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1. 发明申请

US20230003231A1 COMPRESSOR AND TURBOCHARGER INCLUDING COMPRESSOR 有权
公开(公告)号：US20230003231A1
公开(公告)日：2023-01-05
申请号：US17782836
申请日：2019-12-17
申请人： MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
发明人： Yoshihiro HAYASHI
IPC分类号： F04D29/44 , F04D17/10 , F04D27/02 , F04D29/42
摘要： A compressor is provided with: an impeller a housing configured to rotatably house the impeller and having an intake passage for introducing a gas to the impeller from outside the housing, a scroll passage for guiding the gas having passed through the impeller to the outside, and a bypass passage connecting the intake passage and the scroll passage so as to bypass the impeller; and a bypass valve having a valve body disposed in the bypass passage and capable of opening and closing the bypass passage. The valve body is configured to, in a fully closed state, separate the bypass passage into an inlet-side passage having a communication port communicating with the scroll passage and an outlet-side passage communicating with the intake passage. An inlet-side passage wall surface which defines the inlet-side passage includes at least an upstream passage wall surface portion connected to an upstream end of the communication port in a cross-sectional view of the housing taken along an axis of the impeller. The upstream passage wall surface portion is configured such that an angle between the upstream passage wall surface portion and an upstream scroll wall surface of a scroll passage wall surface which defines the scroll passage connected to the upstream end is less than 90 degrees.

2. 发明申请

US20190072028A1 SUPERCHARGING SYSTEM, CONTROL DEVICE FOR SUPERCHARGING SYSTEM, CONTROL METHOD FOR SUPERCHARGING SYSTEM, AND PROGRAM 审中-公开
公开(公告)号：US20190072028A1
公开(公告)日：2019-03-07
申请号：US16079847
申请日：2016-03-07
申请人： MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
发明人： Yusuke YASHIRO , Yoshihiro HAYASHI , Byeongil AN , Yuuji WAKAI
IPC分类号： F02B37/04 , F02B37/16 , F02B39/10 , F02D41/00 , F02B37/24
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.

3. 发明申请

US20210164487A1 ROTOR AND CENTRIFUGAL COMPRESSOR INCLUDING THE SAME 有权
公开(公告)号：US20210164487A1
公开(公告)日：2021-06-03
申请号：US17048247
申请日：2018-06-11
申请人： MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
发明人： Yoshihiro HAYASHI , Yutaka FUJITA , Nobuhito OKA , Koichi TAKAHASHI , Hayato NISHI
IPC分类号： F04D29/28 , F04D17/10
摘要： A rotor includes: a hub; and a plurality of blades disposed on the hub. Each of the plurality of blades includes a suction surface, a pressure surface, a leading edge, a trailing edge, a tip-side edge, and a hub-side edge. In a cross-section of each blade at a given chord position between the leading edge and the trailing edge, an angle of at least one of the suction surface or the pressure surface with respect to a blade height direction of the blade increases in a direction from the hub-side edge to the tip-side edge over a region from the hub-side edge to the tip-side edge, in at least a range from the leading edge to a chord position away from the leading edge toward the trailing edge.

4. 发明申请

US20210108647A1 CENTRIFUGAL COMPRESSOR AND TURBOCHARGER 有权
公开(公告)号：US20210108647A1
公开(公告)日：2021-04-15
申请号：US16970560
申请日：2018-07-06
申请人： MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
发明人： Kenichiro IWAKIRI , Yutaka FUJITA , Yoshihiro HAYASHI
IPC分类号： F04D27/02 , F04D29/42 , F04D25/04 , F04D17/10
摘要： A centrifugal compressor includes: an impeller; a compressor inlet tube configured to guide air to the impeller; a scroll flow passage disposed on a radially outer side of the impeller; a bypass flow passage branching from the scroll flow passage via a branch port, the bypass flow passage connecting to the compressor inlet tube not via the impeller; and a bypass valve capable of opening and closing a valve port disposed in the bypass flow passage. The branch port has a non-circular shape when viewed along a normal N1 of the branch port passing through a center of the branch port.

5. 发明申请

US20200063749A1 CENTRIFUGAL COMPRESSOR AND TURBOCHARGER INCLUDING THE SAME 审中-公开
公开(公告)号：US20200063749A1
公开(公告)日：2020-02-27
申请号：US16609645
申请日：2017-11-06
申请人： MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
发明人： Kenichiro IWAKIRI , Yoshihiro HAYASHI , Seiichi IBARAKI
IPC分类号： F04D29/28
摘要： A centrifugal compressor includes an impeller rotatably disposed and having a plurality of first blades and a shroud cover disposed on a leading edge side of the first blades partially in a rotational axis direction of the impeller and connecting the first blades circumferentially adjacent to each other. The shroud cover is shaped such that a position of at least one of an upstream edge or a downstream edge of the shroud cover in the rotational axis direction changes along a circumferential direction of the shroud cover.

