Patents by Inventor Junichi Yamaguchi
Junichi Yamaguchi 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: 6745743Abstract: A control apparatus for a direct injection engine having an intake valve, an exhaust valve and a fuel injection valve for injecting fuel directly into a cylinder of the engine and in which fuel injection by the fuel injection valve is performed during intake stroke or during compression stroke of the engine, has combustion stabilizing device for stabilizing combustion in the cylinder. The combustion stabilizing device has next operation mode determination device for selecting either an operation mode of recovering the combustion stability by fuel injection during intake stroke or an operation mode of recovering the combustion stability by fuel injection during compression stroke when a deteriorated state of combustion is detected in fuel injection during compression stroke.Type: GrantFiled: September 18, 2002Date of Patent: June 8, 2004Assignee: Hitachi, Ltd.Inventors: Matsuharu Abo, Koji Onishi, Hiroshi Fujii, Mamoru Fujieda, Junichi Yamaguchi, Yoshiyuki Tanabe
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Publication number: 20040069562Abstract: An exhaust pipe structure has, under a floor of a vehicle, an exhaust passage for exhaust gas discharged from a vehicle-installed engine, and at least one muffler is provided on an intermediate portion of the exhaust passage. The at least one muffler includes a main muffler having the greatest muffler capacity. An external cylinder forming an outer shell portion of the main muffler has a circular sectional shape having a diameter of 100 mm to 150 mm, or a sectional shape that is substantially equal to an area of the circular sectional shape. The external cylinder has a length of 800 mm to 12000 mm. The main muffler is disposed in a tunnel portion that is formed between the front wheels and the rear wheels.Type: ApplicationFiled: October 9, 2003Publication date: April 15, 2004Inventors: Tadashi Kondo, Junichi Yamaguchi, Katsuro Arimura
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Publication number: 20040060531Abstract: The object of this invention is that a suction device for an internal combustion engine is to be compact. The suction device comprising a casing having an air inlet and a plurality of outlets, a filter in the casing for filtering air from said air inlet, a collection chamber in the casing for receiving air from the filter, at least one throttle valve in the casing for controlling the flow of air from said filter to said collection chamber, and a plurality of suction pipes. According to the present invention, the suction device can be made compact to thereby effectively use an engine room of an automobile.Type: ApplicationFiled: September 30, 2003Publication date: April 1, 2004Inventors: Minoru Ohsuga, Junichi Yamaguchi, Nobuo Kurihara, Yasushi Sasaki
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Patent number: 6701881Abstract: The object of this invention is that a suction device for an internal combustion engine is to be compact. The suction device comprising a casing having an air inlet and a plurality of outlets, a filter in the casing for filtering air from said air inlet, a collection chamber in the casing for receiving air from the filter, at least one throttle valve in the casing for controlling the flow of air from said filter to said collection chamber, and a plurality of suction pipes. According to the present invention, the suction device can be made compact to thereby effectively use an engine room of an automobile.Type: GrantFiled: January 7, 2003Date of Patent: March 9, 2004Assignee: Hitachi, Ltd.Inventors: Minoru Ohsuga, Junichi Yamaguchi, Nobuo Kurihara, Yasushi Sasaki
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Publication number: 20040035392Abstract: A one-piece suction device is provided for an internal combustion engine including a collector into which air flows through an electronically controlled throttle valve driven by an electric motor and individual suction pipes for distributing the air to respective cylinders of the internal combustion engine from the collector. A first bent-form air flow passage is formed which extend from an air intake inlet port of the suction device to an inlet port of the throttle valve and from an outlet port of the throttle valve to the collector. A second bent-form air flow passage is formed between an inlet port of the collector and an outlet port of one of the individual suction pipes. The air flow amount flowing through said first and second bent-form air flow passages is adjusted by said electronically controlled throttle valve.Type: ApplicationFiled: May 16, 2003Publication date: February 26, 2004Inventors: Minoru Ohsuga, Junichi Yamaguchi, Nobuo Kurihara, Yasushi Sasaki
