Muffling tail pipe with decorative pipe

Abstract

The invention discloses a muffling tail pipe with a decorative pipe, which comprises a tail pipe and the decorative pipe, wherein the tail pipe is inserted into the decorative pipe of which the caliber is larger than that of the tai pipe; the tail end of the tail pipe is made into a horn mouth; the end face of a large-mouth end is firmly welded with the inner wall of the decorative pipe; the pipe body of the tail pipe is provided with a plurality of small holes; an end cover covers the front end of the decorative pipe and is sleeved on the tail pipe, the inner ring edge of the end cover is airtightly welded with the outer wall of the tail pipe, and the outer ring edge of the end cover is airtightly welded with the decorative pipe; the outer wall of the part of the tail pipe, which is inserted into the decorative pipe, the end cover and the inner wall of the decorative pipe jointly enclose to form an expansion chamber. Through the tail pipe with the decorative pipe with the structure, the spatial structure is effectively utilized, the chassis space is not occupied, and different muffling requirements can be met; impedance can be generated by the change of a section formed between the horn mouth of the tail pipe and the decorative pipe to achieve certain muffling effect; meanwhile, the horn mouth can reduce gas flow and reduce exhaust back pressure.

Description

Technical field [0001] The invention relates to a muffler system of an automobile, in particular to a muffleable exhaust tail pipe with a decorative pipe. Background technique [0002] The decorative pipe of automobile exhaust tail pipe is usually installed at the end of the automobile exhaust tail pipe. Its main function is to make the exhaust tail pipe more beautiful. At the same time, it also plays a role in preventing the deformation of the exhaust tail pipe, supercharging and turbulence. To a certain effect. At present, the decorative pipes on the market are larger than the exhaust tail pipes, or they are directly welded through the necking, or the exhaust tail pipe is inserted into the decorative pipe and then welded to the joint, or connected by a nut, or no connection occurs. The role is often just decoration. To reduce noise, it is necessary to arrange a muffler in the chassis space, which takes up limited chassis space and is not conducive to solving the vehicle's NVH ...

AI Technical Summary

Problems solved by technology

At present, the decorative pipes on the market are larger than the exhaust tail pipes, or they are directly welded after shrinking, or the exhaust tail pipes are inserted into the decorative pipes and then welded to the joint, or they are connected by nuts, or no connection is made, which plays an important role. The function is often just decoration. To reduce noise, it is necessary to arrange a muffler in the chassis space, which occupies a limited chassis space and is not conducive to solving the NVH (noise, vibration and harshness) problem of the vehicle.

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