公开(公告)号：US20240360920A1

公开(公告)日：2024-10-31

申请号：US18573820

申请日：2021-09-08

Applicant: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.

Inventor： Tomoaki TAKESHITA

IPC: F16K37/00 ,  F02B37/18

CPC classification number: F16K37/0083 ,  F02B37/183

Abstract: This sound quality evaluation method for a wastegate valve comprises: a vibration data acquisition step for acquiring a plurality of pieces of vibration data that indicate vibration occurring in a wastegate valve and that are in a prescribed time period during which the degree of openness of the wastegate valve changes; a POA data acquisition step for acquiring POA values at a prescribed frequency band of 0.5 kHz or greater from a plurality of frequency spectra attained by performing frequency analysis on each of the plurality of pieces of vibration data; and a vibration noise evaluation step for evaluating vibration noise occurring in the wastegate valve on the basis of the plurality of POA values.

公开(公告)号：US12060825B1

公开(公告)日：2024-08-13

申请号：US18594654

申请日：2024-03-04

Applicant: Shanghai Jiao Tong University

Inventor： Lei Shi ,  Ling Leng ,  Junwei Li ,  Yong Zhang ,  Kangyao Deng

IPC: F02B37/18 ,  F02B37/00 ,  F02B37/013 ,  F02D41/00

CPC classification number: F02B37/183 ,  F02B37/004 ,  F02B37/013 ,  F02D41/0007

Abstract: A two-stage turbocharging energy-efficient self-adaptive control method based on multi-point intake and exhaust pressures in diesel engine turbocharging field, including: determining a target turbocharging pressure for plains upon diesel engine speed and load conditions; adjusting it to obtain optimal target turbocharging pressures for varying altitudes; using these and measured multi-point pressures in intake and exhaust pipelines as inputs, based on an energy utilization analysis model, to determine the two-stage turbocharging energy utilization efficiency suitable for different altitude environmental conditions; according to the optimal overall efficiency principle of the two-stage turbocharging system at variable altitudes, calculating opening degrees of the bypass valves that meets the target total pressure ratio by a valve control unit. Reasonable distribution of exhaust energy between the two-stage turbochargers is achieved. The invention can achieve an efficient utilization of exhaust energy, and self-adaptive control of a variable-altitude two-stage turbocharging system.

公开(公告)号：US20240191650A1

公开(公告)日：2024-06-13

申请号：US18556322

申请日：2022-04-26

Applicant: Zero Nox, Inc.

Inventor： James Matthew KERTON

IPC: F02B37/22 ,  F02B37/18 ,  F02M26/10 ,  F02M26/19

CPC classification number: F02B37/225 ,  F02B37/183 ,  F02M26/10 ,  F02M26/19

Abstract: A Venturi device with a primary flow path and a secondary flow path introduced into the primary flow path, wherein a flow of one or more flowable mediums in the primary flow path and the secondary flow path creates a vortex generating a suction at an inlet of the Venturi device. Systems incorporating the Venturi device in which the primary flow path is charged with energy in the form of thermal energy from the ambient environment through the flow-induced vortex formation. Supercharger systems incorporating the Venturi device, wherein the primary flow of air into an engine is compressed with exhaust gases recirculated through the secondary flow path.

公开(公告)号：US11913390B2

公开(公告)日：2024-02-27

申请号：US17691666

申请日：2022-03-10

Applicant: BOMBARDIER RECREATIONAL PRODUCTS INC.

