Patents by Inventor Motoki Ebisu

Motoki Ebisu 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: 10954818
    Abstract: A turbocharger includes: a rotating shaft which extends along an axis; a turbine wheel which is provided on one end side of the rotating shaft; a compressor wheel which is provided on the other end side of the rotating shaft; a rolling bearing which includes an inner race fixed to an outer circumferential surface of the rotating shaft, an outer race surrounding the inner race from an outside in a radial direction, and rolling bodies arranged between the inner race and the outer race and rotatably supports the rotating shaft around the axis; a housing which covers the rolling bearing from an outer circumferential side with a gap between the housing and an outer circumferential surface of the rolling bearing; and a plurality of lubricating oil supply lines through which lubricating oil is supplied to different locations in the housing at different state quantities.
    Type: Grant
    Filed: December 4, 2015
    Date of Patent: March 23, 2021
    Assignee: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Yoshitomo Noda, Motoki Ebisu, Hiroshi Suzuki
  • Patent number: 10954816
    Abstract: A turbocharge includes: a compressor wheel; a turbine wheel configured to rotate with the compressor wheel; a turbine housing disposed so as to cover the turbine wheel; a bearing supporting a rotational shaft of the turbine wheel rotatably; and a bearing housing accommodating the bearing. One of the turbine housing or the bearing housing includes a fin portion protruding toward the other one of the turbine housing or the bearing housing so as to extend along an axial direction of the rotational shaft, and, between the turbine housing and the bearing housing, a cavity is formed on each side of the fin portion with respect to a radial direction of the rotational shaft.
    Type: Grant
    Filed: September 28, 2017
    Date of Patent: March 23, 2021
    Assignee: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Tsuyoshi Kitamura, Seiichi Ibaraki, Toyotaka Yoshida, Hiroshi Suzuki, Motoki Ebisu
  • Patent number: 10941701
    Abstract: The supercharging system and the internal combustion engine according to the present invention are provided with: a first supercharger (20); a second supercharger (30); an electric motor (23) connected to a shaft end of a first compressor (21); a generator (24) connected to a shaft end of a first turbine (22); a bypass exhaust pipe (L6) that allows exhaust air to bypass the first turbine (22); a cooler (51) that cools the generator (24); and a control device (50) that activates the cooler (51) when the generator (24) is driven by exhaust air that has driven the first turbine (22).
    Type: Grant
    Filed: July 15, 2016
    Date of Patent: March 9, 2021
    Assignee: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Yukio Yamashita, Byeongil An, Motoki Ebisu
  • 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: 20200370470
    Abstract: Provided are an exhaust bypass device and a turbocharger. The present invention is provided with: an actuator (31) for reciprocating a driving-rod (41) in the axial direction; a support shaft (34) rotatably supported in a housing (46); a connection link (33) having one end portion and the other end portion, wherein the one end portion is rotatably connected to a tip portion of the driving-rod (41), and the other end portion is fixed to one end portion in the axial direction of the support shaft (34); a waste gate valve (36) connected to the other end portion in the axial direction of the support shaft (34); and a compressive coil spring (61) disposed between the housing (46) and the connection link (33), and having a coil diameter that varies along the axial direction.
    Type: Application
    Filed: March 30, 2017
    Publication date: November 26, 2020
    Applicant: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Takeshi YOSHIMI, Tatsuya ISHIZAKI, Noriyuki HAYASHI, Yukihide NAGAYO, Eigo KATOU, Motoki EBISU, Ko YAMAGUCHI, Ryoji SHIGETA
  • Publication number: 20200370471
    Abstract: Provided are an exhaust bypass device and a turbocharger. The present invention is provided with: an actuator for reciprocating a driving-rod in the axial direction; a support shaft rotatably supported in a housing; a connection link having one end portion and the other end portion, wherein the one end portion is rotatably connected by a connection member to a tip portion of a connection rod connected to the driving-rod, and the other end portion is fixed to one end portion in the axial direction of the support shaft; and a waste gate valve connected to the other end portion in the axial direction of the support shaft. The present invention is also provided with: a connection shaft provided in the connection link as the connection member; and a bearing block provided in the connection rod and serving as a bearing member that rotatably supports a plurality of different parts in an axial direction of the connection shaft.
    Type: Application
    Filed: March 30, 2017
    Publication date: November 26, 2020
    Applicant: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Takeshi YOSHIMI, Tatsuya ISHIZAKI, Noriyuki HAYASHI, Motoki EBISU
  • Patent number: 10731491
    Abstract: Bolt holes 16 are formed in a joint part 14 of a turbine housing 12, with flanged bolts 40 screwed in the bolt holes 16. A flange part 32 of a bearing housing 30 is sandwiched between bearing surfaces 44a of the flanged bolts 40 and an inner end face 14b of the joint part 14. A sealing ring 48 is interposed in an annular space s. Before the flanged bolts 40 are fastened, there is formed a height difference G equivalent to a compression allowance h for the sealing ring 48, between an outer end face 60a of the joint part 14 and a bolt receiving surface 32a of the flange part 32. The flanged bolts 40 are screwed into the bolt holes 16 until the bearing surfaces 44a make tight contact with the outer end face 60a so as to resiliently deform the sealing ring 48.
