Patents by Inventor Takao Miyake

Takao Miyake 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: 11873775
    Abstract: An injection amount variation of a plurality of fuel injection valves is reduced regardless of a state of an engine.
    Type: Grant
    Filed: November 4, 2020
    Date of Patent: January 16, 2024
    Assignee: HITACHI ASTEMO, LTD.
    Inventors: Fumihiro Itaba, Osamu Mukaihara, Takao Miyake, Takuya Watai
  • Patent number: 11767926
    Abstract: To provide a fuel injection device capable of improving waterproof performance of the coil portion. A fuel injection device 1 includes a coil bobbin 51 disposed in a housing 70 and having a bobbin outer peripheral surface 51a that holds a coil 50 and a bobbin inner peripheral surface 51b that is a surface on an opposite side of the bobbin outer peripheral surface 51a, and a first outer peripheral surface 46a and a first outer peripheral surface 10b (guide portion) that come into contact with the bobbin inner peripheral surface 51b. A first space S1 and a second space S2 (internal space) are formed by the first outer peripheral surface 46a and the first outer peripheral surface 10b, and the bobbin inner peripheral surface 51b, and the first space S1 and the second space S2 communicate with a space filled with the connecting portion 80.
    Type: Grant
    Filed: May 19, 2021
    Date of Patent: September 26, 2023
    Assignee: Hitachi Astemo, Ltd.
    Inventors: Masashi Sugaya, Takao Miyake, Taisuke Sugii, Takuya Watai
  • Publication number: 20230250889
    Abstract: To provide a fuel injection device capable of improving waterproof performance of the coil portion. A fuel injection device 1 includes a coil bobbin 51 disposed in a housing 70 and having a bobbin outer peripheral surface 51a that holds a coil 50 and a bobbin inner peripheral surface 51b that is a surface on an opposite side of the bobbin outer peripheral surface 51a, and a first outer peripheral surface 46a and a first outer peripheral surface 10b (guide portion) that come into contact with the bobbin inner peripheral surface 51b. A first space S1 and a second space S2 (internal space) are formed by the first outer peripheral surface 46a and the first outer peripheral surface 10b, and the bobbin inner peripheral surface 51b, and the first space S1 and the second space S2 communicate with a space filled with the connecting portion 80.
    Type: Application
    Filed: May 19, 2021
    Publication date: August 10, 2023
    Inventors: Masashi SUGAYA, Takao MIYAKE, Taisuke SUGII, Takuya WATAI
  • Patent number: 11703021
    Abstract: In a fuel injection device, a driving unit structure has a magnetic aperture, in which an inner diameter is gradually enlarged toward the mover side, provided in an inner peripheral surface of the magnetic core. It is possible to reduce magnetic delay time upon valve opening from the supply of the electric current to the coil to the rise of magnetic flux and magnetic delay time upon valve closing from the stoppage of the electric current to the coil to reduction of magnetic flux, by providing a magnetic aperture in the inner peripheral surface of the magnetic core. Thus it is possible to improve the dynamic responsiveness upon valve opening and valve closing.
    Type: Grant
    Filed: June 21, 2021
    Date of Patent: July 18, 2023
    Assignee: Hitachi Astemo, Ltd.
    Inventors: Ryo Kusakabe, Motoyuki Abe, Tohru Ishikawa, Noriyuki Maekawa, Masahiro Soma, Takao Miyake, Yasuo Namaizawa
  • Publication number: 20230193868
    Abstract: A fuel injection device includes a nozzle element, an injection hole forming member, and a valve element. The injection hole forming member includes a seat part having the seat surface, and a suck chamber formed on a front end part of the seat part, the suck chamber being a recess denting in the direction of heading from the seat surface toward a front end part. The suck chamber has a suck chamber injection hole from which a fuel is jetted toward the ignition plug.
