Patents Assigned to IHI Corporation
  • Patent number: 11125085
    Abstract: A blade of a fan or compressor that reduces loss by enlarging a laminar flow region over a blade surface is provided. The blade is divided into a subsonic region where the relative Mach number of the inlet air flow during rated operation of a turbofan engine is lower than 0.8 and a transonic region where the relative Mach number is equal to or higher than 0.8. A blade surface angle change rate is based on an angle formed by a tangent to the blade surface and the axis of the engine, the leading edge blade surface angle, and the trailing edge blade surface angle at. In each of the subsonic region and the transonic region, values of the blade surface angle change rate on the pressure and suction surfaces are defined at predetermined axial locations along the chord on the pressure and suction surfaces.
    Type: Grant
    Filed: November 21, 2019
    Date of Patent: September 21, 2021
    Assignee: IHI CORPORATION
    Inventors: Ryuichi Okada, Ryosuke Hayashi, Takeshi Murooka, Tomonori Enoki
  • Patent number: 11118508
    Abstract: Provided is a variable capacity turbocharger, including: a drive ring including a main body portion having an annular shape; a first projection portion and a second projection portion, which are formed on the main body portion, and are arranged apart from one another in a circumferential direction of the main body portion so as to sandwich a link plate to which a nozzle vane is mounted; and a cutout portion, which is formed in a portion of the main body portion between the first projection portion and the second projection portion.
    Type: Grant
    Filed: June 11, 2020
    Date of Patent: September 14, 2021
    Assignee: IHI Corporation
    Inventors: Takao Asakawa, Kenichi Segawa, Takahiro Kobayashi, Ryota Sakisaka, Kazuko Takeuchi, Kenji Bunno
  • Patent number: 11119004
    Abstract: A strain estimation device according to an aspect of the present disclosure is a strain estimation device that estimates strain of a component provided in a fluid and includes a pressure acquisition unit that acquires a pressure signal including time-series pressure values at a predetermined position in a vicinity of the component, an estimation unit that estimates, based on the pressure signal, a strain signal including time-series strain values occurring at the component, and an output unit that outputs the strain signal. The estimation unit converts the pressure signal into the strain signal using an estimation filter determined based on a power spectral density of pressure and a power spectral density of strain occurring at the component when the pressure is applied to the position.
    Type: Grant
    Filed: December 28, 2016
    Date of Patent: September 14, 2021
    Assignee: IHI Corporation
    Inventor: Tatsuya Hashizume
  • Patent number: 11111928
    Abstract: An inducer includes a hub and a blade which radially protrudes from the hub and is helically provided. The inducer has a thick portion in which a first distance and a second distance coincides with each other in a region outside a position at which a height ratio of the blade is 0.5 while the first distance is shorter than the second distance in a region inside the position at which the height ratio of the blade is 0.5, in which the height ratio is a ratio of a distance from a connection portion between the hub and a root portion of the blade with respect to a height of the blade which is a distance from the connection portion between the hub and the root portion of the blade to a tip portion of the blade in the radial direction of the blade.
    Type: Grant
    Filed: January 19, 2018
    Date of Patent: September 7, 2021
    Assignee: IHI Corporation
    Inventor: Hiroshi Tomaru
  • Publication number: 20210268472
    Abstract: A reactor includes first heat transfer bodies including reaction flow channels through which a reaction fluid flows, second heat transfer bodies stacked on the first heat transfer bodies and including heat medium flow channels through which a heat medium flows and product flow channels through which a product flows that is produced in the reaction flow channels by a heat exchange between the reaction fluid and the heat medium, and product communication parts including communication spaces through which the product flows from the reaction flow channels to the product flow channels.
    Type: Application
    Filed: May 17, 2021
    Publication date: September 2, 2021
    Applicant: IHI CORPORATION
    Inventors: Taiga YAMAMOTO, Yusuke TAKEUCHI, Akihisa YANO, Shigeki SAKAKURA, Shunji MIYAJIMA
  • Patent number: 11105281
    Abstract: Provided is a marine engine, including: an air controller configured to supply compressed air to a combustion chamber in an upstroke of a piston after a crash astern signal is output; a fuel controller configured to stop supply of fuel to the combustion chamber when the crash astern signal is output, and to resume the supply of the fuel after a backward rotation of a crankshaft; and a compression ratio controller configured to move a top dead center position of the piston toward an opposite side of a bottom dead center position of the piston when the crash astern signal is output, and the top dead center position of the piston is on the bottom dead center position side with respect to a predetermined position set in advance.
    Type: Grant
    Filed: September 15, 2020
    Date of Patent: August 31, 2021
    Assignee: IHI CORPORATION
    Inventors: Yutaka Masuda, Yoshiyuki Umemoto, Toshihiko Shimizu
  • Patent number: 11097528
    Abstract: In a lining material peeling method of peeling a lining material, which is fixedly formed on a surface of a base material, from the base material, a liquefied fluid which evaporates after injection is injected to a boundary between the base material and the lining material.
