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公开(公告)号：US10400617B2
公开(公告)日：2019-09-03
申请号：US15112464
申请日：2014-02-28
发明人： Yoji Akiyama , Hiroshi Suzuki , Makoto Ozaki
摘要： An object is to provide a sheet-metal turbine housing free from a risk of damage to a turbine housing even if the turbine housing connected to an exhaust-gas inlet duct part is heated, and from a risk of leakage of exhaust gas through a gap between the exhaust-gas inlet duct part and the turbine housing. A sheet-metal turbine housing includes: a scroll part formed from sheet metal and forming an exhaust gas passage of a spiral shape; an exhaust-gas inlet duct part engaged with an inlet end portion of the scroll part formed into a tubular shape, for introducing exhaust gas into the exhaust gas passage of the scroll part; and a seal unit disposed on an engagement section at which the inlet end portion of the scroll part and the exhaust-gas inlet duct part engage with each other, to close an annular gap formed at the engagement section.
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公开(公告)号：US20190234422A1
公开(公告)日：2019-08-01
申请号：US16311406
申请日：2016-12-16
发明人： Tsuyoshi KITAMURA , Toyotaka YOSHIDA , Toru HOSHI , Motoki EBISU
CPC分类号： F04D29/4206 , F02B39/00 , F05D2240/14
摘要： 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.
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公开(公告)号：US20190234237A1
公开(公告)日：2019-08-01
申请号：US16311285
申请日：2017-09-28
CPC分类号： F01D25/145 , F01D25/24 , F02B39/00 , F05D2220/40 , F05D2240/70 , F05D2260/231
摘要： 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.
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公开(公告)号：US10364689B2
公开(公告)日：2019-07-30
申请号：US15314688
申请日：2014-08-28
摘要： An expansion turbine including a turbine housing, a plurality of variable nozzles inside the turbine housing at intervals in a circumferential direction of the expansion turbine, the variable nozzles being configured to be rotatable about a rotation shaft, and a turbine wheel disposed rotatably inside the turbine housing, the turbine wheel including a plurality of turbine blades disposed downstream of the variable nozzles. The turbine housing has a first wall surface which faces tips of the turbine blades, and a second wall surface which faces the first wall surface across a flow path of the working fluid. A blade height of the variable nozzles at an outlet side is greater than a blade height of the turbine blades at an inlet side.
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公开(公告)号：US10330152B2
公开(公告)日：2019-06-25
申请号：US15114156
申请日：2014-02-27
摘要： An object is to provide a floating bush bearing device including a circumferential groove over the entire circumference of an outer peripheral surface of a floating bush while ensuring that a pressing force is applied by lubricant oil to the floating bush to reduce oscillation, as well as a turbocharger provided with the bearing device. A floating bush bearing device includes: a rotary shaft disposed rotatably inside a bearing hole of a casing; a floating bush surrounding the rotary shaft; an oil-feed hole of lubricant oil having an opening on an inner peripheral surface of the bearing hole; a plurality of communication holes formed on the floating bush, each extending between an inner peripheral surface and an outer peripheral surface of the floating bush, and disposed at intervals in a circumferential direction of the floating bush; and a circumferential groove formed on the outer peripheral surface of the floating bush or the inner peripheral surface of the bearing hole and extending over an entire circumference of the outer peripheral surface of the floating bush or the inner peripheral surface of the bearing hole, the circumferential groove passing through openings of the plurality of communication holes or facing the openings of the plurality of communication holes. The circumferential groove has a cross-sectional area which varies in accordance with a circumferential position.
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公开(公告)号：US20190162092A1
公开(公告)日：2019-05-30
申请号：US16313417
申请日：2016-06-30
摘要： 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 temperature increase process to control the temperature increase unit after completion of the first temperature increase process so as to increase the temperature of the DOC to a second temperature higher than the first temperature.
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公开(公告)号：US10288112B2
公开(公告)日：2019-05-14
申请号：US15541173
申请日：2015-02-10
摘要： A floating-bush bearing device (1) for rotatably supporting a rotational shaft (2), includes: a floating bush (3) having a cylindrical shape and including a bearing hole (33) into which the rotational shaft (2) is to be inserted; and a bearing housing (4) which rotatably houses the floating bush (3). At least one of an inner peripheral surface (31) of the floating bush (3), an outer peripheral surface (32) of the floating bush (3), or an inner peripheral surface (41) of the bearing housing (4) includes, in a cross section in an axial direction thereof, a plurality of land portions (311, 321, 411) having a true arc shape which is a part of a true circular shape, and a plurality of recess portions (312, 322, 412) being disposed at a position recessed from the land portions, the recess portions being configured such that a distance between the recess portions and a virtual true circular line (31a, 32a, 41a) passing through the land portions increases in a direction opposite from a rotational direction of the rotational shaft (2) from end portions (311b, 321b, 411b) of the land portions opposite from the rotational direction of the rotational shaft.
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68.发明申请公开(公告)号：US20190136694A1
公开(公告)日：2019-05-09
申请号：US16082855
申请日：2016-03-31
发明人： Toyotaka YOSHIDA , Toru HOSHI , Yosuke DAMMOTO , Yoji AKIYAMA
摘要： A turbine wheel (12) is provided with: a disc (22) provided so as to be capable of rotating about a center axis (C); and a plurality of blades (23) provided to a disc surface (22f) at intervals in a circumferential direction, the blades (23) causing a gas guided in from radially outward leading edges (23f) to be expelled from trailing edges (23r) disposed on one side of each of the blades along the direction of the center axis (C). In each of the blades (23), in an area on one side along the direction of the center axis (C) including the trailing edge (23r), there is provided a concave surface (27) in which a positive-pressure surface (23p) on the rear side in a rotational direction (R) is recessed forward in the rotational direction (R), causing the gas to be dispersed entirely in the radial direction of the blade (23).
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69.发明申请公开(公告)号：US20190072028A1
公开(公告)日：2019-03-07
申请号：US16079847
申请日：2016-03-07
发明人： Yusuke YASHIRO , Yoshihiro HAYASHI , Byeongil AN , Yuuji WAKAI
摘要： This control device starts, an electric motor on the basis of a drive signal. After starting of the electric motor, the control device switches a bypass valve from an open state to a closed state.
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70.发明授权公开(公告)号：US10174670B2
公开(公告)日：2019-01-08
申请号：US15113137
申请日：2014-02-25
发明人： Byeongil An , Hiroshi Suzuki
IPC分类号： F02B33/44 , F02B33/00 , F02B37/12 , F02B37/04 , F04D17/12 , F04D25/06 , F02B33/40 , F02B39/10 , F04D27/00 , F04D29/28
摘要： A multi-stage electric centrifugal compressor and a supercharging system for an internal combustion engine with a driving unit of a rotational shaft that can be readily controlled when a single-shaft and two-stage centrifugal compressor is employed is provided. A multi-stage electric centrifugal compressor includes: an electric motor; and a pair of centrifugal compressors coupled to either side of the electric motor, the pair of centrifugal compressors comprising a low-pressure stage compressor and a high-pressure stage compressor connected in series. The low-pressure stage compressor and the high-pressure stage compressor are formed to have different pressure ratios from each other.
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