Patents by Inventor Hideo Naruse
Hideo Naruse 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: 10367427Abstract: In a resonant inverter device, a main circuit is configured to convert input power supplied from a direct-current (DC) power source into alternating-current (AC) power and supply the AC power to a resonance load as output power, and a controller is configured to control operations of the main circuit. In the controller, a deriver is configured to derive a power loss or circuit efficiency of the main circuit as a conversion loss parameter of the main circuit, and an input power calculator is configured to calculate an increased target output value by increasing the target output value using the conversion loss parameter, as a target value of input power that is input to the main circuit. In the controller, an operation controller is configured to control operations of the main circuit such that the calculated target value of the input power is input to the main circuit.Type: GrantFiled: October 18, 2018Date of Patent: July 30, 2019Assignee: DENSO CORPORATIONInventors: Shoichi Takemoto, Hideo Naruse
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Publication number: 20190123663Abstract: In a resonant inverter device, a main circuit is configured to convert input power supplied from a direct-current (DC) power source into alternating-current (AC) power and supply the AC power to a resonance load as output power, and a controller is configured to control operations of the main circuit. In the controller, a deriver is configured to derive a power loss or circuit efficiency of the main circuit as a conversion loss parameter of the main circuit, and an input power calculator is configured to calculate an increased target output value by increasing the target output value using the conversion loss parameter, as a target value of input power that is input to the main circuit. In the controller, an operation controller is configured to control operations of the main circuit such that the calculated target value of the input power is input to the main circuit.Type: ApplicationFiled: October 18, 2018Publication date: April 25, 2019Inventors: Shoichi TAKEMOTO, Hideo NARUSE
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Publication number: 20180251374Abstract: An ozone supply device includes an ozonizer, a blower and a housing while the housing serves as an intake duct member. The ozonizer includes electrodes that generate ozone through electric discharge. The blower includes a suction inlet, through which air is drawn, and a discharge outlet, through which the air drawn from the suction inlet is discharged. The blower supplies the air discharged from the discharge outlet to the electrodes and blows the ozone generated through the electric discharge to an exhaust passage. The housing forms a suction air passage that guides the air to the suction inlet. At least a portion of the ozonizer is placed in the suction air passage.Type: ApplicationFiled: August 25, 2016Publication date: September 6, 2018Inventors: Hideo NARUSE, Shigeto YAHATA
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Patent number: 9845757Abstract: A controller for a diesel engine has a fuel injector which injects a fuel into a cylinder. The controller has a middle-combustion time computing portion which computes a middle-combustion time period that has elapsed from the fuel is injected until a half of the fuel has combusted, based on a detection value of a cylinder pressure sensor. Further, the controller has a fuel component computing portion which computes a ratio of a carbon quantity relative to a hydrogen quantity contained in the fuel based on the middle-combustion time period.Type: GrantFiled: October 1, 2015Date of Patent: December 19, 2017Assignee: DENSO CORPORATIONInventor: Hideo Naruse
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Patent number: 9708987Abstract: The density of fuel being used by a compression-ignition engine and the flammability of the fuel (readiness to ignite when injected into a combustion chamber of the engine, under the current operating conditions of the engine) are respectively detected. When the flammability is excessively low and the density is above a threshold value, the oxygen concentration of the intake air supplied to the cylinders is increased until the flammability reaches a reference condition, while when the flammability is excessively low and the density is below the threshold value, the compression ratio of the engine (and/or each pilot injection amount) is increased until the flammability reaches the reference condition.Type: GrantFiled: December 9, 2014Date of Patent: July 18, 2017Assignee: DENSO CORPORATIONInventors: Masayuki Suzuki, Hideo Naruse, Jun Kawamura, Koji Ishizuka
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Patent number: 9546614Abstract: A fuel property detection apparatus detects fuel properties based on cetane number and density of a tested fuel. Tested fuel is examined in terms of ignition timing, and, when the tested fuel has an ignition timing earlier than a threshold, the tested fuel is identified as having a standard cetane number. When the tested fuel has an ignition timing later than the threshold, the tested fuel is identified as having a low cetane number. An advance angle of the ignition timing is increased for yielding a greater ignition timing difference between a light property fuel and a heavy property fuel, and, in such manner, the difference therebetween is detected. When an advancement of the ignition timing is greater than a threshold, the fuel property is identified as heavy, and, when an advancement of the ignition timing is smaller than the threshold, the fuel property is identified as light.Type: GrantFiled: February 19, 2015Date of Patent: January 17, 2017Assignee: DENSO CORPORATIONInventors: Hideo Naruse, Makoto Mashida, Koji Ishizuka, Jun Kawamura, Masayuki Suzuki
