Patents by Inventor Shuhei Oe

Shuhei Oe 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: 10400719
    Abstract: A flow rate measuring device measures a flow rate of a main flow flowing through a duct. The flow rate measuring device includes a bypass passage, a flow rate sensor, and a measurement body. The measurement body includes a measurement flow inlet opening toward an upstream side of the duct and a cylindrical portion opening toward a downstream side of the duct. The cylindrical portion is disposed to cover the measurement flow outlet. The cylindrical portion includes an outer circumferential surface guiding the main flow and an inner circumferential surface guiding the measurement flow. The cylindrical portion includes a waveform portion formed in an edge side of an opening of the cylindrical. The waveform portion divides the main flow guided by the cylindrical portion into a plurality of main flows and divides the measurement flow guided by the cylindrical portion into a plurality of measurement flows.
    Type: Grant
    Filed: December 12, 2016
    Date of Patent: September 3, 2019
    Assignees: DENSO CORPORATION, SOKEN, INC.
    Inventors: Shuhei Oe, Masataka Nishikori, Kengo Ito
  • Patent number: 10060305
    Abstract: A control device has two modes as control modes of an electric power supply to an electromagnetic solenoid, which are used when a first determining unit determines that a difference between a sensed value of a phase and a target value of the phase exceeds a permissible range. One of the modes is a special mode that is used when a second determining unit determines that the sensed value of the phase reaches a threshold value. Another one of the modes is a normal mode that is used when the second determining unit determines that the sensed value of the phase does not reach the threshold value. In the special mode, the control device controls supply of the electric power to the electromagnetic solenoid in such a manner that an opening degree of an advancing port is larger than the opening degree of the advancing port in the normal mode.
    Type: Grant
    Filed: October 26, 2016
    Date of Patent: August 28, 2018
    Assignees: DENSO CORPORATION, NIPPON SOKEN, INC., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shota Toda, Shuhei Oe, Toshiki Fujiyoshi, Haruhito Fujimura, Yu Yokoyama
  • Patent number: 9816407
    Abstract: When a lock demand of a camshaft phase occurs, a control mode of a hydraulic control valve is switched to a locking mode after the camshaft phase is controlled to a lock phase, and a lock pin is moved to a lock position. The camshaft phase is locked at the lock phase, and timing advance and timing retard chambers communicate with each other through a back space. In this state, a locking time filling control is executed. In the locking time filling control, the control mode of a hydraulic control valve is switched to a filling mode, the hydraulic oil is supplied to a timing advance chamber, both of the timing advance chamber and the timing retard chamber are filled with the hydraulic oil, the back space is filled with the hydraulic oil, and thereafter the control mode of the hydraulic control valve is returned to the locking mode.
    Type: Grant
    Filed: October 15, 2015
    Date of Patent: November 14, 2017
    Assignee: DENSO CORPORATION
    Inventors: Shuhei Oe, Shota Toda, Yoshiki Endo, Yuu Yokoyama, Toshiki Fujiyoshi
  • Publication number: 20170306903
    Abstract: The present disclosure provides a flow rate measuring device for measuring a flow rate of a main flow flowing through a duct. The flow rate measuring device includes a bypass passage, a blow rate sensor, and a measurement body. The measurement body includes a measurement flow inlet and a cylindrical portion. The measurement flow inlet is open toward an upstream side of the duct. The measurement flow outlet is open toward a downstream side of the duct. The cylindrical portion is disposed to cover the measurement flow outlet. The cylindrical portion includes an outer circumferential surface, which guides the main flow, and an inner circumferential surface, which guides the measurement flow. The cylindrical portion includes a waveform portion that is formed in an edge side of an opening of the cylindrical.
    Type: Application
    Filed: December 12, 2016
    Publication date: October 26, 2017
    Applicants: DENSO CORPORATION, NIPPON SOKEN, INC.
    Inventors: Shuhei OE, Masataka NISHIKORI, Kengo ITO
  • Patent number: 9719430
    Abstract: A control system for an internal combustion engine has an intake valve, an exhaust valve, and an exhaust purifying catalyst that purifies exhaust gas after combustion of a fuel. During a fuel cut in which no fuel is supplied, a closing timing of the intake valve is controlled to a delayed angle side more than at a timing when the fuel is supplied and to a delayed angle side more than at a timing at a bottom dead center of an intake stroke, and an opening timing of the exhaust valve is controlled to an advanced angle side more than at the timing when the fuel is supplied and to an advanced angle side more than at the timing at the bottom dead center of an expansion stroke.