    Type: Grant
    Filed: July 27, 2016
    Date of Patent: August 4, 2020
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Shingo Shudo, Daigo Watanabe, Takumi Tokiyoshi, Motoki Ebisu
  • Patent number: 10683798
    Abstract: The present invention provides a turbocharger including: a rotating shaft; a turbine wheel; a compressor wheel; a rolling bearing including an inner race fixed to an outer circumferential surface of the rotating shaft, an outer race surrounding the inner race from the outside in a radial direction, and rolling bodies arranged between the inner and outer races and that supports the rotating shaft to be rotatable about an axis; a housing that covers the rolling bearing from an outer circumferential side via a gap between the housing and an outer circumferential surface of the rolling bearing; and a lubricant supply line configured to supply a lubricant into the housing. The turbocharger includes an operating state detection unit that detects an operating state of the turbocharger and a lubricant regulating unit configured to regulate the flow rate of the lubricant flowing through the lubricant supply line depending on the operating state.
    Type: Grant
    Filed: December 4, 2015
    Date of Patent: June 16, 2020
    Assignee: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Yoshitomo Noda, Motoki Ebisu, Hiroshi Suzuki
  • Patent number: 10590838
    Abstract: A supercharger includes a first introduction part having a first flow channel; a second introduction part having a second flow channel; a chamber into which the exhaust gas is introduced; an outlet part having one or a plurality of outlet flow channels; and a valve member housed in the chamber. The chamber has a first introduction port that leads to the first flow channel, a second introduction port that leads to the second flow channel, and one or a plurality of outlet ports that lead to the outlet flow channel. A main circulation space is secured. The valve member is capable of opening or closing, and allows two or more opened ports among the first introduction port, the second introduction port, and the outlet port to communicate with each other through the main circulation space.
    Type: Grant
    Filed: February 28, 2017
    Date of Patent: March 17, 2020
    Assignee: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Mark Rankenberg, Maik Schram, Jochem Hooijer, Rogier Schimmel, Yosuke Dammoto, Motoki Ebisu, Toru Hoshi
  • Patent number: 10539074
    Abstract: A turbocharger includes a rotating shaft which extends along an axial line thereof, a turbine rotor which is provided on one end side of the rotating shaft, a compressor rotor which is provided on the other end side of the rotating shaft, a roller bearing which rotatably supports the rotating shaft around the axis line between the turbine rotor and the compressor rotor, a housing which covers the roller bearing from an outer peripheral side of the roller bearing, and a tubular sleeve which is provided inside the housing, which is disposed on an outer peripheral side of an outer ring of the roller bearing with a gap for holding a lubricant between the sleeve and the outer ring, and at least part of which is formed of a damping material.
    Type: Grant
    Filed: April 15, 2015
    Date of Patent: January 21, 2020
    Assignee: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Yoshitomo Noda, Motoki Ebisu
  • Patent number: 10473207
    Abstract: An oil-drain device for a thrust bearing includes: a rotor shaft; a collar member mounted to an outer periphery of the rotor shaft; a thrust bearing supporting the rotor shaft in an axial direction; and an oil-drain space forming member defining an oil-drain space through which lubricant oil leaking from a sliding portion of the thrust bearing flows, between the thrust bearing and the oil-drain space forming member. The oil-drain space includes: an oil-drain channel defined between a first end surface of the thrust bearing and a first end surface of the oil-drain space forming member, surrounding the flange portion of the collar member; and an oil-drain port formed below the oil-drain channel, for discharging the lubricant oil flowing through the oil-drain channel outside the oil-drain space.
    Type: Grant
    Filed: December 18, 2014
    Date of Patent: November 12, 2019
    Assignee: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Tadasuke Nishioka, Yosuke Danmoto, Isao Tomita, Takashi Nambu, Yoji Akiyama, Yuya Kojima, Tatsuya Ishizaki, Seigi Yano, Takaya Futae, Motoki Ebisu
  • Publication number: 20190234422
    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: Application
    Filed: December 16, 2016
    Publication date: August 1, 2019
    Applicant: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Tsuyoshi KITAMURA, Toyotaka YOSHIDA, Toru HOSHI, Motoki EBISU
  • Publication number: 20190234304
    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: Application
    Filed: December 16, 2016
    Publication date: August 1, 2019
    Applicant: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Tsuyoshi KITAMURA, Toyotaka YOSHIDA, Toru HOSHI, Motoki EBISU
  • Publication number: 20190234237
    Abstract: A turbocharge includes: a compressor wheel; a turbine wheel configured to rotate with the compressor wheel; a turbine housing disposed so as to cover the turbine wheel; a bearing supporting a rotational shaft of the turbine wheel rotatably; and a bearing housing accommodating the bearing. One of the turbine housing or the bearing housing includes a fin portion protruding toward the other one of the turbine housing or the bearing housing so as to extend along an axial direction of the rotational shaft, and, between the turbine housing and the bearing housing, a cavity is formed on each side of the fin portion with respect to a radial direction of the rotational shaft.
