Patents by Inventor Noboru Nagase
Noboru Nagase 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: 12160144Abstract: An electronic device includes: a wiring board; an electric connection wiring connected to a power supply; motor connection wirings arranged on a peripheral side of the wiring board and connected to the electric motor; and semiconductor modules having semiconductor elements and a resin mold. The semiconductor modules are arranged at a position on the electric connection wiring or on the peripheral side of the electric connection wiring and on a center side of the motor connection wiring. At least a part of electrodes of the plurality of semiconductor modules is mounted on the electric connection wiring.Type: GrantFiled: April 20, 2022Date of Patent: December 3, 2024Assignee: DENSO CORPORATIONInventors: Syuhei Miyachi, Atsushi Saitou, Toshihiro Fujita, Noboru Nagase
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Patent number: 12033922Abstract: A semiconductor device includes: first and second semiconductor elements each having two electrodes respectively disposed on two surfaces; two first terminals respectively connected to the two electrodes of the first semiconductor element and arranged side by side in one direction; two second terminals respectively connected to the two electrodes of the second semiconductor element, and arranged side by side in the one direction to be adjacent to the two first terminals; and a sealing resin portion covering the first and second semiconductor elements and the first and second terminals in a state where facing surfaces of the first and second terminals are exposed from the sealing resin portion. The facing surfaces of the two first terminals have different area ratios, the facing surfaces of the two second terminals have different area ratios, and one of the first terminals is arranged adjacent to both the two second terminals.Type: GrantFiled: December 21, 2021Date of Patent: July 9, 2024Assignee: DENSO CORPORATIONInventors: Akihiro Fukatsu, Noboru Nagase, Toshihiro Nagaya
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Patent number: 10961963Abstract: An injection control device controls a drive of a solenoid in a high pressure pump for pressurizing fuel to an internal combustion engine. The injection control device includes a transistor on an upstream side of a power supply path from a direct current power supply line to the solenoid and a transistor provided on a downstream side of the power supply path. The injection control device further includes a diode at a position between an upstream terminal of the solenoid and ground, a transistor arranged in parallel with the diode, and a drive controller. The drive controller drives the solenoid to an open position by switching ON the transistors on the upstream and downstream sides of the power supply path.Type: GrantFiled: April 12, 2019Date of Patent: March 30, 2021Assignee: DENSO CORPORATIONInventors: Masashi Inaba, Noboru Nagase, Taichi Watanabe
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Patent number: 10957474Abstract: An injection control device controls a solenoid in a fuel injection valve. The injection control device includes a transistor on an upstream side of a first power supply path to the solenoid, and a transistor on an upstream side of a second power supply path to the solenoid. The injection control device has another transistor with a body diode arranged in parallel at a position between an upstream terminal of the solenoid and ground. The injection control device also includes a transistor on the downstream side of the first and second power supply paths. A drive controller in the injection control device drives the solenoid to an open position by switching ON the transistor on the downstream side and one of the transistors on the upstream side power supply paths.Type: GrantFiled: April 12, 2019Date of Patent: March 23, 2021Assignee: DENSO CORPORATIONInventors: Masashi Inaba, Noboru Nagase, Taichi Watanabe
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Patent number: 10837392Abstract: An injection control device controls a solenoid in a fuel injection valve. The injection control device includes a transistor on an upstream side of a first power supply path to the solenoid and a transistor on an upstream side of a second power supply path to the solenoid. The injection control device has another transistor with a body diode arranged in parallel at a position on the first power supply path between the first transistor and an upstream terminal of the solenoid. The injection control device also includes a transistor on the downstream side of the first and second power supply paths. A drive controller in the injection control device drives the solenoid to an open position by switching ON the transistor on the downstream side and the transistor on the upstream side of the first power supply path or the transistor on the upstream side of the second power supply path.Type: GrantFiled: April 12, 2019Date of Patent: November 17, 2020Assignee: DENSO CORPORATIONInventors: Masashi Inaba, Noboru Nagase, Taichi Watanabe
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Patent number: 9821651Abstract: A fuel tank lid includes a lid part and a terminal. The lid part includes an inserted part inserted into an opening of a fuel tank, and a storage part storing a drive circuit. The terminal has a central portion covered by the inserted part and the storage part, a first end connected to a pump, and a second end connected to the drive circuit. The storage part includes a side wall that has a first opening and a second opening, an upper closure part that closes the first opening, and a lower closure part that closes the second opening. The fuel tank lid further includes a discharge structure positioned vertically lower than the upper closure part and discharging a fuel vapor that has travelled along an interface between the terminal and the lid part and entered a hollow space of the storage part, to an external atmosphere.Type: GrantFiled: March 26, 2015Date of Patent: November 21, 2017Assignee: DENSO CORPORATIONInventors: Tatsuya Kakehi, Noboru Nagase, Kiyoshi Nagata, Akihiro Konno
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Patent number: 8149559Abstract: A driving device for a piezoelectric actuator supplies charges and discharges the piezoelectric actuator through a charging switch and a discharging switch, respectively. The charging switch is repeatedly turned on and off thereby to charge and expand the piezoelectric actuator. The discharging switch is repeatedly turned on and off thereby to discharge and contract the piezoelectric actuator. The discharging switch is kept ON especially during a period from when the discharging switching control is terminated to when the charging switching control is started next. Thus, the piezoelectric voltage at the start of the next driving can be made substantially 0V.Type: GrantFiled: June 16, 2008Date of Patent: April 3, 2012Assignee: Denso CorporationInventors: Tatsuya Kakehi, Noboru Nagase