    Type: Application
    Filed: May 13, 2021
    Publication date: June 22, 2023
    Inventors: Takuya WATAI, Takao MIYAKE, Taisuke SUGII, Masashi SUGAYA
  • Patent number: 11591994
    Abstract: For a fuel injection device, a configuration to improve fuel sealability when a valve is closed is provided. Therefore, the fuel injection device includes: a valve body that opens and closes a fuel flow path; a movable iron core in which a fuel passage hole communicating an upstream side and a downstream side is formed, and that operates the valve body toward the upstream side; a biasing spring whose one end contacts the movable iron core, and that biases the movable iron core in a valve opening direction; and a regulating unit that regulates movement of the one end of the biasing spring, in which the shortest distance between the one end of the biasing spring and the fuel passage hole is larger than a radial travel distance of the one end until radial movement of the one end is regulated by the regulating unit.
    Type: Grant
    Filed: October 31, 2018
    Date of Patent: February 28, 2023
    Assignee: HITACHI ASTEMO, LTD.
    Inventors: Masashi Sugaya, Takao Miyake, Yasuo Namaizawa
  • Publication number: 20220412282
    Abstract: An injection amount variation of a plurality of fuel injection valves is reduced regardless of a state of an engine.
    Type: Application
    Filed: November 4, 2020
    Publication date: December 29, 2022
    Applicant: HITACHI ASTEMO, LTD.
    Inventors: Fumihiro ITABA, Osamu MUKAIHARA, Takao MIYAKE, Takuya WATAI
  • Patent number: 11359569
    Abstract: An object of the present invention is to promote the stabilization of the fuel injection amount in a fuel injection device in which a valve body and a movable iron core are configured to be relatively displaceable. In a control unit 120 of a fuel injection device 100 which includes a control part that controls the energization time of a current flowing through a coil 108 based on the pulse width of a drive command pulse, the control part is configured to be able to execute control to split a required fuel injection amount for one combustion cycle into portions and inject the portions in a plurality of times.
    Type: Grant
    Filed: October 11, 2019
    Date of Patent: June 14, 2022
    Assignee: Hitachi Astemo, Ltd.
    Inventors: Akiyasu Miyamoto, Takao Miyake, Ryo Kusakabe
  • Patent number: 11359567
    Abstract: Provided is a control device for a fuel injection device capable of detecting a variation in valve opening start timing of the fuel injection device and stabilizing a fuel injection quantity. Therefore, the control device for the fuel injection device of the present invention is a control device for a plurality of fuel injection devices each including: a valve body that opens a fuel passage by separating from a valve seat; a movable element that causes an opening/closing operation of the valve body; and a stator that attracts the movable element by a drive current flowing through a coil. This control device includes a control unit that controls the energization time of the drive current by a pulse width of a drive command pulse. The control unit estimates a valve opening start timing having a correlation with a detected valve closing completion timing. Further, the pulse width of the drive command pulse is corrected based on the valve opening start timing.
    Type: Grant
    Filed: February 6, 2020
    Date of Patent: June 14, 2022
    Assignee: Hitachi Astemo, Ltd.
    Inventors: Akiyasu Miyamoto, Takao Miyake, Taisuke Sugii
  • Patent number: 11313336
    Abstract: An object of the present invention is to provide a fluid control device with an improved effect of suppressing blowhole generation. Therefore, a component for a flow rate control device of the present invention includes: a first component 140 (A); a second component 107 (B) fixed to the first component by a press-fitting portion 802; a butt-welded portion 803 connecting the first component and the second component; and a first gap 1001 and a second gap 1002 formed between mutually opposing surfaces of the first component and the second component. The first gap is provided on a side of the press-fitting portion with respect to the second gap between the press-fitting portion and the butt-welded portion, and is formed in a direction intersecting a press-fitting direction. The second gap is provided on a side of the butt-welded portion with respect to the first gap between the press-fitting portion and the welded portion, and is formed in a direction intersecting the first gap.
    Type: Grant
    Filed: February 13, 2019
    Date of Patent: April 26, 2022
    Assignee: HITACHI ASTEMO, LTD.
