Air inlet pipe

Abstract

The invention belongs to the technical field of automobile parts and provides an air inlet pipe. The air inlet pipe comprises a first air inlet pipe body, a second air inlet pipe body and a third air inlet pipe body, wherein the second air inlet pipe body and the third air inlet pipe body are connected to the two ends of the first air inlet pipe body respectively. The first air inlet pipe body comprises an inner pipe and an outer pipe, the outer wall of the inner pipe is sleeved with the outer pipe, and a sound absorbing cavity is formed between the inner pipe and the outer pipe. The end, away from the first air inlet pipe body, of the second air inlet pipe body is provided with an air inlet, and the end, away from the first air inlet pipe body, of the third air inlet pipe body is connected to an air filter. According to the air inlet pipe, the sound absorbing cavity is formed between the inner pipe and the outer pipe, low-and-medium-frequency noise is lowered through the sound absorbing cavity, the noise entering an engine room is lowered, and therefore noise in a vehicle is lowered, and a good taking environment is provided for a driver and passengers.

Description

technical field [0001] The invention belongs to the technical field of automobile components, and in particular relates to an air intake pipe. Background technique [0002] The air intake pipe is a very important part of the air intake system of the automobile engine. The air is sucked in through the air intake of the air intake pipe, and then enters the engine after being filtered by the air filter to ensure the cleanliness of the air entering the engine. function. [0003] At present, the air intake pipe used in cars is usually a braided pipe, the inside of the braided pipe is made of non-woven fabric, and the outside of the braided pipe is made of tarpaulin. This form of air intake pipe non-woven fabric has limited sound absorption performance, and can only absorb part of high-frequency noise, but has no noise reduction effect on low- and medium-frequency noise, causing low- and medium-frequency noise to enter the engine compartment, thereby increasing the noise inside t...

AI Technical Summary

Problems solved by technology

This form of air intake pipe non-woven fabric has limited sound absorption performance, and can only absorb part of high-frequency noise, but has no noise reduction effect on low- and medium-frequency noise, causing low- and medium-frequency noise to enter the engine compartment, thereby increasing the noise inside the car; and the engine compartment space Compact, waterproof cloth has poor wear resistance, and is prone to interference and wear with surrounding parts, which may easily cause gas leakage and affect the normal operation of the engine

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