    Type: Grant
    Filed: April 28, 2020
    Date of Patent: August 24, 2021
    Assignee: IHI CORPORATION
    Inventors: Akira Sadaki, Jun Maeno, Akito Yamasaki, Tomoko Ebata, Yuichi Takahama
  • Patent number: 11098620
    Abstract: Provided is a compression ratio varying mechanism, including a communication hole including: a first opening opened in an outer peripheral side surface of a piston rod; and a second opening, which is prevented from being opposed to the first opening in a radial direction of a piston rod, and is connected to an oil passage at a position apart from the first opening in a stroke direction.
    Type: Grant
    Filed: November 20, 2020
    Date of Patent: August 24, 2021
    Assignee: IHI CORPORATION
    Inventors: Yutaka Masuda, Jun Teramoto, Ryo Ohara
  • Patent number: 11092615
    Abstract: An acceleration-determination device (D) includes a gripping jig (1) that retains a gripping tool (1g) gripping a test piece (Y) in a state where the gripping tool is tilted from a horizontal state, detects a tilt angle of the gripping tool, and makes it possible to change a gripping force of the gripping tool, a mass adjuster (B) that adjusts a mass of the test piece such that a component force of gravity in a tilt direction which varies according to the tilt angle equals gravity acting on the test piece before tilting thereof, and an acceleration calculator (3b) that calculates an acceleration of the test piece when the test piece is detached from the gripping tool based on the tilt angle and a gravitational acceleration acting on the test piece when the test piece is detached from the gripping tool.
    Type: Grant
    Filed: August 2, 2019
    Date of Patent: August 17, 2021
    Assignee: IHI CORPORATION
    Inventors: Takayuki Nakayama, Yuji Kurata, Takuya Sunakawa
  • Patent number: 11095157
    Abstract: A wireless power-transmitting system which wirelessly transmits electric power by making a power-transmitting coil and a power-receiving coil face each other includes: a cover which is slidable between a closing position at which the cover covers an area above a facing surface of the power-transmitting coil and an open position at which the cover is retracted from the area above the facing surface; and a hook member which makes a foreign object placed on the cover move together with the cover sliding from the closing position to the open position.
    Type: Grant
    Filed: September 20, 2019
    Date of Patent: August 17, 2021
    Assignee: IHI CORPORATION
    Inventors: Eiichiro Fujiwara, Susumu Tokura
  • Patent number: 11092192
    Abstract: The radial foil bearing includes: a housing provided with an insertion hole; a back foil disposed on an inner peripheral surface of the insertion hole, a notch being provided at an edge of the hack foil in an axial direction in which the insertion hole extends; and an engagement member attached to the housing in a state of passing through the notch and extending to outside of a formation area of the notch in a circumferential direction of the insertion hole on an inner peripheral side of the back foil.
    Type: Grant
    Filed: December 26, 2019
    Date of Patent: August 17, 2021
    Assignee: IHI CORPORATION
    Inventor: Naomichi Omori
  • Publication number: 20210247416
    Abstract: An acceleration-determination device (D) includes a gripping jig (1) that retains a gripping tool (1g) gripping a test piece (Y) in a state where the gripping tool is tilted from a horizontal state, detects a tilt angle of the gripping tool, and makes it possible to change a gripping force of the gripping tool, a mass adjuster (B) that adjusts a mass of the test piece such that a component force of gravity in a tilt direction which varies according to the tilt angle equals gravity acting on the test piece before tilting thereof, and an acceleration calculator (3b) that calculates an acceleration of the test piece when the test piece is detached from the gripping tool based on the tilt angle and a gravitational acceleration acting on the test piece when the test piece is detached from the gripping tool.
    Type: Application
    Filed: August 2, 2019
    Publication date: August 12, 2021
    Applicant: IHI CORPORATION
    Inventors: Takayuki NAKAYAMA, Yuji KURATA, Takuya SUNAKAWA
  • Patent number: 11085380
    Abstract: An engine control system includes: a delay estimating unit configured to estimate a auto-ignition delay based on first parameters including a composition of fuel gas; a auto-ignition predicting unit configured to predict a auto-ignition timing based on the auto-ignition delay; a completion predicting unit configured to predict a combustion completion timing of the fuel gas; and an operation control unit configured to control an engine based on a result of comparison between the auto-ignition timing and the combustion completion timing.