    Inventors: Takao Miyake, Yasuo Namaizawa, Takumasa Furuyama
  • Publication number: 20220099040
    Abstract: Provided is a control device for a fuel injection device capable of detecting a variation in valve opening start timing of the fuel injection device and stabilizing a fuel injection quantity. Therefore, the control device for the fuel injection device of the present invention is a control device for a plurality of fuel injection devices each including: a valve body that opens a fuel passage by separating from a valve seat; a movable element that causes an opening/closing operation of the valve body; and a stator that attracts the movable element by a drive current flowing through a coil. This control device includes a control unit that controls the energization time of the drive current by a pulse width of a drive command pulse. The control unit estimates a valve opening start timing having a correlation with a detected valve closing completion timing. Further, the pulse width of the drive command pulse is corrected based on the valve opening start timing.
    Type: Application
    Filed: February 6, 2020
    Publication date: March 31, 2022
    Inventors: Akiyasu MIYAMOTO, Takao MIYAKE, Taisuke SUGII
  • Patent number: 11242830
    Abstract: Provided is a fuel injection valve capable of quickly stopping a position of a movable element at a predetermined position after closing a valve while reducing an impact force of a valve body. Therefore, a valve body 101 includes a sleeve 113. A first movable core 201 (first movable element) lifts the valve body 101 by the attractive force of a magnetic core 107. A second movable core 202 (second movable element) further lifts the valve body 101 by the attractive force of the magnetic core 107 after the first movable core 201 (first movable element) lifts the valve body 101. After the valve body 101 is seated on the seat member 102 and the second movable core 202 (second movable element) is separated from the sleeve 113, a bottom surface 201g of the first movable core 201 (first movable element) collides with a storage bottom surface 111b (collision receiving portion).
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: February 8, 2022
    Assignee: HITACHI ASTEMO, LTD.
    Inventors: Akiyasu Miyamoto, Yasuo Namaizawa, Takao Miyake, Takuya Watai
  • Publication number: 20210396191
    Abstract: An object of the present invention is to promote the stabilization of the fuel injection amount in a fuel injection device in which a valve body and a movable iron core are configured to be relatively displaceable. In a control unit 120 of a fuel injection device 100 which includes a control part that controls the energization time of a current flowing through a coil 108 based on the pulse width of a drive command pulse, the control part is configured to be able to execute control to split a required fuel injection amount for one combustion cycle into portions and inject the portions in a plurality of times.
    Type: Application
    Filed: October 11, 2019
    Publication date: December 23, 2021
    Inventors: Akiyasu MIYAMOTO, Takao MIYAKE, Ryo KUSAKABE
  • Publication number: 20210310452
    Abstract: In a fuel injection device, a driving unit structure has a magnetic aperture, in which an inner diameter is gradually enlarged toward the mover side, provided in an inner peripheral surface of the magnetic core. It is possible to reduce magnetic delay time upon valve opening from the supply of the electric current to the coil to the rise of magnetic flux and magnetic delay time upon valve closing from the stoppage of the electric current to the coil to reduction of magnetic flux, by providing a magnetic aperture in the inner peripheral surface of the magnetic core. Thus it is possible to improve the dynamic responsiveness upon valve opening and valve closing.
    Type: Application
    Filed: June 21, 2021
    Publication date: October 7, 2021
    Inventors: Ryo KUSAKABE, Motoyuki ABE, Tohru ISHIKAWA, Noriyuki MAEKAWA, Masahiro SOMA, Takao MIYAKE, Yasuo NAMAIZAWA
  • Patent number: 11098686
    Abstract: An object of the present invention is to provide a fuel injection valve that can be used in a gasoline engine and can take fuel into an injection hole with a small pressure loss near a seat portion on which a valve is seated. Thus, the present invention provides a fuel injection valve for a gasoline engine which includes: a plurality of injection holes; and a seat portion that opens and closes a fuel passage to the plurality of injection holes in cooperation with a valve. At least one fuel injection hole among the plurality of injection holes is configured in a shape such that an injection hole inlet has a long axis and a short axis, and the long axis is directed in a direction in which an extension line intersects with the seat portion.
