Patents by Inventor Hidenori Nomura
Hidenori Nomura 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: 10591506Abstract: The purpose of the present invention is to provide a rotation speed detection device which achieves improved detection accuracy regardless of a compressor and the operating state of the compressor, and enables the prevention of the breakage of a detection unit. A rotation speed detection device for a compressor, wherein a detection unit for detecting full blades and splitter blades that are blades approaching a compressor casing of the compressor in response to a change in the inductance of a magnetic field is provided. The detection unit is provided in an overlap region in which the full blades and the splitter blades that are all blades can be detected and the exposure pressure is in the range of a gauge pressure of one atmosphere or less.Type: GrantFiled: July 29, 2013Date of Patent: March 17, 2020Assignees: YANMAR CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Takeshi Takahashi, Hidenori Nomura, Mitsuhiro Hibino, Kazuhiro Yamada, Toshiro Itatsu
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Publication number: 20150198624Abstract: The purpose of the present invention is to provide a rotation speed detection device which achieves improved detection accuracy regardless of a compressor and the operating state of the compressor, and enables the prevention of the breakage of a detection unit. A rotation speed detection device for a compressor, wherein a detection unit for detecting full blades and splitter blades that are blades approaching a compressor casing of the compressor in response to a change in the inductance of a magnetic field is provided. The detection unit is provided in an overlap region in which the full blades and the splitter blades that are all blades can be detected and the exposure pressure is in the range of a gauge pressure of one atmosphere or less.Type: ApplicationFiled: July 29, 2013Publication date: July 16, 2015Inventors: Takeshi Takahashi, Hidenori Nomura, Mitsuhiro Hibino, Kazuhiro Yamada, Toshiro Itatsu
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Patent number: 8857176Abstract: An engine provided with a variable parallel supercharging system (9) comprising a first supercharger (10) which is driven by exhaust gas which flows in a first exhaust gas route (41) and which pressurizes intake air which flows in a first intake air route (3) and also comprising a second supercharger (20) which is driven by exhaust gas which flows in a second exhaust gas route (42) and which pressurizes intake air which flows in a second intake air route (4), a supercharging pressure sensor (63) for detecting the pressure of the pressurized intake air, a first supercharger rotation sensor (61) for detecting the rotational speed of the first supercharger (10), a second supercharger rotation sensor (62) for detecting the rotational speed of the second supercharger (20), a first variable actuator (14) for adjusting the capacity of the first supercharger (10), a second variable actuator (24) for adjusting the capacity of the second supercharger (20), and a control device for controlling each of the variable actuaType: GrantFiled: September 17, 2009Date of Patent: October 14, 2014Assignee: Yanmar Co., Ltd.Inventors: Takeshi Takahashi, Hidenori Nomura, Kazuki Maetani, Terumitsu Takahata, Takao Kawabe, Kazuhiro Takenaka
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Patent number: 8646270Abstract: Turbines and compressors, which constitute superchargers, are disposed in series on an exhaust gas passage and an air intake passage, respectively. The supercharger is equipped with a supercharger rotation sensor, which transmits a detection signal obtained according to the rotation of the compressor to a control device, a bypass passage, which bypasses exhaust gas from the upstream side to the downstream side of the turbine, and a bypass valve, which regulates the flow rate of exhaust gas flowing through the bypass passage. Control device regulates the rotational speed of the compressors in a high-efficiency range by producing a control signal based on the detection signal from the supercharger rotation sensor, and sending the control signal to the bypass valve.Type: GrantFiled: June 11, 2009Date of Patent: February 11, 2014Assignee: Yanmar Co., Ltd.Inventors: Takeshi Takahashi, Takao Kawabe, Hidenori Nomura, Tomoo Ogata, Kouji Shimizu, Satomi Ukai
