Air inlet pipe

Abstract

The invention discloses an air inlet pipe which is connected with an air filter of an automobile and comprises a swirling pipe section (1), a noise reduction pipe section (2) and an air guide pipe section (3) which are sequentially connected. The swirling pipe section (1) is used for filtering impurities in inlet airflow, the noise reduction pipe section (2) is used for reducing air inlet noise, and the air guide pipe section (3) is communicated with the air filter and used for guiding the inlet airflow flowing out of the noise reduction pipe section (2) into the air filter. By the aid of the technical scheme, the air inlet noise is effectively reduced, the dust holding capacity of an air inlet system can be improved, and the air inlet pipe has the advantages of compact structure, light weight and convenience in assembly, and easily realizes industrialization.

Description

technical field [0001] The invention relates to an air intake pipe, in particular to an air intake pipe for automobiles. Background technique [0002] In the working process of the automobile engine, in addition to the exhaust noise, the noise generated by the intake system should not be underestimated, especially in today's increasingly stringent control standards for vehicle noise. [0003] Generally, the air intake system of a car is generally arranged in the cabin. When the airflow is inhaled from the intake pipe before the air filter, the pressure pulsation in the intake pipe caused by the periodic opening and closing of the engine intake valve will form pulsating noise. During the intake process, the airflow flows through the flow section of the intake valve at high speed, which will form a strong vortex noise. In addition, the Helmholtz resonance noise of the outer cylinder and the air column resonance noise of the intake pipe will radiate outward through the intake ...

AI Technical Summary

Problems solved by technology

Therefore, if the intake noise cannot be well controlled, it will affect the noise of the whole vehicle to meet the regulatory standards, and even affect the comfort of the occupants in the cab.

[0004] In addition, because the layout of the intake system is limited by the space, the filter paper area of ​​the air filter is limited. If the air filter itself is used to filter the impurities in the intake airflow, it will make the car dust and other impurities in the air. In many areas, the dust holding capacity of the intake system is insufficient, which leads to too many impurities in the air reaching the engine, which not only shortens the maintenance cycle of the intake system, but even causes damage to the engine

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