    Type: Grant
    Filed: May 13, 2015
    Date of Patent: August 1, 2017
    Assignee: DENSO CORPORATION
    Inventors: Kazuaki Ueda, Tomoaki Nakano, Shigeru Maeda, Masataka Nishikori, Shuhei Oe, Hikaru Kokumai
  • Publication number: 20170122140
    Abstract: A control device has two modes as control modes of an electric power supply to an electromagnetic solenoid, which are used when a first determining unit determines that a difference between a sensed value of a phase and a target value of the phase exceeds a permissible range. One of the modes is a special mode that is used when a second determining unit determines that the sensed value of the phase reaches a threshold value. Another one of the modes is a normal mode that is used when the second determining unit determines that the sensed value of the phase does not reach the threshold value. In the special mode, the control device controls supply of the electric power to the electromagnetic solenoid in such a manner that an opening degree of an advancing port is larger than the opening degree of the advancing port in the normal mode.
    Type: Application
    Filed: October 26, 2016
    Publication date: May 4, 2017
    Inventors: Shota TODA, Shuhei OE, Toshiki FUJIYOSHI, Haruhito FUJIMURA, Yu YOKOYAMA
  • Patent number: 9583248
    Abstract: In a solenoid of a hydraulic pressure control apparatus, a region adjacent to an oil flow guide portion of a stopper breathing passage is formed in a magnetism application region, through which a leakage magnetic flux leaking from a magnetic circuit at a time of turning on of a coil passes. Thereby, magnetic foreign objects made of iron or iron containing material are magnetically attracted to the leakage magnetic flux, so that intrusion of the foreign objects from an outside of the solenoid into a second volume variable chamber through the stopper breathing passage is limited.
    Type: Grant
    Filed: March 26, 2015
    Date of Patent: February 28, 2017
    Assignees: DENSO CORPORATION, NIPPON SOKEN, INC., HAMANAKODENSO CO., LTD.
    Inventors: Shota Toda, Shuhei Oe, Shoji Isogai, Motoyoshi Ando, Takao Ishida, Kengo Suzuki
  • Patent number: 9447851
    Abstract: A power transmission system transmits power from an internal combustion engine to a first and a second auxiliary device through an endless transmitting member. Prior to issuing of an engine start request, the first auxiliary device is actuated to move a tensioner pulley to a given position to increase the degree of tension of the endless transmitting member. The actuation of the first auxiliary device as an engine starter upon the issuing of the engine start request, therefore, enables a drive shaft of the engine to be rotated immediately within a required time to crank the engine. This achieves a quick start of the engine and results in a decrease in amount of time between the issuing of the engine start request and the actual start of the engine.
    Type: Grant
    Filed: December 17, 2014
    Date of Patent: September 20, 2016
    Assignee: DENSO CORPORATION
    Inventors: Hitoshi Noguchi, Hiroshi Okada, Tomoaki Nakano, Yoshihiro Yamashita, Yousuke Yamamoto, Kazuhisa Hara, Toshihisa Nakajima, Kazuki Matsuo, Toshikazu Mori, Shuhei Oe, Hikaru Kokumai, Kiyoshi Iwade
  • Publication number: 20160108771
    Abstract: When a lock demand of a camshaft phase occurs, a control mode of a hydraulic control valve s switched to a locking mode after an actual camshaft phase is controlled to a lock phase, and a lock pin (an inner pin and an outer pin) is moved to a lock position. Thus, the camshaft phase is locked at the lock phase, and a timing advance chamber and a timing retard chamber are made a state of communicating with each other through a back space. In this state, a locking time filling control is executed. In the locking time filling control, the control mode of a hydraulic control valve is switched to a filling mode, the hydraulic oil is supplied to a timing advance chamber, both of the timing advance chamber and the timing retard chamber are filled with the hydraulic oil, the back space is filled with the hydraulic oil, and thereafter the control mode of the hydraulic control valve is returned to the locking mode.
    Type: Application
    Filed: October 15, 2015
    Publication date: April 21, 2016
    Inventors: Shuhei OE, Shota TODA, Yoshiki ENDO, Yuu YOKOYAMA, Toshiki FUJIYOSHI
  • Publication number: 20150330313
    Abstract: A control system for an internal combustion engine has an intake valve, an exhaust valve, and an exhaust purifying catalyst that purifies exhaust gas after combustion of a fuel. During a fuel cut in which no fuel is supplied, a closing timing of the intake valve is controlled to a delayed angle side more than at a timing when the fuel is supplied and to a delayed angle side more than at a timing at a bottom dead center of an intake stroke, and an opening timing of the exhaust valve is controlled to an advanced angle side more than at the timing when the fuel is supplied and to an advanced angle side more than at the timing at the bottom dead center of an expansion stroke.