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Publication number: 20030173926Abstract: A humanoid robot including upper limbs, lower limbs, and a trunk. Hip joints which connect the lower limbs and the trunk each possess degrees of freedom provided in correspondence with a hip joint yaw axis, a hip joint roll axis, and a hip joint pitch axis. The humanoid robot is a leg-movement-type robot which walks on two feet. By arbitrarily offsetting the hip joint yaw axes in a roll axis direction, the effects of the movement of the center of gravity occurring when the mode of use of the robot is changed are accommodated to in order to flexibly balance the weights of the upper and lower limbs. The waist is made more compact in order to form a humanoid robot which is well proportioned and which makes it possible to prevent interference between the left and right feet when the direction of a foot is changed. Accordingly, a robot which moves naturally and in a way sufficiently indicative of emotions and feelings using fewer degrees of freedom is provided.Type: ApplicationFiled: April 15, 2003Publication date: September 18, 2003Applicant: SONY CORPORATIONInventors: Yuichi Hattori, Yoshihiro Kuroki, Tatsuzo Ishida, Junichi Yamaguchi
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Publication number: 20030121495Abstract: A control apparatus for a direct injection engine having an intake valve, an exhaust valve and a fuel injection valve for injecting fuel directly into a cylinder of the engine and in which fuel injection by the fuel injection valve is performed during intake stroke or during compression stroke of the engine, has combustion stabilizing device for stabilizing combustion in the cylinder. The combustion stabilizing device has next operation mode determination device for selecting either an operation mode of recovering the combustion stability by fuel injection during intake stroke or an operation mode of recovering the combustion stability by fuel injection during compression stroke when a deteriorated state of combustion is detected in fuel injection during compression stroke.Type: ApplicationFiled: September 18, 2002Publication date: July 3, 2003Inventors: Matsuharu Abo, Koji Onishi, Hiroshi Fujii, Mamoru Fujieda, Junichi Yamaguchi, Yoshiyuki Tanabe
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Publication number: 20030098004Abstract: The object of this invention is that a suction device for an internal combustion engine is to be compact. The suction device comprising a casing having an air inlet and a plurality of outlets, a filter in the casing for filtering air from said air inlet, a collection chamber in the casing for receiving air from the filter, at least one throttle valve in the casing for controlling the flow of air from said filter to said collection chamber, and a plurality of suction pipes. According to the present invention, the suction device can be made compact to thereby effectively use an engine room of an automobile.Type: ApplicationFiled: January 7, 2003Publication date: May 29, 2003Inventors: Minoru Ohsuga, Junichi Yamaguchi, Nobuo Kurihara, Yasushi Sasaki
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Patent number: 6523517Abstract: The object of this invention is that a suction device for an internal combustion engine is to be compact. The suction device comprising a casing having an air inlet and a plurality of outlets, a filter in the casing for filtering air from said air inlet, a collection chamber in the casing for receiving air from the filter, at least one throttle valve in the casing for controlling the flow of air from said filter to said collection chamber, and a plurality of suction pipes. According to the present invention, the suction device can be made compact to thereby effectively use an engine room of an automobile.Type: GrantFiled: April 28, 1999Date of Patent: February 25, 2003Assignee: Hitachi, LtdInventors: Minoru Ohsuga, Junichi Yamaguchi, Nobuo Kurihara, Yasushi Sasaki
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Patent number: 6443124Abstract: A control device in an internal combustion engine interlocking with a device to generate swirls in a combustion chamber of the internal combustion engine by providing bypass passages which allow air to bypass a throttle valve for regulating intake air flow rate of the internal combustion engine to control an output power of the internal combustion engine and allow the air to flow in from the atmosphere side to communicate with air intake ports for respective cylinders on the downstream side of the throttle valve.Type: GrantFiled: June 29, 2001Date of Patent: September 3, 2002Assignee: Hitachi, Ltd.Inventors: Junichi Yamaguchi, Minoru Ohsuga, Ryoichi Komuro
