Patents Assigned to MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
  • Publication number: 20210062751
    Abstract: An internal combustion engine with a turbocharger according to an embodiment includes a cylinder block internally including a plurality of cylinders, a cylinder head disposed on top of the cylinder block, and internally including a plurality of exhaust flow passages through which exhaust air discharged from each of the plurality of cylinders flows, and the turbocharger including a rotational shaft, a turbine wheel, and a compressor wheel, the turbine wheel being disposed at one end of the rotational shaft, the compressor wheel being disposed at the other end of the rotational shaft. At least the turbine wheel of the turbocharger is arranged inside the cylinder head.
    Type: Application
    Filed: January 29, 2018
    Publication date: March 4, 2021
    Applicant: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Takao YOKOYAMA, Makoto OZAKI
  • Patent number: 10934867
    Abstract: A stationary-blade-type rotating machine is provided with a rotational shaft, an impeller, an impeller housing having a scroll passage formed on an outer peripheral side of the impeller, a bearing housing connected to the impeller housing in an axial direction of the rotational shaft, a stationary blade disposed in a radial passage formed between the scroll passage and the impeller and defined by an impeller-housing-side member and a bearing-housing-side member which face each other in the axial direction of the rotational shaft. The fixation unit includes an annular circumferential groove formed in an inner peripheral surface of the impeller housing and a ring-shaped fitting member subjected to a force for expanding in a radial direction while being fitted into the circumferential groove. The fitting member is configured to press the stationary blade to the impeller housing via at least one of the impeller-housing-side member or the bearing-housing-side member.
    Type: Grant
    Filed: January 20, 2016
    Date of Patent: March 2, 2021
    Assignee: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Kazuya Takeda, Takashi Shiraishi, Kazuki Okuda, Takeshi Yoshimi, Toshimasa Igusa
  • Patent number: 10934887
    Abstract: A rotary machine include: a rotational shaft; an impeller mounted to the rotational shaft; an impeller housing accommodating the impeller; a bearing housing accommodating a bearing which supports the rotational shaft rotatably, the bearing housing being fastened to the impeller housing; and a fastening member fastening the impeller housing and the bearing housing in an axial direction of the rotational shaft. The impeller housing, the bearing housing, and the fastening member each includes a contact surface in a direction intersection with an axial direction of the rotational shaft. A thin-plate member formed separately from the impeller housing, the bearing housing, and the fastening member is interposed between at least two of the contact surfaces.
    Type: Grant
    Filed: March 30, 2016
    Date of Patent: March 2, 2021
    Assignee: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Yukihide Nagayo, Tomoaki Takeshita, Yosuke Dammoto, Shinji Ogawa
  • Publication number: 20210033103
    Abstract: A centrifugal compressor includes an impeller, a compressor inlet pipe for guiding air to the impeller, a scroll passage disposed on an outer peripheral side of the impeller, and a bypass passage connecting the compressor inlet pipe and the scroll passage and bypassing the impeller. In a cross-section perpendicular to an axis of the compressor inlet pipe, when A1 is a connection portion on a downstream side in a rotational direction of the impeller of connection portions between an inner wall surface of the compressor inlet pipe and an inner wall surface of the bypass passage, C is a virtual circle constituting the inner wall surface of the compressor inlet pipe, and L1 is a tangent line of the virtual circle C at the connection portion A1, the inner wall surface of the bypass passage is formed from the connection portion A1 along the tangent line L1.
    Type: Application
    Filed: July 13, 2018
    Publication date: February 4, 2021
    Applicant: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Yoshihiro HAYASHI, Yutaka FUJITA, Kenichiro IWAKIRI
  • Publication number: 20210033107
    Abstract: In a centrifugal compressor including an impeller rotatably disposed in a housing, the housing includes a shroud wall and a hub wall, which define a diffuser passage communicating with an outlet of the impeller. The diffuser flow passage includes a pinched part configured such that the shroud wall is closer to the hub wall radially outward of the centrifugal compressor from the outlet of the impeller, and a parallel part communicating with the pinched part on a radially outer side of the centrifugal compressor than the pinched part, the parallel part being configured such that the shroud wall and the hub wall are parallel to each other. The shroud wall has a surface facing the impeller and the hub wall, the surface having a cross-sectional shape where a tangent line exists at any position in a cross-section including an axis of the impeller.
