, a RAM (erasable memory) storing data such as the result of computation, an I/O unit for extending the control unit, and extending means for communicating memory data through a bus or a LAN.Type: GrantFiled: April 8, 2003Date of Patent: October 31, 2006Assignee: Hitachi, Ltd.Inventors: Toshimichi Minowa, Yoshiyuki Yoshida, Junichi Ishii, Shigeki Morinaga, Hiroshi Katayama, Mitsuo Kayano, Kenichiro Kurata
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Publication number: 20060206241Abstract: A vehicle control unit includes interface software memory means storing an interface software program for connecting an application software program with an OS (operating system) in an internal ROM, a CPU (central processing unit) for performing computation for the application software program and the interface software program, a RAM (erasable memory) storing data such as the result of computation, an I/O unit for extending the control unit, and extending means for communicating memory data through a bus or a LAN. A single-chip micro-computer used in vehicle control permits an increase in input/output points or the addition of functionality, in which case an application software program can continue to be used simply by rewriting the interface software program, without further remanufacturing of the core unit.Type: ApplicationFiled: January 23, 2006Publication date: September 14, 2006Applicant: HITACHI, LTD.Inventors: Toshimichi Minowa, Yoshiyuki Yoshida, Junichi Ishii, Shigeki Morinaga, Niroshi Katayama, Mitsuo Kayano, Kenichiro Kurata
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Controller, control method and control system for controlling a motor vehicle gear-type transmission
Publication number: 20060185459Abstract: A motor vehicle gear-type transmission has an input shaft clutch, multiple gear pairs, multiple mesh units, and an input shaft clutch actuator which adjusts the position or pressure load of the pressure member of the input shaft clutch. A transmission control unit changes, by means of at least one of the parameters that each indicate a state of the gear-type transmission or of the vehicle, a position or pressure load at which the pressure member is caused to stand by while the driving shaft of the vehicle is in a stopped state or during changeover of the mesh unit that connects to one of the gear pairs. A controller, control method, and control system for a motor vehicle gear-type transmission, adapted to enable a friction transmission unit to be controlled to an optimum position according to a particular motor vehicle state or the like can be provided.Type: ApplicationFiled: February 14, 2006Publication date: August 24, 2006Applicant: HITACHI, LTD.Inventors: Tetsuo Matsumura, Yoshiyuki Yoshida, Kentaro Shishido, Tatsuya Ochi -
Publication number: 20040249986Abstract: An object of the present invention is to provide a control unit for vehicle where increase in number of input/output and upgrading of function can easily be performed and, in addition to this, changing of a program in a control unit can easily be performed even when a single-chip micro-computer is used.Type: ApplicationFiled: April 8, 2003Publication date: December 9, 2004Applicant: Hitachi, Ltd.Inventors: Toshimichi Minowa, Yoshiyuki Yoshida, Junichi Ishii, Shigeki Morinaga, Hiroshi Katayama, Mitsuo Kayano, Kenichiro Kurata
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Publication number: 20040162172Abstract: A bicycle crank assembly has a right crank crimp-fastened to a crank shaft in such a manner that the external appearance is attractive. The crank shaft has a first and second portions with the second portion being positioned on the right side of the first portion and having a larger diameter than the first portion. The right crank has a sprocket mounting part, a right crank arm part, and an engagement bore formed in the center of the sprocket mounting part. The right crank is crimp-fastened to the crank shaft by installing the second portion of the crank shaft into the engagement bore and pressing the periphery of the engagement bore toward the outside in the axial direction of the crank shaft such that the pressed portion bulges radially inward and an annular space is formed between the crank shaft and the engagement bore.Type: ApplicationFiled: February 9, 2004Publication date: August 19, 2004Applicant: Shimano Inc.Inventors: Masahiro Yamanaka, Yoko Terasawa, Sota Hamada, Takahiro Nakano, Yoshiyuki Yoshida, Takashi Ishihara, Toshiaki Tatsumi
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Patent number: 6591167Abstract: An object of the present invention is to provide a control unit for vehicle where increase in number of input/output and upgrading of function can easily be performed and, in addition to this, changing of a program in a control unit can easily be performed even when a single-chip micro-computer is used. In order to cope with an increase in input/output points and addition of function, a control unit is constructed such as to comprise interface software memory means storing an interface software program for connecting an application software program with an OS (operating system) in an internal ROM, a CPU (central processing unit) for performing computation of the application software program and the interface software program, a RAM (erasable memory) storing data such as the result of computation, an I/O unit for extending the control unit, and extending means for communicating memory data through a bus or a LAN.Type: GrantFiled: July 6, 2000Date of Patent: July 8, 2003Assignee: Hitachi, Ltd.Inventors: Toshimichi Minowa, Yoshiyuki Yoshida, Junichi Ishii, Shigeki Morinaga, Hiroshi Katayama, Mitsuo Kayano, Kenichiro Kurata