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Patent number: 8544269Abstract: An engine (100) provided with a variable series supercharging system (7) composed of a high-pressure supercharger (10) and a low-pressure supercharger (20), a supercharging pressure sensor (63) for detecting the pressure of intake air pressurized by the variable series supercharging system (7), a high-pressure supercharger rotation sensor (61) for detecting the rotational speed of the high-pressure supercharger (10), a variable actuator (14) for adjusting the capacity of the high-pressure supercharger (10), and a control device (60) capable of controlling the variable actuator (14). The control device (60) controls the variable actuator (14) based on detection signals from the supercharging pressure sensor (63) and the high-pressure supercharger rotation sensor (61).Type: GrantFiled: September 17, 2009Date of Patent: October 1, 2013Assignee: Yanmar Co., Ltd.Inventors: Takeshi Takahashi, Hidenori Nomura, Kazuki Maetani, Terumitsu Takahata, Takao Kawabe, Kazuhiro Takenaka
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Patent number: 8060292Abstract: A cetane number detection device in which an angular velocity detection device (10) for detecting the rotation angular velocity of the crankshaft (11) of an engine (54), and which detects a variation in the value of the amplitude of the angular velocity detected by the angular velocity detection device (10) as a variation in cetane number.Type: GrantFiled: April 19, 2007Date of Patent: November 15, 2011Assignees: Yanmar Co., Ltd., Toyota Jidosha Kabushiki KaishaInventors: Takeshi Takahashi, Terumitsu Takahata, Hidenori Nomura, Gou Asai, Yukihiro Shinohara, Keiji Ooshima, Toshiro Itatsu
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Patent number: 8042516Abstract: In a diesel engine equipped with an injector 1 having a plurality of intersections between an axis line of the injector 1 and the axes of injection holes 10a bored in the injector 1, an air intake valve 25 is controlled so that it is closed at timing before a BDC (at timing when a piston comes to a bottom dead center) by an ECU 50, which controls the timing of closing the air intake valve 25 based on operating conditions of the engine.Type: GrantFiled: June 5, 2007Date of Patent: October 25, 2011Assignees: Yanmar Co., Ltd., Denso CorporationInventors: Takeshi Takahashi, Hidenori Nomura, Terumitsu Takahata, Kouji Shimizu, Takao Kawabe, Gou Asai, Yukihiro Shinohara, Tomoyuki Tsuda
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Publication number: 20110192161Abstract: An engine (100) provided with a variable series supercharging system (7) composed of a high-pressure supercharger (10) and a low-pressure supercharger (20), a supercharging pressure sensor (63) for detecting the pressure of intake air pressurized by the variable series supercharging system (7), a high-pressure supercharger rotation sensor (61) for detecting the rotational speed of the high-pressure supercharger (10), a variable actuator (14) for adjusting the capacity of the high-pressure supercharger (10), and a control device (60) capable of controlling the variable actuator (14). The control device (60) controls the variable actuator (14) based on detection signals from the supercharging pressure sensor (63) and the high-pressure supercharger rotation sensor (61).Type: ApplicationFiled: September 17, 2009Publication date: August 11, 2011Applicant: Yanmar Co., Ltd.Inventors: Takeshi Takahaski, Hidenori Nomura, Kazuki Maetani, Terumitsu Takahata, Takao Kawabe, Kazuhiro Takenaka
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Publication number: 20110192160Abstract: An engine provided with a variable parallel supercharging system (9) comprising a first supercharger (10) which is driven by exhaust gas which flows in a first exhaust gas route (41) and which pressurizes intake air which flows in a first intake air route (3) and also comprising a second supercharger (20) which is driven by exhaust gas which flows in a second exhaust gas route (42) and which pressurizes intake air which flows in a second intake air route (4), a supercharging pressure sensor (63) for detecting the pressure of the pressurized intake air, a first supercharger rotation sensor (61) for detecting the rotational speed of the first supercharger (10), a second supercharger rotation sensor (62) for detecting the rotational speed of the second supercharger (20), a first variable actuator (14) for adjusting the capacity of the first supercharger (10), a second variable actuator (24) for adjusting the capacity of the second supercharger (20), and a control device for controlling each of the variable actuaType: ApplicationFiled: September 17, 2009Publication date: August 11, 2011Applicant: Yanmar Co., Ltd.Inventors: Takeshi Takahashi, Hidenori Nomura, Kazuki Maetani, Terumitsu Takahata, Takao Kawabe, Kazuhiro Takenaka