    Type: Application
    Filed: April 4, 2018
    Publication date: February 4, 2021
    Applicant: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Yutaka FUJITA, Hironori HONDA, Nobuhito OKA
  • Patent number: 10907541
    Abstract: A turbine housing includes: a housing body which includes a turbine housing part housing a turbine wheel, an inlet section forming an inlet flow passage for guiding exhaust gas to the turbine housing part, an outlet section forming an outlet flow passage for discharging the exhaust gas from the turbine housing part, and a waste-gate flow passage which brings the inlet flow passage and the outlet flow passage into communication so as to bypass the turbine housing part; and a sleeve disposed along an inner wall surface of the housing body forming the waste gate flow passage, at least on a downstream side of the waste-gate flow passage of the housing body with respect to a flow direction of the exhaust gas.
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: February 2, 2021
    Assignee: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Tsuyoshi Kitamura, Toyotaka Yoshida, Toru Hoshi, Motoki Ebisu
  • Patent number: 10907649
    Abstract: A turbine housing includes: a housing body which is configured to accommodate a turbine wheel and which includes an inlet section forming an inlet flow passage for guiding exhaust gas to the turbine wheel, and an outlet section forming an outlet flow passage for discharging the exhaust gas from the turbine wheel; and at least one sleeve disposed along an inner wall surface of at least one of the inlet section or the outlet section of the housing body. The at least one sleeve includes a plurality of sections divided along a flow direction of the exhaust gas.
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: February 2, 2021
    Assignee: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Tsuyoshi Kitamura, Toyotaka Yoshida, Toru Hoshi, Motoki Ebisu
  • Publication number: 20210025403
    Abstract: On an inner circumferential surface (25a) of a housing (25) opposed to an outer circumferential surface (37a, 37b) of an outer ring, toward a front side in a rotation direction (B) of a rotation shaft (21), a first groove (41H, 41I) is formed as a groove portion for guiding an oil (39) in a direction toward a first oil supply hole (41D, 41E).
    Type: Application
    Filed: March 30, 2018
    Publication date: January 28, 2021
    Applicant: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Yoshitomo NODA, Kengo IMAOKA, Yukiho ISHIDA
  • Publication number: 20210018014
    Abstract: A rotor includes: a hub; and a plurality of blades disposed on the hub. Each of the plurality of blades has a suction surface, a pressure surface, a leading edge, a trailing edge, a tip-side edge, and a hub-side edge. The suction surface has a first curved surface portion curved convexly toward the trailing edge such that the trailing edge is inclined to a pressure surface side in a first region which is a partial region, in a blade height direction of the blade, of a region connected to the trailing edge.
    Type: Application
    Filed: June 22, 2018
    Publication date: January 21, 2021
    Applicant: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Kenichiro IWAKIRI, Nobuhito OKA, Hironori HONDA
  • Publication number: 20210017875
    Abstract: A turbomachinery according to an embodiment includes an impeller including at least one blade, and a casing for housing the impeller rotatably. A size of a gap between a tip of the blade and an inner surface of the casing during a stop of the impeller is formed non-uniformly over a circumferential direction of the impeller.
    Type: Application
    Filed: December 21, 2018
    Publication date: January 21, 2021
    Applicant: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Isao TOMITA, Reiko TAKASHIMA, Yutaka FUJITA
  • Patent number: 10895226
    Abstract: A turbocharger includes a gripping unit gripping a turbine-housing side flange portion and a bearing-housing side flange portion to couple a turbine housing and a bearing housing. In a state where the turbine housing and the bearing housing are coupled by the gripping unit, an elastic force in a direction to separate the turbine-housing side flange portion and the bearing-housing side flange portion from each other is applied to each of the turbine housing and the bearing housing.