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Publication number: 20160097339Abstract: A controller for a diesel engine has a fuel injector which injects a fuel into a cylinder. The controller has a middle-combustion time computing portion which computes a middle-combustion time period that has elapsed from the fuel is injected until a half of the fuel has combusted, based on a detection value of a cylinder pressure sensor. Further, the controller has a fuel component computing portion which computes a ratio of a carbon quantity relative to a hydrogen quantity contained in the fuel based on the middle-combustion time period.Type: ApplicationFiled: October 1, 2015Publication date: April 7, 2016Inventor: Hideo NARUSE
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Publication number: 20150252745Abstract: A fuel property detection apparatus detects fuel properties based on cetane number and density of a tested fuel. Tested fuel is examined in terms of ignition timing, and, when the tested fuel has an ignition timing earlier than a threshold, the tested fuel is identified as having a standard cetane number. When the tested fuel has an ignition timing later than the threshold, the tested fuel is identified as having a low cetane number. An advance angle of the ignition timing is increased for yielding a greater ignition timing difference between a light property fuel and a heavy property fuel, and, in such manner, the difference therebetween is detected. When an advancement of the ignition timing is greater than a threshold, the fuel property is identified as heavy, and, when an advancement of the ignition timing is smaller than the threshold, the fuel property is identified as light.Type: ApplicationFiled: February 19, 2015Publication date: September 10, 2015Inventors: Hideo NARUSE, Makoto MASHIDA, Koji ISHIZUKA, Jun KAWAMURA, Masayuki SUZUKI
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Publication number: 20150159565Abstract: The density of fuel being used by a compression-ignition engine and the flammability of the fuel (readiness to ignite when injected into a combustion chamber of the engine, under the current operating conditions of the engine) are respectively detected. When the flammability is excessively low and the density is above a threshold value, the oxygen concentration of the intake air supplied to the cylinders is increased until the flammability reaches a reference condition, while when the flammability is excessively low and the density is below the threshold value, the compression ratio of the engine (and/or each pilot injection amount) is increased until the flammability reaches the reference condition.Type: ApplicationFiled: December 9, 2014Publication date: June 11, 2015Inventors: Masayuki SUZUKI, Hideo NARUSE, Jun KAWAMURA, Koji ISHIZUKA
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Patent number: 8402949Abstract: A fuel injector for an internal combustion engine is provided. The fuel injector is equipped with a fuel pressure sensor which is installed in a metallic injector body. The fuel injector also includes an amplifier working to amplify an output of the fuel pressure sensor and a thermal insulating member disposed between the metallic injector body and the amplifier to shield the amplifier thermally, thereby ensuring the accuracy in measuring the pressure of fuel within the fuel injector.Type: GrantFiled: November 6, 2008Date of Patent: March 26, 2013Assignees: Denso Corporation, Nippon Soken, Inc.Inventors: Jun Kondo, Tooru Taguchi, Hideo Naruse, Fumiaki Arikawa
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Fuel pressure sensor/sensor mount assembly, fuel injection apparatus, and pressure sensing apparatus
Patent number: 7963155Abstract: A fuel pressure sensor/sensor mount assembly in which a fuel pressure sensor is so mounted as to exposed to a high-pressure fuel path through which fuel is supplied to a fuel injector, a fuel injection apparatus equipped with a built-in fuel pressure sensor, and a pressure sensing apparatus working to measure the pressure of fuel in a fuel injector are provided. The fuel pressure sensor/sensor mount assembly is disposed between the high-pressure fuel path and the fuel injector, thus permitting the size of the fuel injector to be minimized without sacrificing the accuracy in measuring the pressure of the fuel. The fuel injection apparatus and the a pressure sensing apparatus are designed to ensure desired accuracy in measuring the pressure of the fuel.Type: GrantFiled: March 27, 2009Date of Patent: June 21, 2011Assignee: Denso CorporationInventors: Jun Kondo, Tooru Taguchi, Hideo Naruse, Akitoshi Yamanaka -