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Patent number: 7819337Abstract: The piezo injector includes a piezo element expanding when electrical charges supplied from an external DC source are accumulated therein, and contracting when the electrical charges are discharged therefrom, an open/close valve opening and closing in accordance with expansion and contraction of the piezo element, a housing containing therein the piezo element and the open/close valve, and an inductor element through which the electrical charges are accumulated in and discharged from the piezo element.Type: GrantFiled: June 28, 2007Date of Patent: October 26, 2010Assignee: DENSO CORPORATIONInventor: Noboru Nagase
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Patent number: 7812503Abstract: A fuel injection control apparatus drives piezoelectric actuators for opening and closing injectors of respective cylinders based on energy stored in a capacitor of a DC/DC converter. A current detecting resistor for controlling a boost switch to charge the capacitor is disposed at a position at which current flowing through the capacitor is not detected. Further, current detecting resistors for controlling the piezoelectric actuators are disposed at positions at which charging current from a diode to the capacitor is not detected. Thus, the charging of the capacitor can be performed even during the control for charging/discharging the piezoelectric actuator.Type: GrantFiled: August 19, 2008Date of Patent: October 12, 2010Assignee: Denso CorporationInventors: Tatsuya Kakehi, Noboru Nagase
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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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Patent number: 7626315Abstract: A piezo-injector driving apparatus overcomes disadvantages occurring at the start and the end of charging or discharging of a piezoelectric element while maintaining high responsiveness. At the start and the end of charging a piezoelectric element, the absolute value of a change rate of electrical energy of the piezoelectric element is set lower than in a period between them. Therefore, the pattern of electrical energy of the piezoelectric element is in the shape of the letter S. This prevents an excess of energy supplied to the piezoelectric element at the start of charging and energy supplied to the piezoelectric element at the end of charging.Type: GrantFiled: May 22, 2006Date of Patent: December 1, 2009Assignee: Denso CorporationInventor: Noboru Nagase
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Patent number: 7546830Abstract: An injector drive device includes a power supply unit that is supplied with power from a battery mounted in a vehicle and generates a voltage higher than the voltage of the battery, and EDU having a drive unit that is supplied with power from the power supply unit and drives an injector. The drive unit is housed in a housing. The power supply unit is placed externally to the EDU, that is, externally to the housing, so that the housing need not be made large against heat generation of the power supply unit.Type: GrantFiled: May 31, 2007Date of Patent: June 16, 2009Assignee: DENSO CORPORATIONInventors: Noboru Nagase, Takashi Kikutani
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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: 20080316671Abstract: A driving device for a piezoelectric actuator supplies charges and discharges the piezoelectric actuator through a charging switch and a discharging switch, respectively. The charging switch is repeatedly turned on and off thereby to charge and expand the piezoelectric actuator. The discharging switch is repeatedly turned on and off thereby to discharge and contract the piezoelectric actuator. The discharging switch is kept ON especially during a period from when the discharging switching control is terminated to when the charging switching control is started next. Thus, the piezoelectric voltage at the start of the next driving can be made substantially 0V.Type: ApplicationFiled: June 16, 2008Publication date: December 25, 2008Applicant: DENSO CORPORATIONInventors: Tatsuya Kakehi, Noboru Nagase
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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: 20080006724Abstract: The piezo injector includes a piezo element expanding when electrical charges supplied from an external DC source are accumulated therein, and contracting when the electrical charges are discharged therefrom, an open/close valve opening and closing in accordance with expansion and contraction of the piezo element, a housing containing therein the piezo element and the open/close valve, and an inductor element through which the electrical charges are accumulated in and discharged from the piezo element.Type: ApplicationFiled: June 28, 2007Publication date: January 10, 2008Applicant: DENSO CORPORATIONInventor: Noboru Nagase
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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
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Publication number: 20070289579Abstract: An injector drive device includes a power supply unit that is supplied with power from a battery mounted in a vehicle and generates a voltage higher than the voltage of the battery, and EDU having a drive unit that is supplied with power from the power supply unit and drives an injector. The drive unit is housed in a housing. The power supply unit is placed externally to the EDU, that is, externally to the housing, so that the housing need not be made large against heat generation of the power supply unit.Type: ApplicationFiled: May 31, 2007Publication date: December 20, 2007Applicant: DENSO CORPORATIONInventors: Noboru Nagase, Takashi Kikutani
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Publication number: 20060279592Abstract: A piezo-injector driving apparatus overcomes disadvantages occurring at the start and the end of charging or discharging of a piezoelectric element while maintaining high responsiveness. At the start and the end of charging a piezoelectric element, the absolute value of a change rate of electrical energy of the piezoelectric element is set lower than in a period between them. Therefore, the pattern of electrical energy of the piezoelectric element is in the shape of the letter S. This prevents an excess of energy supplied to the piezoelectric element at the start of charging and energy supplied to the piezoelectric element at the end of charging.Type: ApplicationFiled: May 22, 2006Publication date: December 14, 2006Applicant: DENSO CORPORATIONInventor: Noboru Nagase
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Patent number: 6675784Abstract: In an engine ignition system having a fail-safe function, a battery, a coil and a transistor are connected in series. A capacitor is connected to the coil by way of a diode. The capacitor, a primary winding of an ignition coil and a transistor are connected in series. A transistor and a diode in serial connection are connected in parallel to the coil and diode in serial connection. A drive circuit turns on and off the transistor to charge the capacitor and operates the transistor to implement the ignition operation. The drive circuit, in the event of system failure, turns on and off the transistor, while retaining the transistor in the on state, thereby to feed energy of the battery to the primary winding.Type: GrantFiled: October 16, 2001Date of Patent: January 13, 2004Assignee: Denso CorporationInventors: Noboru Nagase, Tetsuya Miwa, Makoto Toriyama