    Type: Grant
    Filed: May 18, 2016
    Date of Patent: January 19, 2021
    Assignee: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Daigo Watanabe, Takao Yokoyama, Takashi Yoshimoto, Chikako Kato, Keigo Sakamoto, Yosuke Dammoto
  • Publication number: 20210013752
    Abstract: A rotary electric machine includes a housing, a stator disposed in the housing, and at least two support members disposed in at least two different parts, respectively, in an axial direction of the stator between the housing and an outer circumferential surface of the stator, the at least two support members supporting the stator against the housing. The at least two support members, the housing, and the outer circumferential surface of the stator form a space.
    Type: Application
    Filed: May 15, 2018
    Publication date: January 14, 2021
    Applicant: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Takaya FUTAE, Shunsuke YAKUSHIJI, Naomichi SHIBATA, Byeongil AN, Takaaki YOSHIZAWA
  • Patent number: 10890105
    Abstract: The present invention includes: a turbine wheel 24 that is attached to a rotating shaft 14 and that has a plurality of turbine blades in the circumferential direction; scroll passages 15Aa, 15Ab that are formed in a spiral shape on the outside of the turbine wheel 24, and that are formed by being divided into a plurality of sections in the circumferential direction, the passages communicating with each other at the position of the turbine wheel 24 disposed between respective tongue sections 15Ac, 15Ad; and threads 51 that are provided on an back facing surface 41 disposed so as to oppose the back surface of the turbine wheel 24, the back surface being on the axially opposite side from the turbine blade side, and the linear parts extending from starting points 51a near the tongue sections 15Ac, 15Ad toward the rotating shaft 14 side so as to control the passage of fluid between the back surface and the back facing surface 41.
    Type: Grant
    Filed: February 28, 2017
    Date of Patent: January 12, 2021
    Assignee: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Reiko Takashima, Takao Yokoyama, Masaki Tojo
  • Patent number: 10890109
    Abstract: This turbocharger (10) comprises a turbine wheel (12), a compressor wheel (13), and a scroll flowpath (34) formed in a turbine housing (31), continuing in the circumferential direction on the radially outer side of the turbine wheel (12), and having gas flowing therethrough that rotates and drives the turbine wheel (12). The scroll flowpath (34) is formed such that: an inner circumferential inside wall surface (34c) on the turbine wheel (12) side is gradually displaced radially outwards, along the direction of gas flow; and the cross-sectional area of the flowpath gradually decreases.
    Type: Grant
    Filed: March 30, 2016
    Date of Patent: January 12, 2021
    Assignee: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Toyotaka Yoshida, Yosuke Dammoto, Yoji Akiyama
  • Patent number: 10890108
    Abstract: This exhaust gas bypass device and supercharger are provided with: an actuator (31) for moving a driving rod (41) reciprocally in the axial direction of the driving rod; a coupling rod (32) coupled to the tip section of the driving rod (41); a support shaft (34) rotatably supported on a housing; a coupling link (33), one end section of which is rotatably coupled to the tip section of the coupling rod (32) via a coupling shaft (45) and the other end section of which is fixed to the one end section of the support shaft (34); a waste gate valve (35) coupled to the other end section of the support shaft (34); and a damping member for damping displacement between the coupling rod (32) and the coupling link (33), whereby reliability is improved by ensuring desirable operative characteristics.
    Type: Grant
    Filed: March 7, 2017
    Date of Patent: January 12, 2021
    Assignee: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Yoshimi Kagimoto, Noriyuki Hayashi, Shigeyoshi Umeda
  • Patent number: 10883513
    Abstract: This compressor wheel (3) is provided with a disc (22) which is formed in a disc shape and provided to be rotatable around a central axis (C); and a plurality of blades (23) provided on a disc surface (22f) facing a first side in the central axis (C) direction with an interval in a circumferential direction around the central axis (C). A rear surface (22r) of the disc (22) facing a second side in the central axis (C) direction has a convex curved surface (25) which is convex toward the second side in the central axis (C) direction at least part of a center portion of the disc (22).
