公开(公告)号：US11603780B2

公开(公告)日：2023-03-14

申请号：US17597911

申请日：2020-09-25

Applicant: Paolo Fresi

Inventor： Paolo Fresi

IPC: F01N1/06 ,  F01N1/08 ,  F01N1/18 ,  G10K11/175

Abstract: A noise abatement system for internal combustion engines comprising: a containment body (12) equipped with an inlet hole (6) for the entry of exhaust gases from an internal combustion engine, a plurality of expansion chambers (10) placed in sequence and separated by parallel dividing partitions (13), each equipped with a through-hole (4) for the passage of gases placing in fluid communication two neighboring expansion chambers (10); said expansion chambers (10) having two opposing through-holes (4), one as gas inlet and one as gas outlet. A rotating shaft (9) is integrated in a rotating turbine (1), along an axis comprising the center of gravity of the expansion chambers (10) up to an opposite end of the containment body (12), said rotating shaft (9) having placed around said axis and on said shaft (9) rotary fins (3) which open and close the through-holes (4) between expansion chambers (10) alternately and generating a swirling movement of the flow of gas entering each expansion chamber (10).

公开(公告)号：US10787943B2

公开(公告)日：2020-09-29

申请号：US16085310

申请日：2017-01-13

Applicant: HONDA MOTOR CO., LTD.

Inventor： Keisuke Kishikawa ,  Yoji Fukui ,  Kazuya Yoshio ,  Takuya Otsuka

IPC: F01N13/02 ,  F01N1/00 ,  F01N1/08 ,  F01N1/16 ,  F01N1/18 ,  F01N13/00 ,  F01N13/14 ,  F01N1/02 ,  F01N1/06 ,  F01N3/28 ,  F01N13/08 ,  B62K11/04

Abstract: An exhaust muffler includes a first muffler section connected to an exhaust pipe and a second muffler section connected to the first muffler section. Exhaust gases delivered from the exhaust pipe are discharged from the first muffler section and the second muffler section out of the exhaust muffler. The first muffler section includes a tubular member made up of an inner pipe to which the exhaust pipe is connected and an outer pipe covering the inner pipe, and a connector connecting the tubular member and the second muffler section to each other. The first muffler section has a first expansion chamber defined therein between the inner pipe and the outer pipe. The inner pipe houses therein a valve for changing an amount of exhaust gases passing through the inner pipe. The first muffler section includes a curved portion that is curved vertically as viewed in side elevation of the vehicle. The exhaust muffler has a second expansion chamber defined in the second muffler section rearward and upward of the first muffler section, the second expansion chamber having a cross-sectional area larger than a cross-sectional area of the first expansion chamber. There is thus provided an exhaust device for an internal combustion engine, which includes a muffler compact in a longitudinal direction thereof.

公开(公告)号：US10319357B2

公开(公告)日：2019-06-11

申请号：US15460916

申请日：2017-03-16

Applicant: Wipro Limited

Inventor： Vijay Kumar ,  Thomas Chittakattu Ninan

IPC: G10K11/04 ,  F01N1/00 ,  F01N13/02 ,  G01J1/16 ,  G01H17/00 ,  F02D41/02 ,  F01N1/16 ,  F01N1/18

Abstract: The present disclosure discloses a system for attenuating sound produced by a vehicle. The system comprises a navigation device associated with the vehicle for determining location details of the vehicle, a sound reduction unit provisioned in an exhaust assembly of the vehicle. The system further includes an Electronic Control Unit (ECU) of the vehicle communicatively coupled to the navigation device and the sound reduction unit. The ECU is configured to detect sound reduction location, by comparing the location details with a pre-defined location data and operate the sound reduction unit to attenuate sound produced by the vehicle when the sound reduction location is detected. The system of the present disclosure, attenuates sound intensity of the vehicle to a desired level by considering surrounding conditions of the vehicle, thus the vehicle noise may be automatically attenuated in the sound sensitive areas or locations.

公开(公告)号：US10273845B2

公开(公告)日：2019-04-30

申请号：US15440781

申请日：2017-02-23

Applicant: GM Global Technology Operations LLC

Inventor： Brad A. Saxman ,  Scott M. Reilly ,  Glenn Pietila

IPC: F01N1/16 ,  F01N1/18 ,  F01N13/08 ,  B60R16/023

Abstract: An automotive vehicle includes an internal combustion engine that generates exhaust gas and an exhaust system that expels the exhaust gas from the vehicle via at least one of a first exhaust conduit and a second exhaust conduit. A disturbance sensor is installed within a cabin of the vehicle, and is configured to detect a disturbance within the cabin and to output a disturbance signal indicative of the disturbance. An exhaust valve has a plurality of positions and adjusts an amount of the exhaust gas delivered to the first and second exhaust conduits. The automotive vehicle further includes an electronic hardware controller in signal communication with the at least one disturbance sensor and the exhaust valve. The controller adjusts the position of the exhaust valve based on the disturbance signal to reduce the disturbance within the cabin.

