Vice silencer of car exhaust system

The utility model relates to a vice silencer of car exhaust system, include the resonant cavity and run through the main perforated pipe of resonant cavity is equipped with the baffle between main perforated pipe outer wall and resonance intracavity wall, the baffle separates into two at least resonance cavities with the resonant cavity, and main perforated pipe overcoat in one of them resonant cavity is equipped with vice perforated pipe, the both ends of vice perforated pipe are rather than the resonance cavity rigid coupling that belongs to, the utility model provides a separate under the certain condition of progression at the silencer, widen the noise reduction effect through changing the silencer structure. 本实用新型涉及种汽车排气系统副消声器，包括共振腔和贯穿所述共振腔的主穿孔管，在主穿孔管外壁与共振腔内壁之间设有隔板，所述隔板将共振腔隔成至少两个共振腔室，在其中个共振腔内的主穿孔管外套设有副穿孔管，所述副穿孔管的两端与其所在的共振腔室固接；本实用新型解决了在消声器分隔级数定的情况下，通过改变消声器结构扩宽降噪效果。