    Type: Grant
    Filed: March 30, 2016
    Date of Patent: January 5, 2021
    Assignee: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Yutaka Fujita, Tadashi Kanzaka, Hiroaki Yoshizawa
  • Patent number: 10883177
    Abstract: A plated plated fiber-reinforced member includes: a fiber-reinforced member formed of a composite fiber material in which multiple reinforcing fibers dispersed in a resin, some of the multiple reinforcing fibers being allowed so that portions thereof protruding from a surface of the resin; and an electroless-plated layer formed on the fiber-reinforced member to cover the surface of the resin and the portions of the reinforcing fibers protruded from the surface of the resin.
    Type: Grant
    Filed: March 25, 2016
    Date of Patent: January 5, 2021
    Assignee: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Kana Taniguchi, Ryoji Okabe, Hideyuki Minai
  • Publication number: 20200408142
    Abstract: A variable nozzle device includes: a first plate-shaped member having a first plate portion having an annular shape and being fixed to a bearing housing; a second plate-shaped member having a second plate portion which has an annular shape and which defines a nozzle flow passage between the first plate portion and the second plate portion, the second plate portion having a surface disposed so as to face the first plate portion and another surface disposed so as to face at least partially a scroll flow passage formed inside a turbine housing; at least one nozzle support having, with respect to an axial direction of the nozzle support, an end coupled to the first plate portion and another end coupled to the second plate portion; at least one nozzle vane rotatably supported between the first plate portion and the second plate portion; and a variable nozzle mechanism configured to change a vane angle of the at least one nozzle vane.
    Type: Application
    Filed: March 16, 2017
    Publication date: December 31, 2020
    Applicants: MITSUBISHI HEAVY INDUSTRIES, LTD., MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Keigo SAKAMOTO, Shigeyoshi SAKUMA, Eigo KATOU, Yosuke DAMMOTO, Yoji AKIYAMA, Nariaki SEIKE, Hiroyuki ARIMIZU
  • Patent number: 10871095
    Abstract: A regeneration control device controlling a temperature increase unit of an exhaust gas treatment device including a DOC disposed in an exhaust passage of a diesel engine to regenerate the exhaust gas treatment device includes: a DOC temperature-increase-necessary-state detection part detecting a temperature increase necessary state including at least one of a blockage state, detected on the basis of comparison between a blockage parameter related to blockage of the DOC and a predetermined blockage threshold, of the DOC or a blockage risk state, detected when the diesel engine is in an operating state that is likely to cause blockage of the DOC, of the DOC; and a DOC temperature increase execution part executing a DOC temperature increase control including: a first temperature increase process to control the temperature increase unit, if the temperature increase necessary state of the DOC is detected, so as to increase the temperature of the DOC to a first temperature at which the DOC activates; and a second
    Type: Grant
    Filed: June 30, 2016
    Date of Patent: December 22, 2020
    Assignee: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Kazuki Nishizawa, Tomohide Yamada, Daisuke Sato, Yasuhiro Hattori
  • Publication number: 20200386242
    Abstract: A compressor housing accommodating a compressor wheel for compressing intake air supplied to an engine has therein an outer cooling passage extending along a circumferential direction on an outer circumferential side of a scroll passage of a spiral shape through which the intake air compressed by the compressor wheel flows, and an inner cooling passage extending along the circumferential direction on an inner circumferential side of the scroll passage. The inner cooling passage is separated from the outer cooling passage by a separation wall extending along the circumferential direction.
    Type: Application
    Filed: October 12, 2017
    Publication date: December 10, 2020
    Applicant: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Takashi ARAI, Kenichiro IWAKIRI, Reiko TAKASHIMA