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公开(公告)号：US10352232B2
公开(公告)日：2019-07-16
申请号：US15233063
申请日：2016-08-10
申请人： IHI Corporation
发明人： Yutaka Uneura , Yuichi Daito , Hideyuki Kojima , Tomomi Sugiura
摘要： A turbocharger includes: a shaft provided with a small-diameter portion, and two large-diameter portions formed on two sides of the small-diameter portion; and a semi-floating bearing to rotatably support the shaft. The semi-floating bearing includes a cylindrical body into which the shaft is inserted. An inner peripheral surface of the body includes: two bearing surfaces opposed to the large-diameter portions of the shaft; a non-bearing surface located between the two bearing surfaces, having a larger inner diameter than inner diameters of the bearing surfaces; and an oil passage opened to the non-bearing surface to supply lubricant oil to a gap in a radial direction between the non-bearing surface and the shaft. At least one of the two bearing surfaces extends more in an approaching direction of the two bearing surfaces than does the large-diameter portion opposed in the radial direction to the one bearing surface.
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公开(公告)号：US20180266432A1
公开(公告)日：2018-09-20
申请号：US15988793
申请日：2018-05-24
申请人： IHI Corporation
发明人： Yutaka Uneura , Kenji Bunno , Yuichi Daito , Shinichi Kaneda , Kenichi Segawa , Atsushi Tezuka
摘要： Provided is a mounting structure, including: an impeller including: a main body portion having a through hole; a plurality of blades provided to an outer peripheral surface of the main body portion; and a boss portion, which is a part of the main body portion, and protrudes toward one end side of the shaft with respect to the plurality of blades; a small-diameter portion, which is a part of the shaft; a first large-diameter portion, which is a part of the shaft, is located on another end side of the shaft with respect to the small-diameter portion; and a small-inner-diameter portion of the through hole, which is formed on a radially inner side of the boss portion, and has an inner diameter smaller than an inner diameter of a part of the through hole which is opposed to the first large-diameter portion in a radial direction.
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公开(公告)号：US20140219777A1
公开(公告)日：2014-08-07
申请号：US14164581
申请日：2014-01-27
申请人： IHI Corporation
发明人： Yutaka UNEURA , Yuichi Daito , Tomohiro Inoue
IPC分类号： F01D25/18
CPC分类号： F01D25/186 , F01D25/125 , F01D25/18 , F05D2220/40 , F16C17/02 , F16C17/18 , F16C2360/24
摘要： A turbocharger includes: a turbocharger main body; a bearing hole formed in the turbocharger main body; a turbine shaft rotatably inserted into the bearing hole and having a turbine wheel provided on one end and a compressor wheel provided on the other end; a turbine-side bearing part and a compressor-side bearing part rotatably supporting the turbine shaft and disposed in the bearing hole on a relatively turbine wheel side and on a relatively compressor wheel side, respectively; a cooling oil passage provided radially outside the bearing hole in the turbocharger main body and configured to cool the turbocharger main body with lubricating oil circulated inside; a first oil duct configured to guide lubricating oil after lubricating the compressor-side bearing part to the cooling oil passage; and a second oil duct configured to guide lubricating oil after lubricating the turbine-side bearing part to the cooling oil passage.
摘要翻译： 涡轮增压器包括：涡轮增压器主体; 形成在所述涡轮增压器主体中的轴承孔; 涡轮轴可旋转地插入到轴承孔中并且具有设置在一端的涡轮机叶轮和设置在另一端的压缩机叶轮; 涡轮机侧轴承部和压缩机侧轴承部，其分别可旋转地支撑涡轮轴并且分别设置在相对涡轮机侧和相对压缩机侧的轴承孔中; 冷却油通道，其设置在所述涡轮增压器主体的径向外侧的轴承孔的外侧，并且构造为通过内部循环的润滑油来冷却所述涡轮增压器主体; 第一油管，其构造成在将所述压缩机侧轴承部润滑后导向所述冷却油通路的润滑油; 以及第二油路，其构造成在将所述涡轮机侧轴承部润滑到所述冷却油路之后引导润滑油。
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公开(公告)号：US10598184B2
公开(公告)日：2020-03-24
申请号：US15679938
申请日：2017-08-17
申请人： IHI Corporation
发明人： Yutaka Uneura , Tomomi Otani , Yuichi Daito
IPC分类号： F04D29/051 , F04D29/057 , F04D29/063 , F01D25/16 , F01D25/18 , F16C27/02 , F16C17/10 , F16C33/10 , F04D25/02 , F02B39/14
摘要： A turbocharger includes: a bearing provided in a turbocharger body, and configured to rotatably support a turbine shaft in an insertion hole formed in the bearing; and an opposing portion which faces an end surface of the bearing in an axial direction of the turbine shaft. An end-surface guide portion is provided to any one of an opposing surface of the bearing which faces the opposing portion, and an opposing surface of the opposing portion which faces the bearing. The end-surface guide portion configured to make the insertion hole and an outer peripheral edge of the end surface of the bearing in radial directions of the turbine shaft communicate with each other extends forward in a rotational direction of the turbine shaft from a part of the end surface of the bearing which communicates with the insertion hole.