公开(公告)号：US20170204756A1

公开(公告)日：2017-07-20

申请号：US15346204

申请日：2016-11-08

Applicant: Middleville Tool & Die Co.

Inventor： Robert Leroy Middleton, JR. ,  Justin Tyler Middleton

IPC: F01N1/16 ,  F02D9/10 ,  F01N1/18

CPC classification number: F01N1/166 ,  F01N1/165 ,  F01N1/18 ,  F01N1/20 ,  F01N2240/36 ,  F01N2290/10 ,  F02D9/04 ,  F02D9/10 ,  F02D9/1015 ,  F02D9/1045 ,  F02D9/106 ,  F02D9/107

Abstract: A passive exhaust valve assembly includes an exhaust conduit that has a first pipe section attached in generally axial alignment with a second pipe section. The end portion of the first pipe section includes a circumferential segment disposed within the end portion of the second pipe section to form an overlapping interface. The end portions of the first and second pipe sections each include a flange protruding radially outward from the respective first or second pipe section, whereby the flanges engage with each other to form an axle seat therebetween. A support shaft extends laterally across an interior volume of the exhaust conduit and rotatably engages the axle seat. A valve plate is coupled to the support shaft within the interior volume of the exhaust conduit for moving relative to the exhaust conduit between open and closed positions.

公开(公告)号：US09255502B1

公开(公告)日：2016-02-09

申请号：US14461214

申请日：2014-08-15

Applicant: Dean W. Glass

Inventor： Dean W. Glass

IPC: F02B75/28 ,  F01N1/18

CPC classification number: F01N1/18

Abstract: An engine with an acoustic emissions valve or reflector for an exhaust system is disclosed. This reflector is disposed outside of the exhaust system—the reflector is disposed in the atmosphere into which the exhaust system discharges. The reflector is moved between a reflecting position (where the reflector reflects or obstructs acoustic emissions from the exhaust system) and a non-reflecting position (where the reflector does not obstruct the bulk exhaust gas flow from the exhaust system) by rotation of the crankshaft.

Abstract translation: 公开了具有用于排气系统的声发射阀或反射器的发动机。 该反射器设置在排气系统的外部 - 反射器设置在排气系统排放到的大气中。 反射器通过曲轴的旋转在反射位置（其中反射器反射或阻碍来自排气系统的声发射）和非反射位置（其中反射器不阻碍来自排气系统的大量废气流）之间移动 。

公开(公告)号：US09188089B2

公开(公告)日：2015-11-17

申请号：US14368963

申请日：2012-12-26

Applicant: YANMAR CO., LTD.

Inventor： Masataka Mitsuda ,  Kenta Saitou ,  Takayuki Onodera

IPC: F01N13/10 ,  F02M25/07 ,  F01N13/00 ,  F01N13/08 ,  F01N1/18 ,  F01N13/18 ,  F01N1/08 ,  F01N3/28

CPC classification number: F02M25/077 ,  B60K13/04 ,  F01N1/08 ,  F01N1/18 ,  F01N3/0235 ,  F01N9/002 ,  F01N13/008 ,  F01N13/08 ,  F01N13/082 ,  F01N13/10 ,  F01N13/18 ,  F01N13/1805 ,  F01N2240/36 ,  F01N2260/024 ,  F01N2260/14 ,  F01N2340/02 ,  F01N2340/04 ,  F01N2560/08 ,  F01N2590/08 ,  F01N2590/10 ,  F01P11/04 ,  F01P2060/16 ,  F02M26/12 ,  F02M26/14 ,  F02M26/22 ,  F02M26/30 ,  F02M26/32 ,  F02M26/47 ,  F02M26/52 ,  F02M26/54 ,  F02M26/70 ,  F02M26/72

Abstract: Provided is an engine apparatus that ensures highly accurate adjustment of the exhaust gas pressure of an exhaust manifold while providing an exhaust gas throttle device with a support structure of increased rigidity. The engine apparatus includes: an engine including the exhaust manifold; and the exhaust gas throttle device to adjust an exhaust gas pressure of the exhaust manifold. An exhaust gas intake side of a throttle valve easing of the exhaust gas throttle device is fastened to an exhaust gas exit of the exhaust manifold. An exhaust pipe is coupled to the exhaust manifold through the throttle valve casing.