Inventor： Bruno Schuehmacher ,  Luc Champigny

IPC: F02D41/00 ,  F02B37/18 ,  F02D41/14 ,  F02B75/02 ,  F02M35/10

CPC classification number: F02D41/0007 ,  F02B37/183 ,  F02B2075/025 ,  F02D41/1446 ,  F02D2200/0404 ,  F02D2200/10 ,  F02D2200/101 ,  F02M35/1019

Abstract: A method for controlling a two-stroke engine operatively connected to a turbocharger, the turbocharger being in fluid communication with the engine to provide a boost pressure thereto, the method including: comparing one of (i) an actual power output of the engine; and (ii) an exhaust temperature representative of an actual temperature of exhaust gas being discharged by the engine, with a corresponding threshold value thereof; in response to the one of the actual power output of the engine and the exhaust temperature being less than the corresponding threshold value: determining a corrective amount of boost pressure to add to the boost pressure of the turbocharger; and controlling the turbocharger to increase the boost pressure of the turbocharger by the corrective amount. Another method for controlling a two-stroke engine operatively connected to a turbocharger is also disclosed.

公开(公告)号：US20230410570A1

公开(公告)日：2023-12-21

申请号：US18303278

申请日：2023-04-19

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Isamu TOJO

IPC: G07C5/08 ,  F02B37/18

CPC classification number: G07C5/0808 ,  F02B37/183

Abstract: A vehicle includes an engine, a turbocharger that supercharges intake air to the engine, an exhaust passage connected to the engine, a turbine of the turbocharger being disposed in the exhaust passage, a bypass passage that bypasses the turbine and is connected to the exhaust passage, a waste gate valve that opens and closes the bypass passage; and an abnormality determination device configured to include a determination unit configured to determine an abnormality of the waste gate valve when an operation state of the engine is a supercharging state.

公开(公告)号：US20230392531A1

公开(公告)日：2023-12-07

申请号：US18235231

申请日：2023-08-17

Applicant: Cummins Emission Solutions Inc.

Inventor： Colin L. Norris ,  Matthew Henry ,  Stephen W. Caddy ,  Randolph G. Zoran ,  Stephen M. Holl ,  Matthew Robert Brookes ,  Jamie Archer ,  John M. Clark

IPC: F01N3/20 ,  F02B37/18 ,  B01D53/94 ,  B01F23/213 ,  B01F25/314 ,  B01F27/112

CPC classification number: F01N3/2066 ,  F02B37/183 ,  B01D53/9431 ,  B01F23/2132 ,  B01F25/314 ,  B01F27/112 ,  B01F2215/0422 ,  F01N2610/1453 ,  F01N2610/1433 ,  F01N2610/08

Abstract: An exhaust gas system includes an engine-turbine exhaust gas conduit, a turbocharger, a turbine-housing exhaust gas conduit, an injection housing, a dosing module, and a bypass system. The engine-turbine exhaust gas conduit is configured to receive exhaust gas. The turbocharger includes a turbine. The turbine is coupled to the engine-turbine exhaust gas conduit. The turbine-housing exhaust gas conduit is coupled to the turbine. The injection housing is coupled to the turbine-housing exhaust gas conduit and centered on an injection housing axis. The dosing module is coupled to the injection housing and includes an injector. The injector is configured to dose reductant into the injection housing. The injector is centered on an injector axis. The bypass system includes a bypass inlet conduit, a bypass valve, and a bypass outlet conduit. The bypass inlet conduit is coupled to the engine-turbine exhaust gas conduit.

公开(公告)号：US11746715B2

公开(公告)日：2023-09-05

申请号：US17276410

申请日：2018-10-01

Applicant: VOLVO TRUCK CORPORATION

Inventor： Anders Mohlin ,  Malin Ehleskog

IPC: F02D41/00 ,  F01N13/10 ,  F02D41/14 ,  F02D41/02 ,  F02B37/18 ,  F02D9/04 ,  F02B37/02

CPC classification number: F02D41/0007 ,  F01N13/107 ,  F02B37/183 ,  F02D9/04 ,  F02D41/024 ,  F02D41/1446 ,  F02D41/1448 ,  F02B37/025 ,  F02D2200/0802 ,  F02D2200/101 ,  F02D2200/1002 ,  F02D2200/70

Abstract: The invention relates to a method to control an internal combustion engine. The internal combustion engine comprises a cylinder, an exhaust guide arranged to guide an exhaust flow from the cylinder through a turbine, and a bypass guide arranged to bypass a bypass flow from the cylinder past the turbine. The method comprises the step to determine a value of at least one engine operation parameter. The method is characterized by the step to determine a target value of an exhaust performance parameter depending on the determined engine operation parameter value. Further, the method comprises, depending on the determined target exhaust performance parameter value, the step to control the exhaust flow through the exhaust guide and the step to control the bypass flow through the bypass guide.