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Publication number: 20020053331Abstract: The object of this invention is that a suction device for an internal combustion engine is to be compact. The suction device comprising a casing having an air inlet and a plurality of outlets, a filter in the casing for filtering air from said air inlet, a collection chamber in the casing for receiving air from the filter, at least one throttle valve in the casing for controlling the flow of air from said filter to said collection chamber, and a plurality of suction pipes. According to the present invention, the suction device can be made compact to thereby effectively use an engine room of an automobile.Type: ApplicationFiled: April 28, 1999Publication date: May 9, 2002Inventors: MINORU OHSUGA, JUNICHI YAMAGUCHI, NOBUO KURIHARA, YASUSHI SASAKI
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Publication number: 20010035154Abstract: A control device in an internal combustion engine, interlocking with a device to generate swirls in a combustion chamber of the internal combustion engine by providing bypass passages which allow air to bypass a throttle valve for regulating Intake air flow rate of the internal combustion engine to control an output power of the internal combustion engine and allow the air to flow in from the side of atmosphere to communicate with air intake ports for respective cylinders on the downstream side of the throttle valve The device comprises sensors to detect a vehicle speed, a gear position, an opening of an accelerator, an intake air flow rate and the like and a processor to determine an operating state of the internal combustion engine such as a rotating speed, a torque and the like based on the signals from the sensors, calculating an operating condition of the internal combustion engine according to the strength of swirl to be generated based on the operating state, outputting the calculated values as controlType: ApplicationFiled: June 29, 2001Publication date: November 1, 2001Applicant: Hitachi, Ltd.Inventors: Junichi Yamaguchi, Minoru Ohsuga, Ryoichi Komuro
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Patent number: 6285778Abstract: The vehicle surroundings monitor detects the sizes and positions of obstacles, ditches and humans as well as the depths of the ditches to provide the driver with sufficient information to secure safety during driving. The pattern light projector receives an incoming laser beam and projects a light spot matrix in the form of a regular grating onto the monitored area. The camera photographs the light spot pattern on the monitored area and sends image signals to the data processor which processes the image signals to detect the presence of any obstacle, ditch or human. Based on the steering angle detected by the steering angle sensor, the path the car will take is predicted and a possible contact or collision of the car with the obstacle is detected beforehand. The buzzer, voice synthesizer and display device are used to alert the driver and indicate the presence of the obstacles, the possible contact with them and the location where the possible contact will occur.Type: GrantFiled: June 6, 1995Date of Patent: September 4, 2001Assignee: Yazaki CorporationInventors: Masato Nakajima, Junichi Yamaguchi, Hiroya Akita, Yoshihiro Tsuji, Kazuyuki Sasaki, Naoto Ishikawa
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Patent number: 6032634Abstract: The present invention provides a compact air induction system for an internal-combustion engine in which an air inlet section, a collection section and the intake port section for a plurality of cylinders of the internal-combustion engine are formed adjacent to each other and connected directly or through a partition wall. A control unit for controlling the engine is mounted in the passage at the downstream of the air inlet section.Type: GrantFiled: November 7, 1997Date of Patent: March 7, 2000Assignee: Hitachi, Ltd.Inventors: Teruhiko Minegishi, Minoru Oosuga, Junichi Yamaguchi, Yasushi Sasaki, Hiroyuki Nemoto, Yuzo Kadomukai, Ryuhei Kawabe