    Type: Application
    Filed: September 28, 2017
    Publication date: August 1, 2019
    Applicant: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Tsuyoshi KITAMURA, Seiichi IBARAKI, Toyotaka YOSHIDA, Hiroshi SUZUKI, Motoki EBISU
  • Publication number: 20190048791
    Abstract: A supercharger includes a first introduction part having a first flow channel; a second introduction part having a second flow channel; a chamber into which the exhaust gas is introduced; an outlet part having one or a plurality of outlet flow channels; and a valve member housed in the chamber. The chamber has a first introduction port that leads to the first flow channel, a second introduction port that leads to the second flow channel, and one or a plurality of outlet ports that lead to the outlet flow channel. A main circulation space is secured. The valve member is capable of opening or closing, and allows two or more opened ports among the first introduction port, the second introduction port, and the outlet port to communicate with each other through the main circulation space.
    Type: Application
    Filed: February 28, 2017
    Publication date: February 14, 2019
    Applicant: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Mark RANKENBERG, Maik SCHRAM, Jochem HOOIJER, Rogier SCHIMMEL, Yosuke DAMMOTO, Motoki EBISU, Toru HOSHI
  • Publication number: 20190048792
    Abstract: The supercharging system and the internal combustion engine according to the present invention are provided with: a first supercharger (20); a second supercharger (30); an electric motor (23) connected to a shaft end of a first compressor (21); a generator (24) connected to a shaft end of a first turbine (22); a bypass exhaust pipe (L6) that allows exhaust air to bypass the first turbine (22); a cooler (51) that cools the generator (24); and a control device (50) that activates the cooler (51) when the generator (24) is driven by exhaust air that has driven the first turbine (22).
    Type: Application
    Filed: July 15, 2016
    Publication date: February 14, 2019
    Applicant: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Yukio YAMASHITA, Byeongil AN, Motoki EBISU
  • Publication number: 20180363501
    Abstract: A turbocharger includes: a rotating shaft which extends along an axis; a turbine wheel which is provided on one end side of the rotating shaft; a compressor wheel which is provided on the other end side of the rotating shaft; a rolling bearing which includes an inner race fixed to an outer circumferential surface of the rotating shaft, an outer race surrounding the inner race from an outside in a radial direction, and rolling bodies arranged between the inner race and the outer race and rotatably supports the rotating shaft around the axis; a housing which covers the rolling bearing from an outer circumferential side with a gap between the housing and an outer circumferential surface of the rolling bearing; and a plurality of lubricating oil supply lines through which lubricating oil is supplied to different locations in the housing at different state quantities.
    Type: Application
    Filed: December 4, 2015
    Publication date: December 20, 2018
    Applicant: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Yoshitomo NODA, Motoki EBISU, Hiroshi SUZUKI
  • Publication number: 20180347455
    Abstract: The present invention provides a turbocharger including: a rotating shaft; a turbine wheel; a compressor wheel; a rolling bearing including an inner race fixed to an outer circumferential surface of the rotating shaft, an outer race surrounding the inner race from the outside in a radial direction, and rolling bodies arranged between the inner and outer races and that supports the rotating shaft to be rotatable about an axis; a housing that covers the rolling bearing from an outer circumferential side via a gap between the housing and an outer circumferential surface of the rolling bearing; and a lubricant supply line configured to supply a lubricant into the housing. The turbocharger includes an operating state detection unit that detects an operating state of the turbocharger and a lubricant regulating unit configured to regulate the flow rate of the lubricant flowing through the lubricant supply line depending on the operating state.
    Type: Application
    Filed: December 4, 2015
    Publication date: December 6, 2018
    Applicant: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Yoshitomo NODA, Motoki EBISU, Hiroshi SUZUKI
  • Patent number: 10148141
    Abstract: A motor rotor structure for an electric turbo charger is manufactured at low cost with good quality by fixedly fitting, over a shaft, a rotor core having electromagnetic steel sheets pre-formed as an integrated stack. The rotor structure includes a rotor core which is rotated by a magnetic field formed by a stator in a housing; a shaft configured to rotate a compressor impeller and the rotor core together; and a bearing supporting the shaft. The rotor includes the rotor core including the electromagnetic steel sheets; a stopper portion formed at an intermediate portion of the shaft to restrict axial movement of the rotor core; and a pressing unit which presses the rotor core fitted over the shaft against the stopper portion. The pressing unit prevents a circumferential phase shift between the shaft and the rotor core by a pressing force thereof.
    Type: Grant
    Filed: June 4, 2012
    Date of Patent: December 4, 2018
    Assignee: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Yukio Yamashita, Noriyuki Hayashi, Seiichi Ibaraki, Katsuyuki Osako, Motoki Ebisu, Byeongil An, Hiroshi Suzuki, Hideaki Arita, Takashi Goto, Toshihiko Miyake