    Type: Application
    Filed: May 13, 2015
    Publication date: November 19, 2015
    Inventors: Kazuaki UEDA, Tomoaki NAKANO, Shigeru MAEDA, Masataka NISHIKORI, Shuhei OE, Hikaru KOKUMAI
  • Patent number: 9151233
    Abstract: A vehicle controller performs a throttle-valve-late-close control in which the throttle valve is held open until a delay time has passed after the fuel cut is started, and an EGR-valve-open-close control in which the EGR valve is repeatedly opened and closed. Then, the throttle valve is closed and the EGR valve is opened. In a period from a latter period of an exhaust stroke to a preceding period of an intake stroke, a valve-overlap control is executed so that a variable valve timing controller is controlled to make both an intake valve and an exhaust valve opened. A pumping loss of an engine is sufficiently reduced and an energy-regenerate efficiency can be effectively improved.
    Type: Grant
    Filed: November 12, 2013
    Date of Patent: October 6, 2015
    Assignee: DENSO CORPORATION
    Inventors: Taketsugu Sasaki, Shuhei Oe, Masanori Sugiura, Takashi Satoh, Motoyoshi Hatta
  • Publication number: 20150279538
    Abstract: In a solenoid of a hydraulic pressure control apparatus, a region adjacent to an oil flow guide portion of a stopper breathing passage is formed in a magnetism application region, through which a leakage magnetic flux leaking from a magnetic circuit at a time of turning on of a coil passes. Thereby, magnetic foreign objects made of iron or iron containing material are magnetically attracted to the leakage magnetic flux, so that intrusion of the foreign objects from an outside of the solenoid into a second volume variable chamber through the stopper breathing passage is limited.
    Type: Application
    Filed: March 26, 2015
    Publication date: October 1, 2015
    Inventors: Shota TODA, Shuhei OE, Shoji ISOGAI, Motoyoshi ANDO, Takao ISHIDA, Kengo SUZUKI
  • Patent number: 9140197
    Abstract: A valve timing control apparatus includes a temperature sensing member which expands at a main lock phase when a temperature of an engine is higher than or equal to a predetermined temperature so as to prohibit a main lock component from moving out of a main lock hole to a guide slot. The temperature sensing member shrinks at the main lock phase when the temperature of the engine is lower than the predetermined temperature so as to allow the main lock component to move out of the main lock hole toward the guide slot.
    Type: Grant
    Filed: April 8, 2014
    Date of Patent: September 22, 2015
    Assignee: DENSO CORPORATION
    Inventors: Shinya Nakata, Kazuhiro Sasao, Takashi Ooga, Takehiro Tanaka, Kosei Takagi, Yuusuke Yasuki, Shuhei Oe
  • Publication number: 20150167797
    Abstract: A power transmission system transmits power from an internal combustion engine to a first and a second auxiliary device through an endless transmitting member. Prior to issuing of an engine start request, the first auxiliary device is actuated to move a tensioner pulley to a given position to increase the degree of tension of the endless transmitting member. The actuation of the first auxiliary device as an engine starter upon the issuing of the engine start request, therefore, enables a drive shaft of the engine to be rotated immediately within a required time to crank the engine. This achieves a quick start of the engine and results in a decrease in amount of time between the issuing of the engine start request and the actual start of the engine.
    Type: Application
    Filed: December 17, 2014
    Publication date: June 18, 2015
    Inventors: Hitoshi NOGUCHI, Hiroshi OKADA, Tomoaki NAKANO, Yoshihiro YAMASHITA, Yousuke YAMAMOTO, Kazuhisa HARA, Toshihisa NAKAJIMA, Kazuki MATSUO, Toshikazu MORI, Shuhei OE, Hikaru KOKUMAI, Kiyoshi IWADE
  • Patent number: 8991345
    Abstract: A main lock member is fitted in a main lock bore at a main lock phase for closing an intake valve at a timing later than a timing when a piston reaches a bottom dead center, whereby a rotation phase is locked. In a subordinate lock mechanism, the rotation phase is locked at a subordinate lock phase advancing further than the main lock phase. In a lock control mechanism, a temperature sensing body is changed to an expanded state, whereby a moving member is latched at a first position in which the main lock member is allowed to be fitted in the main lock bore, whereas at a main lock phase in a cold stop state after a timing when the temperature of the stopped internal combustion engine becomes less than a preset temperature, the temperature sensing body is changed to a contracted state.