公开(公告)号：US11739684B2

公开(公告)日：2023-08-29

申请号：US17961246

申请日：2022-10-06

Applicant: Yanmar Power Technology Co., Ltd.

Inventor： Taishi Murakami ,  Masayoshi Doui

IPC: F02B43/02 ,  F02B37/18 ,  F02B37/16 ,  F02D41/00 ,  F02D19/02 ,  F02D19/06 ,  F02B43/04 ,  F02B33/22 ,  F02B39/16

CPC classification number: F02B43/02 ,  F02B37/18 ,  F02B43/04 ,  F02D19/02 ,  F02D19/06 ,  F02D41/0007 ,  F02B33/22 ,  F02B37/16 ,  F02B37/183 ,  F02B39/16 ,  F02D2250/34 ,  Y02T10/12 ,  Y02T10/30

Abstract: An engine including an exhaust bypass valve and an intake bypass valve. The exhaust bypass valve is disposed in an exhaust bypass channel connecting an outlet of an exhaust manifold and an exhaust outlet of a turbocharger to each other. The intake bypass valve is disposed in an intake bypass channel connecting an inlet of an intake manifold and an inlet of the turbocharger. An intake pressure sensor detects a pressure of the intake manifold. If an instruction value indicating an upper limit or a lower limit of the valve opening degree of the intake bypass valve is continuously output for a predetermined time or more, an engine control device determines that an abnormality occurs in at least one of the exhaust bypass valve and the intake bypass valve.

公开(公告)号：US20230265784A1

公开(公告)日：2023-08-24

申请号：US18018169

申请日：2020-08-17

Applicant: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.

Inventor： Kunihiro TOMIKAWA ,  Toru HOSHI ,  Takeshi YASOSHIMA ,  Naoto TASHIRO

IPC: F02B37/18 ,  F01D17/10

CPC classification number: F02B37/183 ,  F01D17/105 ,  F05D2220/40 ,  F05D2260/606

Abstract: A wastegate valve device according to at least one embodiment is a wastegate valve device disposed on a bypass passage bypassing a turbine of a turbocharger arranged on an exhaust gas passage of an engine, including: a valve seat surface formed at an outlet of the bypass passage; and a wastegate valve body which includes a support arm supported rotatably about an axis and a valve body supported by the support arm, the valve body being configured to come into and out of contact with the valve seat surface in accordance with rotation of the support arm. In the wastegate valve device according to at least one embodiment, the valve seat surface is inclined with respect to a direction orthogonal to an axial direction of the bypass passage, as viewed from a direction of the above-described axis.

公开(公告)号：US20190218964A1

公开(公告)日：2019-07-18

申请号：US15874639

申请日：2018-01-18

Applicant: Ford Global Technologies, LLC

Inventor： Patrick Matthews ,  Tyler Kelly

IPC: F02B39/10 ,  F02D41/06 ,  F01N5/04 ,  F02D11/10 ,  F02B37/18

CPC classification number: F02B39/10 ,  F01N5/04 ,  F02B37/183 ,  F02D11/105 ,  F02D41/062

Abstract: Systems and methods for operating an internal combustion engine that includes an electric turbocharger are described. The systems and methods may operate the electric turbocharger in a motor mode or a generator mode. The electric turbocharger may be operated in a generator mode to reduce an amount of time to activate electric turbocharger in a motor mode.