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公开(公告)号：US11377093B2
公开(公告)日：2022-07-05
申请号：US16879263
申请日：2020-05-20
发明人： Aed M. Dudar
IPC分类号： B60W20/50 , F02M35/09 , F02D41/04 , F02D41/22 , F01N1/16 , B60W50/08 , F02B39/10 , F01N3/021 , F02D41/18 , G05D1/00
摘要： Methods and systems are provided for diagnostics of an exhaust tuning valve during vehicle-off conditions. In one example, the engine may be reverse rotated, unfueled while the position of the exhaust is varied and an intake air flow is estimated at each position of the exhaust tuning valve. The exhaust tuning valve may be diagnosed based on a change in air flow with the variation in the position of the exhaust tuning valve.
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公开(公告)号：US20220205377A1
公开(公告)日：2022-06-30
申请号：US17523135
申请日：2021-11-10
申请人： FERRARI S.p.A.
摘要： A car having: two front wheels; two rear wheels; a bottom wall, which delimits a lower surface, which faces a road surface and, in use, is brushed by an air flow flowing under the car; an internal combustion engine; and an exhaust system, which is coupled to the internal combustion engine and is provided with an exhaust duct, which originates from the internal combustion engine and has an end chamber, which ends with an outlet opening, through which exhaust gases are released into the atmosphere. The end chamber of the exhaust duct has at least one movable partition, which can be moved to different positions so as to change the width of the outlet opening. The movable partition delimits a lower surface of the end chamber, which faces the road surface and, in use, is brushed by the air flow flowing under the car.
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公开(公告)号：US20220205376A1
公开(公告)日：2022-06-30
申请号：US17523134
申请日：2021-11-10
申请人： FERRARI S.p.A.
摘要： An exhaust system for an internal combustion engine and having an end chamber having a first inlet opening and a second inlet opening, which are separate from and independent of one another, and an outlet opening, through which exhaust gases are released into the atmosphere; an exhaust duct, which originates from the internal combustion engine and leads to the first inlet opening of the end chamber; a silencer device, which has an outlet opening, which directly leads to the second inlet opening of the end chamber; a bypass duct, which originates from the exhaust duct in the area of a bifurcation and ends in an inlet opening of the silencer device; and an adjustment valve, which can be electronically controlled, is arranged along the exhaust duct downstream of the bifurcation where the bypass duct originates and is designed to adjust the exhaust gas flow towards the first inlet opening of the end chamber.
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公开(公告)号：US20220186642A1
公开(公告)日：2022-06-16
申请号：US17542062
申请日：2021-12-03
发明人： Shunsuke Sameshima , Kosuke Onoda , Masayuki Sudo
摘要： An exhaust pipe includes a tubular portion and a space forming portion. The tubular portion forms an exhaust flow path in an exhaust system of an internal combustion engine. The tubular portion has a tubular shape. The space forming portion is provided along at least one of an inner surface and an outer surface of the tubular portion and forms at least one branch space between the space forming portion and the tubular portion. The at least one branch space communicates with the exhaust flow path and has a function as a side-branch muffler. The at least one branch space includes a space with a length that is one third or more of an entire length of the exhaust system.
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公开(公告)号：US11261769B2
公开(公告)日：2022-03-01
申请号：US16749259
申请日：2020-01-22
IPC分类号： F01N1/16
摘要： Methods and systems are provided for adjusting a position of an exhaust valve that regulates engine exhaust noise. In one example, the position of the exhaust valve is adjusted according to a road grade estimate. The road grade estimate may be based on a vehicle's present position on a road or a position that is a distance away from the vehicle's present position.
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公开(公告)号：US11255238B2
公开(公告)日：2022-02-22
申请号：US16362768
申请日：2019-03-25
发明人： Fredrik Rönnmark , Mathias Klein
摘要： A muffler for a vehicle, where the muffler comprises a partition wall that divides the interior in a first chamber and a second chamber, where an inlet pipe comprising a perforated section arranged in the first chamber and a closed section arranged in the first chamber, where the outlet opening of the inlet pipe is arranged in the second chamber, a first outlet pipe comprising an inlet opening arranged in the first chamber and an outlet opening arranged outside of the muffler, where the muffler comprises a second outlet pipe having an inlet opening arranged in the second chamber, and where the second outlet pipe is provided with an exhaust valve adapted to open or close the exhaust gas flow through the second outlet pipe. The advantage of the invention is that a muffler with an improved low frequency noise attenuation and low backpressure is provided.
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公开(公告)号：US11236652B2
公开(公告)日：2022-02-01
申请号：US16085264
申请日：2017-01-13
发明人： Keisuke Kishikawa , Yoji Fukui , Kazuya Yoshio , Takuya Otsuka
IPC分类号： F01N1/16 , F01N1/06 , F01N1/00 , F01N1/08 , F01N13/02 , F01N1/18 , F01N13/00 , F01N13/14 , F01N1/02 , F01N3/28 , F01N13/08 , B62K11/04
摘要： An exhaust muffler is made up of a plurality of layers including an exhaust passage pipe and expansion chambers, and includes a front assembly and a rear assembly sub-assembled separately from the front assembly. The front assembly includes a front exhaust passage pipe, a front muffler body disposed in covering relation to the outside of the front exhaust passage pipe and cooperating with the front exhaust passage pipe in making up double-walled pipes, and an exhaust valve disposed in the front exhaust passage pipe. The rear assembly includes a rear exhaust passage pipe and a rear muffler body disposed in covering relation to the outside of the rear exhaust passage pipe and cooperating with the rear exhaust passage pipe in making up double-walled pipes. There is thus provided an exhaust device for an internal combustion engine in which the accuracy of a position where the exhaust valve is installed is high.
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公开(公告)号：US11215093B2
公开(公告)日：2022-01-04
申请号：US16350519
申请日：2017-05-24
申请人： IVEX PTY LTD
发明人： Zhanzhao Feng , Jesse Kovac
摘要： The preferred invention is directed to a controller for a vehicle exhaust valve. The controller comprises a vehicle interface for determining a live value for an operating parameter of a vehicle, a recording module being configured to, upon activation, instantaneously record the live value of the operating parameter, and a programming module for determining a value range based on the recorded live value and allowing a desired position of the valve to be set such that during operation, the control system automatically moves the valve to the desired position when the operating parameter is within the value range.
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公开(公告)号：US11149602B2
公开(公告)日：2021-10-19
申请号：US15985901
申请日：2018-05-22
发明人： Matthias Berger
摘要： A valve assembly for a vehicle exhaust system includes at least one pipe enclosing an exhaust gas flow path, the pipe defining a central axis, and at least one flexible flap positioned within the exhaust gas flowpath. The at least one flexible flap has one fixed edge held fixed to the pipe and extends to a distal edge that is free to bend in response to an increase in exhaust gas flow pressure to provide a variable restriction to flow through the pipe that varies in response to a pressure difference upstream and downstream of the at least one flexible flap.
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公开(公告)号：US11073068B2
公开(公告)日：2021-07-27
申请号：US16275691
申请日：2019-02-14
发明人： Hideaki Takada , Sho Takada
摘要： According to an aspect of the present invention, it is possible to easily support a spark arrester and prevent an occurrence of damage or sound in the spark arrester due to the effect of an exhaust pressure or external vibration. In a spark arrester, at least a flange part is formed of a spring member. The flange part includes a bent part that is telescopically bent by elastic deformation in a direction along a flow of exhaust gas. The bent part is supported between a tail pipe and a muffler in a state where the elastic deformation of the bent part is allowed.
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