Abstract translation: 提供一种发动机装置，其确保在排气节气门装置具有增加的刚性的支撑结构的同时高精度地调节排气歧管的排气压力。 发动机装置包括：发动机，其包括排气歧管; 和废气节流装置，以调节排气歧管的排气压力。 排气节流装置的节流阀的废气吸入侧被紧固到排气歧管的排气出口。 排气管通过节流阀壳体联接到排气歧管。

公开(公告)号：US08961667B2

公开(公告)日：2015-02-24

申请号：US13364247

申请日：2012-02-01

Applicant: David J. McCutchen ,  Wilmot H. McCutchen

Inventor： David J. McCutchen ,  Wilmot H. McCutchen

IPC: F01N5/04 ,  F01N3/01 ,  F01N3/037 ,  F01N1/18 ,  B01D53/32 ,  C25B9/12 ,  F01N1/08 ,  F01N3/08

CPC classification number: F01N5/04 ,  B01D53/326 ,  B01D2257/404 ,  C25B9/125 ,  F01N1/083 ,  F01N1/18 ,  F01N3/01 ,  F01N3/0892 ,  F01N2240/34 ,  Y02T10/16 ,  Y02T10/20

Abstract: A scrubbing muffler for internal combustion engines comprises coaxial counter-rotating disk pairs stacked in a cascade. Acoustic pulses are attenuated by doing work and dissipated by the circuitous path through the dynamic cascade. A motor and/or Venturi effect from slipstream over a vehicle assists exhaust and reduces backpressure for greater fuel economy. Exhaust gas fed at the axis is sheared between the disks of the first stage of the cascade as it passes radially outward into a shrouding tank disposed about the cascade. Vortex rebound at the tank wall advects flow radially inward back through the workspace between the first stage disks to axial extraction as feed for the second stage of the cascade. N2 and H2O, along with CO and NO, can pass radially inward to successive stages. Soot and CO2 stay in the tank. NO and CO are reduced at a Faraday disk cathode.

Abstract translation: 用于内燃机的洗涤消声器包括级联堆叠的同轴对转盘对。 声波脉冲通过工作衰减，并通过动态级联消除迂回路径。 来自车辆滑流的电动机和/或文丘里效应有助于排气并降低背压以获得更高的燃料经济性。 在轴向馈送的废气在级联的第一级的盘之间被剪切，因为其径向向外通向围绕级联设置的护罩槽。 在罐壁处的涡流反弹平缓地通过第一级盘之间的工作空间径向向内流动，以作为级联的第二级的进料轴向提取。 N 2和H 2 O以及CO和NO可以径向向内通过连续的阶段。 烟灰和二氧化碳停留在坦克中。 在法拉第盘式阴极处，NO和CO还原。

公开(公告)号：US20050011699A1

公开(公告)日：2005-01-20

申请号：US10890063

申请日：2004-07-13

Applicant: Yukihisa Horiko

Inventor： Yukihisa Horiko

IPC: F01N1/02 ,  F01N1/16 ,  F01N1/18 ,  F02B27/02 ,  F02M35/12 ,  G10K11/16 ,  F01N1/08

CPC classification number: F02M35/1222 ,  F01N1/02 ,  F01N1/023 ,  F01N1/166 ,  F01N1/18 ,  F02M35/1255

Abstract: A muffler which reduces noises of a wide frequency band with a simple structure. Sound waves of an intake duct enter into and are received in a resonance box via a branch pipe. At the branch pipe, a movable body slidingly abuts a peripheral portion of an opening of a cut-out portion. Due to the movable body rotating, a range of opening/closing of the cut-out portion is changed, and a length of a neck portion formed by the branch pipe and an arc-shaped plate, and a lateral cross-sectional surface area of a distal end of the neck portion, are changed.

Abstract translation: 消声器，其结构简单，可以减小宽频带的噪音。 进气管的声波进入并通过分支管接收在共振箱中。 在分支管上，可移动体滑动地邻接切口部分的开口的周边部分。 由于可移动体旋转，切口部的开闭范围变化，由分支管和弧形板形成的颈部的长度，横截面积 颈部的远端改变。

公开(公告)号：US20050011697A1

公开(公告)日：2005-01-20

申请号：US10623960

申请日：2003-07-17

Applicant: David Arlasky

Inventor： David Arlasky

IPC: F01N1/08 ,  F01N1/10 ,  F01N1/18 ,  F01N1/24 ,  F01N7/00

CPC classification number: F01N1/18 ,  F01N1/082 ,  F01N1/10 ,  F01N2310/02 ,  F01N2310/04

Abstract: The present invention provides a muffler comprising a rotatable propeller within or adjacent to an expansion chamber to swirl exhaust gas towards the outlet. The muffler maintains the sound level of the exhaust within acceptable limits, while delivering improved power and/or fuel efficiency over that of standard mufflers.

Abstract translation: 本发明提供了一种消声器，其包括在膨胀室内或邻近膨胀室的可旋转螺旋桨，以将废气朝向出口旋转。 消音器将废气的声级保持在可接受的限度内，同时提供比标准消音器更好的功率和/或燃料效率。