    Type: Grant
    Filed: March 5, 2020
    Date of Patent: August 10, 2021
    Assignee: IHI CORPORATION
    Inventors: Yutaka Masuda, Takahide Aoyagi, Takayuki Hirose, Takayuki Yamada, Hayato Nakajima
  • Patent number: 11084018
    Abstract: A catalytic reactor includes: a reaction-side flow channel in which a reaction fluid flows; structured catalysts accommodated in the reaction-side flow channel. Each structured catalyst includes inclined surfaces in at least part of each of two surfaces facing other structured catalysts. The inclined surfaces are inclined in the same direction with respect to an arrangement direction of the structured catalysts.
    Type: Grant
    Filed: September 24, 2019
    Date of Patent: August 10, 2021
    Assignee: IHI CORPORATION
    Inventor: Takuya Yoshinoya
  • Patent number: 11078830
    Abstract: A multi-stage turbocharger includes a turbine housing including a first sub-housing that has a first turbine-wheel chamber and a second sub-housing that has a second turbine-wheel chamber arranged in series to the first turbine-wheel chamber, a first compressor housing coupled to the turbine housing via a first bearing housing, and a second compressor housing coupled to the turbine housing via a second bearing housing. The first sub-housing and the second sub-housing are formed integrally with each other.
    Type: Grant
    Filed: November 5, 2019
    Date of Patent: August 3, 2021
    Assignee: IHI Corporation
    Inventors: Kiyomichi Ichikawa, Yoshimitsu Matsuyama, Munehiro Yoshida
  • Patent number: 11083105
    Abstract: A heat radiator for an aircraft, which cools a heat source installed in the aircraft, includes a heat radiating part in which a contact surface comes into contact with a main flow, the contact surface being formed with a concave portion or a convex portion in which a surface thereof directed upstream in a flow direction of the main flow is curved in a plan view.
    Type: Grant
    Filed: April 9, 2019
    Date of Patent: August 3, 2021
    Assignees: IHI Corporation, National University Corporation Tokyo University of Agriculture and Technology
    Inventors: Yoji Okita, Akira Murata
  • Patent number: 11078794
    Abstract: Disclosed is a method of manufacturing an airfoil structure. The airfoil structure includes a plurality of airfoils, a support for supporting the airfoils, and a case for covering the airfoils. Each airfoil includes an airfoil body, and an airflow generator for producing induced airflow by generating plasma. The method includes a process of forming the airflow generator that includes a first electrode forming step of forming a first electrode on the airfoil body, a dielectric layer forming step of forming a dielectric layer on the airfoil body by forming ceramic powder into a film to cover the first electrode through room temperature impact consolidation, and a second electrode forming step of forming a second electrode on a surface of the dielectric layer, such that the second electrode is electrically connected to the first electrode, and an alternating-current voltage is applied to the second electrode.
    Type: Grant
    Filed: July 24, 2018
    Date of Patent: August 3, 2021
    Assignee: IHI Corporation
    Inventors: Norio Asaumi, Nozomi Tanaka, Junya Kouwa, Kaoru Inoue
  • Patent number: 11078563
    Abstract: A TiAl alloy for forging, contains 41 at % or more and 44 at % or less of Al, 4 at % or more and 6 at % or less of Nb, 4 at % or more and 6 at % or less of V, 0.1 at % or more and 1 at % or less of B, and the balance being Ti and inevitable impurities.
    Type: Grant
    Filed: December 7, 2018
    Date of Patent: August 3, 2021
    Assignee: IHI Corporation
    Inventors: Keiji Kubushiro, Satoshi Takahashi
  • Publication number: 20210230715
    Abstract: A metal titanium production apparatus includes: a reductor that subjects titanium tetrachloride to a reduction process in presence of bismuth and magnesium to obtain a liquid alloy containing titanium and the bismuth; a segregator that subjects the liquid alloy to a segregation process to obtain a precipitate; and a distillator that subjects the precipitate to a distillation process to obtain metal titanium, and the distillator sets an atmosphere so as to preferentially vaporize the bismuth attached to the precipitate and then sets the atmosphere so as to vaporize the bismuth forming the precipitate.
    Type: Application
    Filed: April 25, 2019
    Publication date: July 29, 2021
    Applicants: KYOTO UNIVERSITY, IHI CORPORATION
    Inventors: Tetsuya UDA, Yoshinobu KUNITOMO, Akihiro KISHIMOTO, Kazuhiro KUMAMOTO, Akihiro SATO, Yasushi DODO, Takuya HASHIMOTO, Akihiko YOSHIMURA
  • Publication number: 20210229817
    Abstract: An energy recovery device for an aircraft includes: a turbine that is provided between a cabin of the aircraft and an opening for discharging cabin discharge air from the cabin to the outside of the aircraft and is operated by only the cabin discharge air; and a power generator that is driven by the turbine.
    Type: Application
    Filed: April 15, 2021
    Publication date: July 29, 2021
    Applicant: IHI Corporation
    Inventors: Naoki SEKI, Hirotaka SUGAWARA, Yasunori NIHEI, Hitoshi OYORI