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Patent number: 5960759Abstract: The object of this invention is that a suction devise for an internal combustion engine is to be compact.The suction devise comprising a casing having an air inlet and a plurality of outlets, a filter in the casing for filtering air from said air inlet, a collection chamber in the casing for receiving air from the filter, at least one throttle valve in the casing for controlling the flow of air from said filter to said collection chamber, and a plurality of suction pipes.According to the present invention, the suction device can be made compact to thereby effectively use an engine room of an automobile.Type: GrantFiled: September 18, 1996Date of Patent: October 5, 1999Assignee: Hitachi, Ltd.Inventors: Minoru Ohsuga, Junichi Yamaguchi, Nobuo Kurihara, Yasushi Sasaki
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Patent number: 5765524Abstract: An air intake system for an internal combustion engine uniformly distributes the fuel-air mixture in the cylinder, and concentrates the mixture in the vicinity of an ignition plug in the cylinder by selecting the direction of supply of sprayed fuel, thereby improving ignitability of the mixture at the time of lean-burn operation. The system produces tumble flow in the cylinder for accelerating combustion and provides lean-burn operation, thereby suppressing consumption of the fuel and reducing the amount of exhaust gas.The fuel is injected by a fuel injection valve and collides with an intake valve, before being atomized. The atomized fuel flows into the cylinder from the side of the intake valve closer to the fuel injection valve. On the other hand, high-velocity air flow from bypass passages enters the cylinder from the side of the intake valve closer to the ignition plug, so as to produce tumble flow in the cylinder.Type: GrantFiled: May 29, 1997Date of Patent: June 16, 1998Assignee: Hitachi, Ltd.Inventors: Minoru Ohsuga, Takuya Shiraishi, Junichi Yamaguchi, Ryoichi Komuro, Masakichi Momono
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Patent number: 5704326Abstract: The present invention provides a compact air induction system for an internal-combustion engine in which an air inlet section, a collection section and the intake port section for a plurality of cylinders of the internal-combustion engine are formed adjacent to each other and connected directly or through a partition wall. A control unit for controlling the engine is mounted in the passage at the downstream of the air inlet section.Type: GrantFiled: October 11, 1996Date of Patent: January 6, 1998Assignee: Hitachi, Ltd.Inventors: Teruhiko Minegishi, Minoru Oosuga, Junichi Yamaguchi, Yasushi Sasaki, Hiroyuki Nemoto, Yuzo Kadomukai, Ryuhei Kawabe
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Patent number: 5671713Abstract: A control device in an internal combustion engine, interlocking with a device to generate swirls in a combustion chamber of the internal combustion engine by providing bypass passages which allow air to bypass a throttle valve for regulating intake air flow rate of the internal combustion engine to control an output power of the internal combustion engine and allow the air to flow in from the side of atmosphere to communicate with air intake ports for respective cylinders on the downstream side of the throttle valve.Type: GrantFiled: May 21, 1996Date of Patent: September 30, 1997Assignee: Hitachi, Ltd.Inventors: Junichi Yamaguchi, Minoru Ohsuga, Ryoichi Komuro
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Patent number: 5645029Abstract: An air intake system for an internal combustion engine uniformly distributes the fuel-air mixture in the cylinder, and concentrates the mixture in the vicinity of an ignition plug in the cylinder by selecting the direction of supply of sprayed fuel, thereby improving ignitability of the mixture at the time of lean-burn operation. The system produces tumble flow in the cylinder for accelerating combustion and provides lean-burn operation, thereby suppressing consumption of the fuel and reducing the amount of exhaust gas. The fuel is injected by a fuel injection valve and collides with an intake valve, before being atomized. The atomized fuel flows into the cylinder from the side of the intake valve closer to the fuel injection valve. On the other hand, high-velocity air flow from bypass passages enters the cylinder from the side of the intake valve closer to the ignition plug, so as to produce tumble flow in the cylinder.Type: GrantFiled: July 3, 1996Date of Patent: July 8, 1997Assignee: Hitachi, Ltd.Inventors: Minoru Ohsuga, Takuya Shiraishi, Junichi Yamaguchi, Ryoichi Komuro, Masakichi Momono
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Patent number: D391899Type: GrantFiled: September 27, 1996Date of Patent: March 10, 1998Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Shinri Chibuka, Yoji Hayashi, Toshihiro Ono, Junichi Yamaguchi, Kenji Kawasaki