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).

  • Patent number: 12160144
    Abstract: 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: Grant
    Filed: April 20, 2022
    Date of Patent: December 3, 2024
    Assignee: DENSO CORPORATION
    Inventors: Syuhei Miyachi, Atsushi Saitou, Toshihiro Fujita, Noboru Nagase
  • Patent number: 12033922
    Abstract: 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: Grant
    Filed: December 21, 2021
    Date of Patent: July 9, 2024
    Assignee: DENSO CORPORATION
    Inventors: Akihiro Fukatsu, Noboru Nagase, Toshihiro Nagaya
  • Patent number: 10961963
    Abstract: 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: Grant
    Filed: April 12, 2019
    Date of Patent: March 30, 2021
    Assignee: DENSO CORPORATION
    Inventors: Masashi Inaba, Noboru Nagase, Taichi Watanabe
  • Patent number: 10957474
    Abstract: 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: Grant
    Filed: April 12, 2019
    Date of Patent: March 23, 2021
    Assignee: DENSO CORPORATION
    Inventors: Masashi Inaba, Noboru Nagase, Taichi Watanabe
  • Patent number: 10837392
    Abstract: 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: Grant
    Filed: April 12, 2019
    Date of Patent: November 17, 2020
    Assignee: DENSO CORPORATION
    Inventors: Masashi Inaba, Noboru Nagase, Taichi Watanabe
  • Patent number: 9821651
    Abstract: 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: Grant
    Filed: March 26, 2015
    Date of Patent: November 21, 2017
    Assignee: DENSO CORPORATION
    Inventors: Tatsuya Kakehi, Noboru Nagase, Kiyoshi Nagata, Akihiro Konno
  • Patent number: 8149559
    Abstract: 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: Grant
    Filed: June 16, 2008
    Date of Patent: April 3, 2012
    Assignee: Denso Corporation
    Inventors: Tatsuya Kakehi, Noboru Nagase
  • Patent number: 7819337
    Abstract: 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: Grant
    Filed: June 28, 2007
    Date of Patent: October 26, 2010
    Assignee: DENSO CORPORATION
    Inventor: Noboru Nagase
  • Patent number: 7812503
    Abstract: 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: Grant
    Filed: August 19, 2008
    Date of Patent: October 12, 2010
    Assignee: Denso Corporation
    Inventors: Tatsuya Kakehi, Noboru Nagase
  • Patent number: 7706956
    Abstract: 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: Grant
    Filed: September 27, 2007
    Date of Patent: April 27, 2010
    Assignee: DENSO Corporation
    Inventors: Noboru Nagase, Hideo Naruse, Takashi Kikutani
  • Patent number: 7626315
    Abstract: 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: Grant
    Filed: May 22, 2006
    Date of Patent: December 1, 2009
    Assignee: Denso Corporation
    Inventor: Noboru Nagase
  • Patent number: 7546830
    Abstract: 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: Grant
    Filed: May 31, 2007
    Date of Patent: June 16, 2009
    Assignee: DENSO CORPORATION
    Inventors: Noboru Nagase, Takashi Kikutani
  • Patent number: 7474035
    Abstract: 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: Grant
    Filed: June 7, 2007
    Date of Patent: January 6, 2009
    Assignees: Denso Corporation, Nippon Soken, Inc.
    Inventors: Yasuhiro Fukagawa, Tsutomu Nakamura, Takamichi Kamiya, Noboru Nagase, Hideo Naruse
  • Publication number: 20080316671
    Abstract: 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: Application
    Filed: June 16, 2008
    Publication date: December 25, 2008
    Applicant: DENSO CORPORATION
    Inventors: Tatsuya Kakehi, Noboru Nagase
  • Publication number: 20080072879
    Abstract: 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: Application
    Filed: September 27, 2007
    Publication date: March 27, 2008
    Applicant: DENSO CORPORATION
    Inventors: Noboru Nagase, Hideo Naruse, Takashi Kikutani
  • Publication number: 20080006724
    Abstract: 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: Application
    Filed: June 28, 2007
    Publication date: January 10, 2008
    Applicant: DENSO CORPORATION
    Inventor: Noboru Nagase
  • Publication number: 20070296307
    Abstract: 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: Application
    Filed: June 7, 2007
    Publication date: December 27, 2007
    Applicants: Denso Corporation, Nippon Soken, Inc.
    Inventors: Yasuhiro Fukagawa, Tsutomu Nakamura, Takamichi Kamiya, Noboru Nagase, Hideo Naruse
  • Publication number: 20070289579
    Abstract: 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: Application
    Filed: May 31, 2007
    Publication date: December 20, 2007
    Applicant: DENSO CORPORATION
    Inventors: Noboru Nagase, Takashi Kikutani
  • Publication number: 20060279592
    Abstract: 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: Application
    Filed: May 22, 2006
    Publication date: December 14, 2006
    Applicant: DENSO CORPORATION
    Inventor: Noboru Nagase
  • Patent number: 6675784
    Abstract: 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: Grant
    Filed: October 16, 2001
    Date of Patent: January 13, 2004
    Assignee: Denso Corporation
    Inventors: Noboru Nagase, Tetsuya Miwa, Makoto Toriyama