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Publication number: 20110138806Abstract: Turbines (21b, 31b) and compressors (21a, 31a), which constitute superchargers (21, 31), are disposed in series on an exhaust gas passage (3) and an air intake passage (2), respectively. The supercharger (31) is equipped with a supercharger rotation sensor (61), which transmits a detection signal obtained according to the rotation of the compressor (31a) to a control device, a bypass passage (4), which bypasses exhaust gas from the upstream side to the downstream side of the turbine (31b), and a bypass valve (34), which regulates the flow rate of exhaust gas flowing through the bypass passage (4). Control device (60) regulates the rotational speed of the compressors (21a, 31a) in a high-efficiency range by producing a control signal based on the detection signal from the supercharger rotation sensor (61), and sending the control signal to the bypass valve (34).Type: ApplicationFiled: June 11, 2009Publication date: June 16, 2011Applicant: Yammer Co., Ltd.Inventors: Takeshi Takahashi, Takao Kawabe, Hidenori Nomura, Tomoo Ogata, Kouji Shimizu, Satomi Ukai
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Patent number: 7835851Abstract: There is well known that the more the timing of fuel injection is advanced, the more the start ability of an engine is improved. However, with regard to the conventional fuel injection system, when a stopping process of the engine is performed, a timer piston determining timing of fuel injection remains at a position at which the piston exists at the time that the stopping process is performed. Then, at the time of next starting of the engine, the timer piston does not often exist in the advanced angle side and the start ability may be poor. For solving this problem, an engine control module (ECM) 21 advances a timer piston 52 and stops fuel injection of a fuel injection pump 40 at the time that actual phase difference C reaches stopping target phase difference Z so as to stop an engine 20.Type: GrantFiled: November 10, 2005Date of Patent: November 16, 2010Assignee: Yanmar Co., Ltd.Inventors: Takafumi Teramoto, Takashi Miyamoto, Kazuhiro Yamada, Rio Takahashi, Hidenori Nomura, Yasurou Kimura
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Publication number: 20100030453Abstract: A cetane number detection means in which an angular velocity detection means (10) for detecting the rotation angular velocity of the crankshaft (11) of an engine (54), and which detects a variation in the value of the amplitude of the angular velocity detected by the angular velocity detection means (10) as a variation in cetane number.Type: ApplicationFiled: April 19, 2007Publication date: February 4, 2010Applicants: Yanmar Co., Ltd., Toyota Jidosha Kabushiki kaishaInventors: Takeshi Takahashi, Terumitsu Takahata, Hidenori Nomura, Gou Asao, Yukihiro Shinohara, Keiji Ooshima, Toshiro Itatsu
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Publication number: 20090314264Abstract: In a diesel engine equipped with an injector 1 having a plurality of intersections between an axis line of the injector 1 and the axes of injection holes 10a bored in the injector 1, an air intake valve 25 is controlled so that it is closed at timing before a BDC (at timing when a piston comes to a bottom dead center) by an ECU 50, which controls the timing of closing the air intake valve 25 based on operating conditions of the engine.Type: ApplicationFiled: June 5, 2007Publication date: December 24, 2009Applicants: Yanmar Co., Ltd., Denso CorporationInventors: Takeshi Takahashi, Hidenori Nomura, Terumitsu Takahata, Kouji Shimizu, Takao Kawabe, Gou Asai, Yukihiro Shinohara, Tomoyuki Tsuda
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Publication number: 20080264381Abstract: There is well known that the much timing of fuel injection is advanced, the much start ability of an engine is improved. However, with regard to the conventional fuel injection system, when stopping process of the engine is performed, a timer piston determining timing of fuel injection remains at a position at which the piston exists at the time that the stopping process is performed. Then, at the time of next starting of the engine, the timer piston does not often exist in the advanced angle side and the start ability may be bad. For solving this problem, an ECM 21 advances a timer piston 52 and stops fuel injection of a fuel injection pump 40 at the time that actual phase difference C reaches stopping target phase difference Z so as to stop an engine 20.Type: ApplicationFiled: November 10, 2005Publication date: October 30, 2008Applicant: YANMAR CO., LTD.Inventors: Takafumi Teramoto, Takashi Miyamoto, Kazuhiro Yamada, Rio Takahashi, Hidenori Nomura, Yasurou Kimura