6. 发明申请

US20200173461A1 CENTRIFUGAL COMPRESSOR AND TURBOCHARGER INCLUDING THE SAME 审中-公开
公开(公告)号：US20200173461A1
公开(公告)日：2020-06-04
申请号：US16619415
申请日：2017-11-16
申请人： MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
发明人： Yoshihiro HAYASHI
IPC分类号： F04D29/44 , F04D17/10
摘要： A centrifugal compressor includes a housing which includes a scroll portion with a spiral scroll flow passage being formed on an outer peripheral side of an impeller, and a diffuser portion with a diffuser flow passage being formed, the diffuser flow passage extending along the scroll flow passage on a radially inner side of the scroll flow passage and communicating with the scroll flow passage. The diffuser flow passage includes an inner flow passage portion extending from an inlet portion of the diffuser flow passage to a throat portion with a flow passage height thereof decreasing, and an outer flow passage portion extending from the throat portion to an outlet portion of the diffuser flow passage. An average distance from the rotational axis to the throat portion within a range where an angular range in a circumferential direction with reference to a tongue section of the scroll portion is between 240° and 300° is greater than an average distance from the rotational axis to the throat portion outside the range where the angular range is between 240° and 300°.

7. 发明申请

US20200063751A1 CENTRIFUGAL COMPRESSOR AND TURBOCHARGER 审中-公开
公开(公告)号：US20200063751A1
公开(公告)日：2020-02-27
申请号：US16467270
申请日：2018-01-30
申请人： MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
发明人： Kenichiro IWAKIRI , Yoshihiro HAYASHI
IPC分类号： F04D29/30 , F04D17/10
摘要： A centrifugal compressor includes an impeller including a hub and a plurality of blades disposed on an outer peripheral surface of the hub at intervals in a circumferential direction, and a casing accommodating the impeller and defining an inlet passage for introducing air along an axial direction of the impeller. An inner peripheral surface of the inlet passage includes a narrowed portion, and an inclined portion connected to a downstream side of the narrowed portion and having a radial distance from a rotational axis of the impeller gradually increasing toward the vicinity of tips of leading edges of the blades. Further, 0.01R1≤σ≤0.1R1 is satisfied, where R1 is radial distance between a downstream end of the inclined portion and the rotational axis, R2 is radial distance between a downstream end of the narrowed portion and the rotational axis, and σ is constriction amount which is a difference between R1 and R2.

8. 发明申请

US20190120127A1 MULTI-STAGE TURBO SUPERCHARGING SYSTEM 审中-公开
公开(公告)号：US20190120127A1
公开(公告)日：2019-04-25
申请号：US16094445
申请日：2016-05-18
申请人： MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
发明人： Yusuke YASHIRO , Vissuta JIWARIYAVEJ , Yoshihiro HAYASHI , Byeongil AN
IPC分类号： F02B37/16 , F02M26/08 , F02B37/013
摘要： A multi-stage turbo supercharging system includes: a bypass passage which bypasses a turbocharger from among a plurality of turbochargers, in an intake passage or an exhaust passage of the engine; a bypass valve disposed in the bypass passage; an operation mode selection part; a bypass valve opening degree map selection part configured to select at least one bypass valve opening degree map in accordance with the operation mode selected by the operation mode selection part, from among a plurality of bypass valve opening degree maps which represent respective relationships between a plurality of control parameters of the engine and an opening degree of the bypass valve; a bypass valve opening degree determination part configured to determine an opening degree command value for the bypass valve on the basis of the bypass valve opening degree map and control parameter information representing the plurality of control parameters; and a bypass valve opening degree control part configured to control the opening degree of the bypass valve on the basis of the opening degree command value for the bypass valve.

9. 发明申请

US20190078505A1 ENGINE SYSTEM, ENGINE SYSTEM CONTROL DEVICE, ENGINE SYSTEM CONTROL METHOD, AND PROGRAM 审中-公开
公开(公告)号：US20190078505A1
公开(公告)日：2019-03-14
申请号：US16077313
申请日：2016-03-07
申请人： MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
发明人： Yusuke YASHIRO , Yoshihiro HAYASHI , Byeongil AN , Yuuji WAKAI
IPC分类号： F02B37/04 , F02B37/16 , F02D41/00
摘要： A control device according to the present invention determines whether a demand load demanded of an engine exceeds a load threshold. The control device starts an electric motor if the demand load exceeds the load threshold. If the demand load is equal to or less than the load threshold, the control device performs control such that the degree of opening of an on-off valve increases monotonically with respect to the demand load. The control device switches the on-off valve from an open state to a closed state when the electric motor starts.

10. 发明申请

US20210033103A1 CENTRIFUGAL COMPRESSOR AND TURBOCHARGER 有权
公开(公告)号：US20210033103A1
公开(公告)日：2021-02-04
申请号：US17042661
申请日：2018-07-13
申请人： MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
发明人： Yoshihiro HAYASHI , Yutaka FUJITA , Kenichiro IWAKIRI
IPC分类号： F04D29/42 , F04D29/44
摘要： 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.

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