The invention belongs to the technical field of automobile exhaust noise reduction, and relates to a rear bumper assembly structure for optimizing automobile exhaust flow noise. The rear protection exhaust decorative cover (1) is arranged at the position, close to the lower portion, of the rear protection body (2), the rear protection ventilation frame (5) is arranged at the position, close to the lower portion, of the rear side wall (6), and the position from the rear protection exhaust decorative cover (1) to the position of the rear protection ventilation frame (5) is a path leading to an automobile cabin. And the rear protection sound-absorbing cotton (4) is arranged from the position of the inner surface of the rear protection body (2) close to the rear protection exhaust decorative cover (1) to the position of the inner surface of the rear side wall (6) close to the rear protection ventilation frame (5). According to the rear protection assembly structure for optimizing the exhaust airflow noise of the automobile, the exhaust airflow noise problem is optimized from the rear protection assembly structure path, the effects of sound absorption and noise reduction are achieved, the roaring problem caused by the exhaust low-frequency band and the airflow noise problem of the middle-high frequency band are balanced and optimized, the rear protection assembly structure has great significance in improving the NVH performance of the whole automobile, and the comfort of the whole automobile is improved.

    本发明属于汽车排气降噪技术领域的优化汽车排气流噪的后保总成结构。后保排气装饰罩(1)设置在后保本体(2)靠近下方位置,后保通风框(5)设置在后侧围(6)靠近下方位置,后保排气装饰罩(1)位置到后保通风框(5)位置是通向汽车座舱的路径,后保本体(2)内表面靠近后保排气装饰罩(1)位置到后侧围(6)内表面靠近后保通风框(5)位置设置后保吸音棉(4)。本发明的优化汽车排气流噪的后保总成结构,从后保总成结构路径上进行排气流噪问题优化,起到吸音降噪的效果,平衡优化排气低频段导致的轰鸣和中高频段的流噪问题,对改善整车NVH性能具有重要意义,提升整车舒适性。


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    Titel :

    Rear bumper assembly structure for optimizing automobile exhaust airflow noise


    Weitere Titelangaben:

    一种优化汽车排气流噪的后保总成结构


    Beteiligte:
    ZHANG HONGJUN (Autor:in) / YANG DONG (Autor:in) / XIA RENFENG (Autor:in) / WANG ZHENXIN (Autor:in) / TANG YULIN (Autor:in)

    Erscheinungsdatum :

    2023-08-08


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR



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