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Patent number: 6543410Abstract: In a direct injection engine capable of reducing an amount of NOx discharged as much as possible, realizing EGR in a large amount, and enlarging a stable burning limit, fuel injection valves for directly injecting fuel into combustion chambers are arranged, ignition plugs are provided in the combustion chambers to face the same, intake ports for generating a tumble gas flow in the combustion chambers are provided. The intake ports are compartmented by partitions into high velocity port portions having a high flow velocity of intake air and low velocity port portions having a low flow velocity of intake air, passage valves for opening and closing the port portions are arranged near upstream ends of the low velocity port portions, and an EGR passage for introducing an EGR gas is connected to the low velocity port portions.Type: GrantFiled: February 23, 2001Date of Patent: April 8, 2003Assignees: Hitachi, Ltd., Hitachi Car Engineering Co., Ltd.Inventors: Yoshiyuki Yoshida, Hidefumi Iwaki, Toshio Hori, Kentarou Shiga, Yoshikuni Kurashima
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Publication number: 20030034192Abstract: The apparatus for controlling vehicle driving force is provided with a target driving force deciding part for deciding a target driving force by using an accelerator opening and vehicle speed, and driving force distribution control part for distributing the target driving force to an engine torque control part and a drive system control part. Further, this apparatus has a vehicle running state determining part for detecting the running state of the vehicle. Furthermore, the final target driving force is increased or decreased to correct based on the result of the vehicle running state determining part in the target driving force deciding part or the driving force distribution control part.Type: ApplicationFiled: September 26, 2002Publication date: February 20, 2003Applicant: Hitachi, LtdInventors: Yoshiya Takano, Yoshiyuki Yoshida, Hidefumi Iwaki
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Publication number: 20020134350Abstract: The apparatus for controlling vehicle driving force is provided with a target driving force deciding part for deciding a target driving force by using an accelerator opening and vehicle speed, and driving force distribution control part for distributing the target driving force to an engine torque control part and a drive system control part. Further, this apparatus has a vehicle running state determining part for detecting the running state of the vehicle. Furthermore, the final target driving force is increased or decreased to correct based on the result of the vehicle running state determining part in the target driving force deciding part or the driving force distribution control part.Type: ApplicationFiled: May 29, 2002Publication date: September 26, 2002Applicant: Hitachi, LtdInventors: Yoshiya Takano, Yoshiyuki Yoshida, Hidefumi Iwaki
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Patent number: 6397817Abstract: Ignition timing changing control is performed in an engine operated under a condition of injecting fuel in the compression stroke. When ignition timing is changed in the engine operated under a condition of injecting fuel in the compression stroke, the fuel injection timing is changed corresponding to engine rotating speed and fuel supply pressure.Type: GrantFiled: September 8, 2000Date of Patent: June 4, 2002Assignee: Hitachi, Ltd.Inventors: Yoshiyuki Yoshida, Toshio Hori
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Publication number: 20020056583Abstract: The apparatus for controlling vehicle driving force is provided with a target driving force deciding part for deciding a target driving force by using an accelerator opening and vehicle speed, and driving force distribution control part for distributing the target driving force to an engine torque control part and a drive system control part. Further, this apparatus has a vehicle running state determining part for detecting the running state of the vehicle. Furthermore, the final target driving force is increased or decreased to correct based on the result of the vehicle running state determining part in the target driving force deciding part or the driving force distribution control part.Type: ApplicationFiled: January 8, 2002Publication date: May 16, 2002Applicant: Hitachi, Ltd.Inventors: Yoshiya Takano, Yoshiyuki Yoshida, Hidefumi Iwaki
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Publication number: 20020011234Abstract: In a direct injection engine capable of reducing an amount of NOx discharged as much as possible, realizing EGR in a large amount, and enlarging a stable burning limit, fuel injection valves for directly injecting fuel into combustion chambers are arranged, ignition plugs are provided in the combustion chambers to face the same, intake ports for generating a tumble gas flow in the combustion chambers are provided. The intake ports are compartmented by partitions into high velocity port portions having a high flow velocity of intake air and low velocity port portions having a low flow velocity of intake air, passage valves for opening and closing the port portions are arranged near upstream ends of the low velocity port portions, and an EGR passage for introducing an EGR gas is connected to the low velocity port portions.Type: ApplicationFiled: February 23, 2001Publication date: January 31, 2002Applicant: Hitachi, LTD. and Hitachi Car Engineering co., LTDInventors: Yoshiyuki Yoshida, Hidefumi Iwaki, Toshio Hori, Kentarou Shiga, Yoshikuni Kurashima
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Patent number: 6319167Abstract: A transmission control system can reduce degradation of engine characteristics upon shifting operation and can reduce a load on the side of a clutch and a transmission due to delay of response. The transmission control system includes an engine generating a driving force, a transmission having a plurality of gear positions for transmitting the driving force developed by the engine to driving wheels, a clutch for connecting said engine and said transmission, engine control means for controlling the engine, transmission control unit for switching gear positions of the transmission, and clutch control unit for controlling disengagement and engagement of the clutch. The transmission control system further includes an electric motor connected to a drive shaft of the engine and capable of performing regenerating operation, and motor control unit for controlling said electric motor for driving the electric motor for generating a driving force or for performing regenerating operation.Type: GrantFiled: March 15, 2000Date of Patent: November 20, 2001Assignee: Hitachi, Ltd.Inventors: Yoshiyuki Yoshida, Toshio Hori