    Type: Grant
    Filed: October 10, 2013
    Date of Patent: March 31, 2015
    Assignee: Denso Corporation
    Inventors: Yuusuke Yasuki, Shuhei Oe, Makoto Otsubo, Taketsugu Sasaki, Kuniaki Oka, Akira Okada, Takehiro Tanaka
  • Publication number: 20140366823
    Abstract: A main locking mechanism locks a phase at a main locking phase, at which an intake valve is closed at timing later than a bottom dead center, by inserting a main locking member into a main locking hole. A sub locking mechanism locks a phase at a sub locking phase advanced more than the main locking phase by inserting a sub locking member into a sub locking hole. A movable body disposed in the main locking hole reciprocates between an open position and a blocking position of the main locking hole. During a warm start of an engine, a driving source maintains the movable body at the open position at which the inserting of the main locking member into the main locking hole is maintained. In contrast, during a cold start of the engine, the driving source drives the movable body to the blocking position at which the main locking member is removed from the main locking hole.
    Type: Application
    Filed: June 10, 2014
    Publication date: December 18, 2014
    Inventors: Hirohisa NODA, Tetsurou MITSUTANI, Dai OSADA, Takehito MIZUNUMA, Takehiro TANAKA, Shuhei OE, Yuusuke YASUKI
  • Publication number: 20140299081
    Abstract: A valve timing control apparatus includes a temperature sensing member which expands at a main lock phase when a temperature of an engine is higher than or equal to a predetermined temperature so as to prohibit a main lock component from moving out of a main lock hole to a guide slot. The temperature sensing member shrinks at the main lock phase when the temperature of the engine is lower than the predetermined temperature so as to allow the main lock component to move out of the main lock hole toward the guide slot.
    Type: Application
    Filed: April 8, 2014
    Publication date: October 9, 2014
    Applicant: DENSO CORPORATION
    Inventors: Shinya NAKATA, Kazuhiro SASAO, Takashi OOGA, Takehiro TANAKA, Kosei TAKAGI, Yuusuke YASUKI, Shuhei OE
  • Patent number: 8855893
    Abstract: A valve timing control apparatus includes a housing that is rotatable with a crankshaft; a vane rotor that is rotatable with a camshaft; and a phase controller to compulsorily change a rotation phase of the vane rotor alternately between an advance side and a retard side with respect to the housing if an engine shifts to a high rotation state after the engine continuously has a low rotation state for a predetermined period or more. The engine in the low rotation state has a rotation speed lower than a predetermined rotation speed. The engine in the high rotation state has a rotation speed equal to or higher than the predetermined rotation speed.
    Type: Grant
    Filed: August 2, 2011
    Date of Patent: October 7, 2014
    Assignees: Nippon Soken, Inc., Denso Corporation, Toyota Jidosha Kabushiki Kaisha
    Inventors: Shuhei Oe, Hiroya Andou, Jun Yamada, Takehiro Tanaka, Yoshihito Moriya
  • Patent number: 8844485
    Abstract: A valve timing controller includes a lock mechanism that locks a rotation phase at a main lock phase when an internal combustion engine is started with an ambient temperature more than or equal to a preset temperature. The main lock phase represents a rotation phase set for closing an intake valve at a later timing later than a timing when a piston reaches a bottom dead center of a cylinder in the internal combustion engine. The lock mechanism locks the rotation phase at a sub lock phase representing a rotation phase advanced rather than the main lock phase in the internal combustion engine when the internal combustion engine is started with an ambient temperature lower than the present temperature.
    Type: Grant
    Filed: February 7, 2013
    Date of Patent: September 30, 2014
    Assignees: Denso Corporation, Nippon Soken, Inc.
    Inventors: Takehiro Tanaka, Takashi Yamaguchi, Makoto Otsubo, Shuhei Oe, Taketsugu Sasaki, Yuusuke Yasuki, Kuniaki Oka
  • Patent number: 8733307
    Abstract: A sealing structure has a permanent magnet and a magnetic-flux guiding member for guiding magnetic flux of the permanent magnet to a brake shaft of a brake rotating member. The magnetic-flux guiding member surrounds an outer periphery of the brake shaft so as to form a sealing gap around the brake shaft. The sealing gap is communicated to a fluid chamber, in which magnetic viscous fluid is filled. A fluid sealing member is provided at the brake shaft at a housing outer side of the magnetic-flux guiding member to form an intermediate fluid chamber, in which an intermediate fluid made of non-magnetic liquid is filled.
    Type: Grant
    Filed: September 27, 2012
    Date of Patent: May 27, 2014
    Assignee: Denso Corporation
    Inventors: Seiichirou Washino, Toru Takahashi, Makoto Otsubo, Kuniaki Oka, Shuhei Oe