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公开(公告)号：US20180156269A1
公开(公告)日：2018-06-07
申请号：US15885931
申请日：2018-02-01
申请人： IHI Corporation
发明人： Kenji Bunno , Yutaka Uneura , Shinichi Kaneda , Yuichi Daito , Hideyuki Kojima , Tomomi Sugiura , Shunsuke Nishii
摘要： A bearing structure includes: a housing; a bearing hole formed in the housing and provided with a bearing for pivotally supporting a shaft; a clearance groove provided in the bearing hole, having an opposing wall portion radially opposed to the shaft, and communicating with an oil drainage passage provided below a shaft center of the shaft; and at least one of a narrow portion or a wide portion in the opposing wall portion of the clearance groove with a boundary right above the shaft center of the shaft, the narrow portion provided in a rear side in a rotation direction of the shaft, the narrow portion having a narrower gap from the shaft than that in a front side in the rotation direction of the shaft, the wide portion provided in the front side in the rotation direction of the shaft, the wide portion having a wider gap from the shaft than that in the rear side in the rotation direction of the shaft.
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公开(公告)号：US20180156065A1
公开(公告)日：2018-06-07
申请号：US15886361
申请日：2018-02-01
申请人： IHI Corporation
发明人： Kenji BUNNO , Yutaka Uneura , Shinichi Kaneda , Yuichi Daito , Hideyuki Kojima , Tomomi Sugiura , Shunsuke Nishii
摘要： A bearing structure includes: a housing; a bearing hole, which is formed in the housing, and receives a bearing configured to axially support a shaft having one end provided with an impeller; a clearance groove, which is formed in an inner circumferential surface of the bearing hole, and communicates with a passage formed on a lower side of the shaft; and an inclined portion formed on an inner wall surface of the clearance groove, which is positioned at least above the shaft.
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公开(公告)号：US10753367B2
公开(公告)日：2020-08-25
申请号：US15988793
申请日：2018-05-24
申请人： IHI Corporation
发明人： Yutaka Uneura , Kenji Bunno , Yuichi Daito , Shinichi Kaneda , Kenichi Segawa , Atsushi Tezuka
IPC分类号： F04D29/26 , F01D5/02 , F02B39/00 , F04D29/053 , F04D29/00
摘要： Provided is a mounting structure, including: an impeller including: a main body portion having a through hole; a plurality of blades provided to an outer peripheral surface of the main body portion; and a boss portion, which is a part of the main body portion, and protrudes toward one end side of the shaft with respect to the plurality of blades; a small-diameter portion, which is a part of the shaft; a first large-diameter portion, which is a part of the shaft, is located on another end side of the shaft with respect to the small-diameter portion; and a small-inner-diameter portion of the through hole, which is formed on a radially inner side of the boss portion, and has an inner diameter smaller than an inner diameter of a part of the through hole which is opposed to the first large-diameter portion in a radial direction.
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公开(公告)号：US10480575B2
公开(公告)日：2019-11-19
申请号：US15885931
申请日：2018-02-01
申请人： IHI Corporation
发明人： Kenji Bunno , Yutaka Uneura , Shinichi Kaneda , Yuichi Daito , Hideyuki Kojima , Tomomi Sugiura , Shunsuke Nishii
摘要： A bearing structure includes: a housing; a bearing hole formed in the housing and provided with a bearing for pivotally supporting a shaft; a clearance groove provided in the bearing hole, having an opposing wall portion radially opposed to the shaft, and communicating with an oil drainage passage provided below a shaft center of the shaft; and at least one of a narrow portion or a wide portion in the opposing wall portion of the clearance groove with a boundary right above the shaft center of the shaft, the narrow portion provided in a rear side in a rotation direction of the shaft, the narrow portion having a narrower gap from the shaft than that in a front side in the rotation direction of the shaft, the wide portion provided in the front side in the rotation direction of the shaft, the wide portion having a wider gap from the shaft than that in the rear side in the rotation direction of the shaft.
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公开(公告)号：US10393170B2
公开(公告)日：2019-08-27
申请号：US15886302
申请日：2018-02-01
申请人： IHI Corporation
发明人： Kenji Bunno , Yutaka Uneura , Shinichi Kaneda , Yuichi Daito , Hideyuki Kojima , Tomomi Sugiura , Shunsuke Nishii
IPC分类号： F16C17/10 , F16C33/06 , F16C43/02 , F16C33/74 , F02B37/00 , F01D25/18 , F02B39/14 , F16C32/06 , F16C33/10
摘要： A bearing structure includes: a housing; a bearing hole formed in the housing; a bearing, which is provided in the bearing hole, and is configured to axially support a shaft having one end provided with a turbine impeller; a space, which is formed in the housing, and is positioned between the impeller and the bearing hole; a passage, which communicates with the space, and extends to a vertically lower side of the bearing hole; a communication opening portion, which allows the passage and the bearing hole to communicate with each other; and a lower wall portion, which is provided in a lower portion including a portion directly below an axis of the shaft between the passage and the bearing hole, and has an inner wall surface being opposed to the shaft and having a curved surface shape with a curvature center positioned on the shaft side.
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公开(公告)号：US10669891B2
公开(公告)日：2020-06-02
申请号：US15886361
申请日：2018-02-01
申请人： IHI Corporation
发明人： Kenji Bunno , Yutaka Uneura , Shinichi Kaneda , Yuichi Daito , Hideyuki Kojima , Tomomi Sugiura , Shunsuke Nishii
IPC分类号： F01D25/16 , F16C35/02 , F16C17/18 , F16C17/04 , F16C33/10 , F01D25/00 , F02B39/14 , F01D9/06 , F01D25/18
摘要： A bearing structure includes: a housing; a bearing hole, which is formed in the housing, and receives a bearing configured to axially support a shaft having one end provided with an impeller; a clearance groove, which is formed in an inner circumferential surface of the bearing hole, and communicates with a passage formed on a lower side of the shaft; and an inclined portion formed on an inner wall surface of the clearance groove, which is positioned at least above the shaft.
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