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公开(公告)号：US12228038B2
公开(公告)日：2025-02-18
申请号：US18272676
申请日：2021-12-13
Inventor： Toshimitsu Tanaka , Bipin Gupta , Nao Taniguchi
Abstract: A variable geometry turbine includes a variable nozzle unit for adjusting a flow of exhaust gas in an exhaust gas passage for introducing exhaust gas to the turbine rotor. The variable nozzle unit includes a plurality of nozzle vanes disposed in the exhaust gas passage at intervals in the circumferential direction of the turbine rotor. When the exhaust gas passage is divided into a near-tongue region in the vicinity of a tongue portion of the scroll passage and a far-tongue region which is a region other than the near-tongue region, the plurality of nozzle vanes includes at least one near-tongue nozzle vane disposed in the near-tongue region and at least one far-tongue nozzle vane disposed in the far-tongue region. The at least one near-tongue nozzle vane has, in at least one of a leading edge or a trailing edge of the near-tongue nozzle vane, a notch that is cut out to a greater extent than a leading edge or a trailing edge of the far-tongue nozzle vane.
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公开(公告)号：US20250003373A1
公开(公告)日：2025-01-02
申请号：US18707624
申请日：2022-10-19
Inventor： Kengo TANAKA , Yusuke IMAMORI , Sota WATANABE , Taro TAMURA
Abstract: In this engine control device for controlling an engine with a turbocharger, a rotation speed increase mode includes at least one stage of fuel injection in one combustion cycle of the engine, a high-idle mode includes at least two stages of fuel injection in one combustion cycle of the engine, and a high-idle mode execution unit is configured to retard the timing of the second stage fuel injection in one combustion cycle of the engine in the high-idle mode, relative to the timing of the first stage fuel injection in one combustion cycle of the engine in the rotation speed increase mode.
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公开(公告)号：US12158120B2
公开(公告)日：2024-12-03
申请号：US18223920
申请日：2023-07-19
Inventor： Masayuki Iizumi , Motoi Kawashima , Takuya Kumagai , Makoto Sakaguchi , Kazunori Sawazaki , Hideho Narita , Ryuji Katayama
Abstract: The present invention suppresses leakage of combustion gas from a contact surface. A cylinder head (20) is attached to a cylinder block. The surface (26) of the side of the cylinder head (20) that is attached to the cylinder block includes a first region (AH1) and a second region (AH2) that has higher hardness than the first region (AH1).
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公开(公告)号：US12149082B2
公开(公告)日：2024-11-19
申请号：US17625261
申请日：2020-08-07
Inventor： Osamu Nakakita , Masayuki Tanaka , Masato Mitsuhashi , Fujio Eguchi
IPC: H02J3/18 , G05B19/042
Abstract: This command generation device generates a control command for a power conversion device which converts DC power outputted by a DC power supply device to AC power and supplies the same to a bus, and which converts AC power from the bus to DC power and supplies the same to the DC power supply device. Said command generation device comprises: a virtual power generation calculation unit which simulates the driving of a virtual power generator and, on the basis of a rotor model that calculates the rotational speed of the virtual power generator, calculates the root-mean-square voltage and phase of the virtual power generator; a bus calculation unit which calculates the voltage and phase at a point of contact between the power conversion device and the bus; a phase difference angle calculation unit which calculates the phase difference angle between the phase of the virtual power generator and the phase at the point of contact; a target power determination unit which determines a target value for the effective power of the power conversion device on the basis of the root-mean-square voltage of the virtual power generator, the voltage at the point of contact and the phase difference angle; and a command generation unit which generates a control command for the power conversion device on the basis of the determined target value for the effective power.
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公开(公告)号：US20240353009A1
公开(公告)日：2024-10-24
申请号：US18687730
申请日：2022-09-13
Inventor： Rick HONIJK
IPC: F16K1/20
CPC classification number: F16K1/2042
Abstract: In the technical field of wastegate valves comprising a functional assembly of a body member (20) and an actuable member (30), measures are proposed to limit axial wear of the body member (20) and the actuable member (30) on each other as a result of engine vibration and pulsation. One of the measures involves a design of the wastegate valve in which at least one of surfaces (24, 33) of the body member (20) and the actuable member (30) facing each other in an axial direction (A) of the wastegate valve is provided with at least one elevated portion (26, 35) delimited by at least one recessed portion (27, 36) in at least a tangential direction (T) about the axial direction (A). In this way, one or more spaces for receiving tiny wear particles from the interface between the body member (20) and the actuable member (30) are obtained.