    Type: Grant
    Filed: April 19, 2018
    Date of Patent: August 24, 2021
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Takaki Itaya, Tomoyuki Hosaka, Noriyuki Maekawa, Takao Miyake
  • Publication number: 20210239081
    Abstract: Provided is a fuel injection valve capable of improving durability as compared with the conventional case and making the amount of fuel injected uniform as compared with the conventional case. Further, the present invention provides a fuel injection valve capable of injecting fuel with a high fuel pressure as compared with the conventional case and improving the reliability of the product as compared with the conventional case.
    Type: Application
    Filed: August 8, 2019
    Publication date: August 5, 2021
    Applicant: Hitachi Automotive Systems, Ltd.
    Inventors: Takuya WATAI, Takao MIYAKE, Masashi SUGAYA, Yasuo NAMAIZAWA
  • Patent number: 11067045
    Abstract: In a fuel injection device, a driving unit structure has a magnetic aperture, in which an inner diameter is gradually enlarged toward the mover side, provided in an inner peripheral surface of the magnetic core. It is possible to reduce magnetic delay time upon valve opening from the supply of the electric current to the coil to the rise of magnetic flux and magnetic delay time upon valve closing from the stoppage of the electric current to the coil to reduction of magnetic flux, by providing a magnetic aperture in the inner peripheral surface of the magnetic core. Thus it is possible to improve the dynamic responsiveness upon valve opening and valve closing.
    Type: Grant
    Filed: March 9, 2012
    Date of Patent: July 20, 2021
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Ryo Kusakabe, Motoyuki Abe, Tohru Ishikawa, Noriyuki Maekawa, Masahiro Soma, Takao Miyake, Yasuo Namaizawa
  • Publication number: 20210207566
    Abstract: Provided is a fuel injection device that sets an electromagnetic attraction force, which is generated in a magnetic gap between a magnetic core and a movable element, to more than or equal to a desired value. The fuel injection device includes a movable element that is attracted to the magnetic core and a housing provided opposite to the movable element in a direction orthogonal to an axial direction, wherein the movable element is configured so that an axial length of the movable element is 1.25 to 1.46 times as long as an axial length of the housing.
    Type: Application
    Filed: January 23, 2017
    Publication date: July 8, 2021
    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Takatoshi IIZUKA, Kiyotaka OGURA, Takao MIYAKE, Masashi SUGAYA
  • Patent number: 10995655
    Abstract: A fuel injection device including a valve body having an injection hole-formed part having a plurality of injection holes on the leading end side of the valve body. An injection hole comprises a crossing angle, ?1, between a central axis of the injection hole-formed part and an injection hole axis, and another injection hole comprises a crossing angle, ?2, between the central axis and another injection hole axis. ?2 is larger than ?1. The injection holes are formed such that a distance between the central axis and an inlet surface center of the injection hole is longer than a distance between the central axis and another inlet surface center of the another injection hole. A straight line beyond an outlet surface in the injection hole axis does not intersect with another straight line beyond another outlet surface in the another injection hole axis.
    Type: Grant
    Filed: November 21, 2017
    Date of Patent: May 4, 2021
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Akira Iizuka, Tohru Ishikawa, Takao Miyake, Kazuki Yoshimura
  • Publication number: 20210040926
    Abstract: An object of the present invention is to provide a fluid control device with an improved effect of suppressing blowhole generation. Therefore, a component for a flow rate control device of the present invention includes: a first component 140 (A); a second component 107 (B) fixed to the first component by a press-fitting portion 802; a butt-welded portion 803 connecting the first component and the second component; and a first gap 1001 and a second gap 1002 formed between mutually opposing surfaces of the first component and the second component. The first gap is provided on a side of the press-fitting portion with respect to the second gap between the press-fitting portion and the butt-welded portion, and is formed in a direction intersecting a press-fitting direction. The second gap is provided on a side of the butt-welded portion with respect to the first gap between the press-fitting portion and the welded portion, and is formed in a direction intersecting the first gap.
    Type: Application
    Filed: February 13, 2019
    Publication date: February 11, 2021
    Applicant: Hitachi Automotive Systems, Ltd.
    Inventors: Takao MIYAKE, Yasuo NAMAIZAWA, Takumasa FURUYAMA