Patent number: 7706956Abstract: An apparatus is provided for driving an injector injecting fuel into an internal combustion engine. The injector is provided with a piezoelectric element to be charged and discharged. The apparatus comprises a calculator and a charger. The calculator calculates a command value to charge the piezoelectric element. The calculator includes correcting means that corrects the command value based on information indicating either an operation of the piezoelectric element or an electric characteristic of the apparatus. The charger charges the piezoelectric element in response to the corrected command value to accumulate a desired amount of electric energy at the piezoelectric element.Type: GrantFiled: September 27, 2007Date of Patent: April 27, 2010Assignee: DENSO CorporationInventors: Noboru Nagase, Hideo Naruse, Takashi Kikutani
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FUEL PRESSURE SENSOR/SENSOR MOUNT ASSEMBLY, FUEL INJECTION APPARATUS, AND PRESSURE SENSING APPARATUS
Publication number: 20090241650Abstract: A fuel pressure sensor/sensor mount assembly in which a fuel pressure sensor is so mounted as to exposed to a high-pressure fuel path through which fuel is supplied to a fuel injector, a fuel injection apparatus equipped with a built-in fuel pressure sensor, and a pressure sensing apparatus working to measure the pressure of fuel in a fuel injector are provided. The fuel pressure sensor/sensor mount assembly is disposed between the high-pressure fuel path and the fuel injector, thus permitting the size of the fuel injector to be minimized without sacrificing the accuracy in measuring the pressure of the fuel. The fuel injection apparatus and the a pressure sensing apparatus are designed to ensure desired accuracy in measuring the pressure of the fuel.Type: ApplicationFiled: March 27, 2009Publication date: October 1, 2009Applicant: DENSO CORPORATIONInventors: Jun Kondo, Tooru Taguchi, Hideo Naruse, Akitoshi Yamanaka -
Publication number: 20090118981Abstract: A fuel injector for an internal combustion engine is provided. The fuel injector is equipped with a fuel pressure sensor which is installed in a metallic injector body. The fuel injector also includes an amplifier working to amplify an output of the fuel pressure sensor and a thermal insulating member disposed between the metallic injector body and the amplifier to shield the amplifier thermally, thereby ensuring the accuracy in measuring the pressure of fuel within the fuel injector.Type: ApplicationFiled: November 6, 2008Publication date: May 7, 2009Applicants: DENSO CORPORATION, NIPPON SOKEN, INC.Inventors: Jun KONDO, Tooru Taguchi, Hideo Naruse, Fumiaki Arikawa
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Patent number: 7474035Abstract: In a driving device for a piezoelectric actuator, when a driving signal is input, a charging switch is repetitively turned on/off to charge and expand the piezoelectric actuator under the state that a discharging switch is turned off. Thereafter, when the input of the driving signal is stopped, the discharging switch is repetitively turned on/off under the state that the charging switch is turned off, thereby discharging and contracting the piezoelectric actuator. Particularly, during the charging period, the charging switch is turned on at a fixed period, and the charging switch is turned off when an integration value of current flowing in a charging circuit at the ON-time of the charging switch reaches a target charge amount.Type: GrantFiled: June 7, 2007Date of Patent: January 6, 2009Assignees: Denso Corporation, Nippon Soken, Inc.Inventors: Yasuhiro Fukagawa, Tsutomu Nakamura, Takamichi Kamiya, Noboru Nagase, Hideo Naruse
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Publication number: 20080072879Abstract: An apparatus is provided for driving an injector injecting fuel into an internal combustion engine. The injector is provided with a piezoelectric element to be charged and discharged. The apparatus comprises a calculator and a charger. The calculator calculates a command value to charge the piezoelectric element. The calculator includes correcting means that corrects the command value based on information indicating either an operation of the piezoelectric element or an electric characteristic of the apparatus. The charger charges the piezoelectric element in response to the corrected command value to accumulate a desired amount of electric energy at the piezoelectric element.Type: ApplicationFiled: September 27, 2007Publication date: March 27, 2008Applicant: DENSO CORPORATIONInventors: Noboru Nagase, Hideo Naruse, Takashi Kikutani
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Publication number: 20070296307Abstract: In a driving device for a piezoelectric actuator, when a driving signal is input, a charging switch is repetitively turned on/off to charge and expand the piezoelectric actuator under the state that a discharging switch is turned off. Thereafter, when the input of the driving signal is stopped, the discharging switch is repetitively turned on/off under the state that the charging switch is turned off, thereby discharging and contracting the piezoelectric actuator. Particularly, during the charging period, the charging switch is turned on at a fixed period, and the charging switch is turned off when an integration value of current flowing in a charging circuit at the ON-time of the charging switch reaches a target charge amount.Type: ApplicationFiled: June 7, 2007Publication date: December 27, 2007Applicants: Denso Corporation, Nippon Soken, Inc.Inventors: Yasuhiro Fukagawa, Tsutomu Nakamura, Takamichi Kamiya, Noboru Nagase, Hideo Naruse