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Patent number: 6607798Abstract: Center cores are formed by extrusion-molding ABS resin. Seven pieces of the center cores, which are juxtaposed to each other in the horizontal direction, are supplied by a pultruder, and reinforcing long-fibers impregnated with an unsaturated polyester resin are allowed to pass through dispersion guides and squeezing nozzles, to thus squeezing-mold a fiber-reinforced composite hollow structure having FRP made legs. A final squeezing nozzle is disposed in a cross head die through a cooling jacket, and the hollow structure thus molded is allowed to pass therethrough to be covered with the ABS resin in a state in which the outer periphery of the hollow structure is heated. The hollow structure thus covered is subjected to cooled-sizing through a plurality of horizontal and vertical pairs of rollers, and then cured in a hot curing tank. The surface covered with the ABS resin is subjected to a surface-treatment of imparting irregularities for giving an antislipping function to the surface.Type: GrantFiled: July 20, 2000Date of Patent: August 19, 2003Inventors: Toru Watanabe, Shigehiro Matsuno, Naoyuki Kondo, Takayuki Hoshino, Hidenori Nomura
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Patent number: 6406283Abstract: A drawing device for handling a wide range of drawable thermoplastic resin materials including a first pressurizing tank and first buffer tank on an upstream side, and a second pressurizing tank and second buffer tank on a downstream side are disposed along a drawing tank having pressurized steam and a discharge unit connected to it. A medium supply and discharge may be connected to each of the first and second pressurizing tanks, and the first and second buffer tanks. Opening members may be disposed on respective upstream and downstream ports along the drawing tank. Small amounts of pressurizing medium may then be allowed to flow into the drawing tank through upstream and downstream ports. Next, material may be supplied from the upstream port into the drawing tank where pressurized steam may be introduced in airtight conditions, and then drawn to the downstream port, thereby producing a drawable thermoplastic resin material.Type: GrantFiled: August 24, 2000Date of Patent: June 18, 2002Assignee: Ube-Nitto Kasei Co., Ltd.Inventors: Hidenori Nomura, Kazuyuki Kawasaki, Shinji Ota, Hirofumi Yashiro, Youichi Fujita
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Patent number: 5909407Abstract: A semiconductor memory device, such as a DRAM, includes a word line multi-selection circuit. A row decoder generates a word line selecting signal for selecting a read-out word line for use in the current cycle to read information from a selected memory cell. The word line selecting signal is also used to select a write-back word line which was used in the previous cycle to read cell information and is used in the current cycle to write back cell information. The word line multi-selection circuit includes a register for temporarily storing the cell information read from the selected memory cell and also for providing, in the current cycle, information read in the previous cycle in order to perform the write-back operation.Type: GrantFiled: February 25, 1998Date of Patent: June 1, 1999Assignee: Fujitsu LimitedInventors: Yasuhiro Yamamoto, Takaaki Furuyama, Hidenori Nomura
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Patent number: 5619465Abstract: A semiconductor memory device is disclosed, which is supplied with power from a power supply and which includes memory cells and a sense amplifier connected to the cells via bit lines. The memory device further includes a circuit for enabling the sense amplifier in response to a supplied enable signal, and for allowing the sense amplifier to rewrite cell data, read on the bit lines, into the memory cell again in self-refresh mode. The enabling circuit incorporates a noise suppression circuit which suppresses rapid changes in an operation current flowing between the power supply and the sense amplifier in order to minimize power supply related noise.Type: GrantFiled: January 11, 1996Date of Patent: April 8, 1997Assignees: Fujitsu Limited, Fujitsu VLSI LimitedInventors: Hidenori Nomura, Kenji Nagai, Masami Nakashima, Hiroshi Yamamoto, Isaya Sobue
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Patent number: 5508965Abstract: A semiconductor memory device is disclosed, which is supplied with power from a power supply and which includes memory cells and a sense amplifier connected to the cells via bit lines. The memory device further includes a circuit for enabling the sense amplifier in response to a supplied enable signal, and for allowing the sense amplifier to rewrite cell data, read on the bit lines, into the memory cell again in self-refresh mode. The enabling circuit incorporates a noise suppression circuit which suppresses rapid changes in an operation current flowing between the power supply and the sense amplifier in order to minimize power supply related noise.Type: GrantFiled: September 14, 1994Date of Patent: April 16, 1996Assignees: Fujitsu Limited, Fujitsu VLSI LimitedInventors: Hidenori Nomura, Kenji Nagai, Masami Nakashima, Hiroshi Yamamoto, Isaya Sobue
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Patent number: D610164Type: GrantFiled: January 2, 2009Date of Patent: February 16, 2010Assignee: Yanmar Co., Ltd.Inventors: Terumitsu Takahata, Hidenori Nomura, Satomi Ukai