The invention discloses a composite exhaust silencer for a motor vehicle. The composite exhaust silencer comprises three sections of cylindrical pipe bodies which can be separately machined, the peripheral surface of the front cylindrical pipe body is covered with a thermoelectric conversion module, the upper surface of the thermoelectric conversion module is provided with a cooling water device, one side of the front cylindrical pipe body is connected with an air inlet pipe, and the other side of the front cylindrical pipe body is connected with a first breather pipe; the breather pipe is connected with the middle cylindrical pipe body through a particle trap; a through hole is machined in the middle cylindrical pipe body, a spiral channel is machined in the peripheral wall surface of the middle cylindrical pipe body, the through hole and the spiral channel are connected to form a gas channel, and the other side of the middle cylindrical pipe body is connected with a second breather pipe; the other side of the second breather pipe is connected with the rear cylindrical pipe body; an opening is formed in one side of the wall surface of the rear cylindrical pipe body and is connected with a closed tubular body, an infrasound source generator is mounted in the closed tubular body, and the outer side of the rear cylindrical pipe body is connected with an exhaust pipe. Compared with the prior art, the composite exhaust silencer has the advantages that the structure is easy to machine, the active noise reduction technology, the passive noise reduction technology and the self-power-supply technology are integrated, high-frequency noise can be restrained, and low-and-medium-frequency noise can be effectively reduced.

    本发明公开了一种机动车复合排气消声器,包括三段可分离加工的筒状管体,前部筒状管体的外周面覆盖热电转换模块,热点转换模块上表面是冷却水装置,前部筒状管体的一侧连接进气管,另一侧与第一通气管连接;通气管经由颗粒捕集器与中部筒状管体连接;中部筒状管体加工有通孔,且其外周壁面上加工有螺旋形通道,通孔与螺旋形通道相连形成气体通道,中部筒状管体的另一侧与第二通气管连接;第二通气管的另一侧与后部筒状管体连接;后部筒状管体的壁面一侧有开口,开口与一封闭管状体相连,封闭管状体内部安装有次声源发生器,后部筒状管体的外侧与排气管相连。较之现有技术,上述结构加工简单,综合了主动降噪、被动降噪和自供电技术,可以抑制高频噪声,且可以有效降低中低频噪声。


    Access

    Download


    Export, share and cite



    Title :

    Composite exhaust silencer for motor vehicle


    Additional title:

    机动车复合排气消声器


    Contributors:
    GONG XIAOCHUN (author) / WANG YIWEI (author)

    Publication date :

    2021-09-17


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    F01N GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL , Schalldämpfer oder Auspuffvorrichtungen für Gase von Kraft- und Arbeitsmaschinen oder von Kraftmaschinen allgemein / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES



    EXHAUST SILENCER OF VEHICLE

    SHIMURA NAOKI / ISHIGE SEIJI | European Patent Office | 2022

    Free access

    EXHAUST SILENCER

    HASEGAWA TAKESHI | European Patent Office | 2017

    Free access

    Silencer, exhaust cooling system and vehicle

    CHEN ZHEN / ZHANG FENG / WANG QIANG et al. | European Patent Office | 2024

    Free access

    Exhaust - silencer efficiency

    Automotive engineering | 1990


    Jet exhaust silencer

    Tyler, J. / Towle, G. | Engineering Index Backfile | 1955