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Patent number: 6272424Abstract: An engine control apparatus including an interpolation control means comprises an interpolation control unit including a desired value calculation part for calculating a desired value of a controlled variable corresponding to each operational state based on related control parameters; a state determination part for determining a change in the operational state of the engine; a interpolation coefficient calculation part for calculating changes of an interpolation coefficient of the controlled variable; and an interpolated desired value calculation part for calculating the interpolated desired value of the controlled variable based on the interpolation coefficient and two desired values of the controlled variable in the first and second operational states; wherein the interpolation control unit controls the controlled variable in switching of the operational state from the first to the second state in the engine.Type: GrantFiled: September 27, 1999Date of Patent: August 7, 2001Assignees: Hitachi, Ltd., Nissan Motor Co., Ltd.Inventors: Yoshiyuki Yoshida, Hidefumi Iwaki, Masahiro Iriyama
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Patent number: 6248040Abstract: In an engine system, an ignition timing is changed in accordance with operation parameters of an engine. The engine system includes an exhaust gas clarifying equipment with a catalyst to clarify the specified components in the exhaust gas, catalyst temperature detecting unit for estimating or detecting the temperature of the catalyst, torque fluctuation detecting unit for detecting the state of fluctuation of an output torque of the engine, and ignition timing calculating unit for calculating the final ignition timing on the basis of the detected results of the torque fluctuation detecting unit and the catalyst temperature detecting unit.Type: GrantFiled: January 27, 1999Date of Patent: June 19, 2001Assignee: Hitachi, Ltd.Inventors: Toshimichi Minowa, Yoshiyuki Yoshida, Tatsuya Ochi, Mineo Kashiwaya, Yoshishige Ohyama
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Patent number: 6240340Abstract: A vehicle which includes a plurality of peripheral systems has a plurality of control units which transmit data to each other via a local area network, and which control the peripheral systems in response to sensor signals received from vehicle operating parameter sensors. A first control unit has a memory which stores a first interface software program which receives input signals from sensors and processes such signals for controlling at least one peripheral system of the vehicle, by means of an application software program and first and second interface software programs. A second control unit has a memory which stores an application software program for processing input signals for controlling at least one other peripheral system of the vehicle via a third interface software program. The second control unit receives input data from the first control unit via the local area network.Type: GrantFiled: November 1, 1999Date of Patent: May 29, 2001Assignee: Hitachi, Ltd.Inventors: Toshimichi Minowa, Yoshiyuki Yoshida, Junichi Ishii, Shigeki Morinaga, Hiroshi Katayama, Mitsuo Kayano, Kenichiro Kurata
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Patent number: 6173226Abstract: A control apparatus and method for a powertrain of a vehicle provided with a drive unit which has the powertrain including an engine or an electric motor and an automatic transmission, and a driving shaft. The control apparatus is provided with first torque estimating means for obtaining a first estimated driving shaft torque, second torque estimating unit for obtaining a second estimated driving shaft torque used to correct said first estimated driving shaft torque, comparison means for comparing said first estimated driving shaft torque with said second estimated driving shaft torque, and driving shaft torque calculating means for calculating a driving shaft torque on the basis of the result of the comparison.Type: GrantFiled: February 23, 1998Date of Patent: January 9, 2001Assignee: Hitachi, Ltd.Inventors: Yoshiyuki Yoshida, Toshimichi Minowa, Hiroshi Kuroiwa, Masahiko Ibamoto, Mitsuhiro Masuda
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Patent number: 6009370Abstract: A vehicle control unit comprises an interface software memory for storing an interface software program for connecting an application software program with an operating system in an internal ROM, a central processing unit for performing computation of the application software program and the interface software program, an erasable memory for storing data such as the result of computation, an I/O unit for extending the control unit, and extending means for communicating memory data through a bus or a LAN. A single-chip micro-computer is used in vehicle control.Type: GrantFiled: May 4, 1998Date of Patent: December 28, 1999Assignee: Hitachi, Ltd.Inventors: Toshimichi Minowa, Yoshiyuki Yoshida, Junichi Ishii, Shigeki Morinaga, Hiroshi Katayama, Mitsuo Kayano, Kenichiro Kurata
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Patent number: 6000378Abstract: A change gear control device is provided for an automatic transmission in a motor vehicle propelled by an internal combustion engine which is operated with an air/fuel mixture having air/fuel ratios ranging from a fuel rich air/fuel ratio to a fuel lean air/fuel ratio depending on driving conditions of the motor vehicle. In this device a first detector detects an engine torque of the internal combustion engine and a second detector detects a vehicle speed of the motor vehicle. A processor processes transmission gear ratios for the automatic transmission.Type: GrantFiled: August 31, 1998Date of Patent: December 14, 1999Assignee: Hitachi, Ltd.Inventors: Toshimichi Minowa, Hiroshi Kimura, Yoshiyuki Yoshida, Yoshishige Ohyama, Yutaka Nishimura