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Patent Agency Ranking
公开(公告)号：US12055299B2
公开(公告)日：2024-08-06
申请号：US17796491
申请日：2020-02-19
Inventor： Shinji Fujita , Hikaru Kurosaki , Yuta Ishii
IPC: F23R3/60
CPC classification number: F23R3/60 , F23R2900/03042
Abstract: A combustor includes: a combustion cylinder; and a combustion-chamber forming member disposed so as to be at least partially inserted into the combustion cylinder and forming a combustion chamber with the combustion cylinder. A radial-direction gap for introducing film air is formed between the combustion cylinder and the combustion-chamber forming member. A gas turbine includes a combustor; a compressor for generating compressed air; and a turbine configured to be rotary driven by combustion gas from the combustor.
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公开(公告)号：US12055091B2
公开(公告)日：2024-08-06
申请号：US18016618
申请日：2020-12-28
Inventor： Shunsuke Miyoshi , Kenji Nitta , Hiroshi Nakagawa , Sosuke Irie
CPC classification number: F02B37/183 , F04D17/10 , F04D29/4206 , F01D17/146 , F01D25/12 , F01D25/24 , F02B37/18 , F05D2220/40
Abstract: A turbine housing that includes: a body part including a scroll passage wall surface, an exhaust gas discharge path wall surface, and a wastegate passage wall surface provided inside the body part, the scroll passage wall surface forming a scroll passage having a scroll shape, the wastegate passage wall surface forming a wastegate passage connecting the scroll passage and the exhaust gas discharge path to each other while bypassing the turbine wheel; and an entrance flange part provided at an upstream end of the scroll passage in the body part, the entrance flange part including an exhaust gas inlet leading to the scroll passage. The wastegate passage has an entrance-side opening edge formed at the scroll passage wall surface and provided at a position where the entrance-side opening edge is visually recognizable at least partially from outside the turbine housing through the exhaust gas inlet.
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公开(公告)号：US20240247629A1
公开(公告)日：2024-07-25
申请号：US18562697
申请日：2022-05-30
Inventor： Hisao OGAWA
IPC: F02M59/44
CPC classification number: F02M59/44
Abstract: Provided is a fuel pump including: a pump head (23); a plunger barrel (32) in which a support hole (38) is provided, and one end section of which in the axial direction of the support hole (38) is screw-fastened into the pump head (23); a plunger (41) that is supported in the support hole (38) so as to be freely movable in the axial direction; a pressurization chamber (56) that is defined by one end of the support hole (38) and one end of the plunger (41); a fuel discharge passage (73) one end of which communicates with the pressurization chamber (56); and a fuel suction passage (70) one end of which communicates with the pressurization chamber (56).
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公开(公告)号：US20240110532A1
公开(公告)日：2024-04-04
申请号：US18276421
申请日：2021-12-02
Inventor： Naoki HASHIMOTO , Ko TAKAYANAGI , Masataka SHIRAISHI , Yuta FURUKAWA , Yosuke KITAMURA , Yuki KOYAMA
CPC classification number: F02D41/1495 , F02D41/0007 , F02D41/1446 , F02D41/0027 , F02D2200/0406 , F02D2200/0411
Abstract: Provided is an engine control device for controlling an opening degree of a valve adjusting a flow rate of an air-fuel mixture of an engine, wherein the opening degree is corrected based on an exhaust temperature deviation which is a deviation between a reference value and a current value of an exhaust temperature when controlling the opening degree.
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公开(公告)号：US20240060421A1
公开(公告)日：2024-02-22
申请号：US18270959
申请日：2021-01-08
Inventor： Arjan VAN BEMMEL , Jeffrey VAN DEN BROEK
IPC: F01D9/02
CPC classification number: F01D9/026 , F05D2220/40 , F05D2260/96 , F05D2240/14
Abstract: The invention relates to a turbine housing for use in a turbocharger, comprising a wheel housing space, an inlet, at least one volute, and a tongue that projects from a separation wall. The tongue is configured to guide an exhaust gas flow to a section of the wheel housing space where an inducer area of a turbine wheel to be accommodated by the turbine housing is to be located. At least one of the tongue and the separation wall is configured to enable a portion of the exhaust gas flow to pass therethrough as a leakage flow from an upstream side of the at least one of the tongue and the separation wall to a downstream side of the at least one of the tongue and the separation wall.
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