Noise reduction and vibration reduction device, brake vacuum pipeline and vehicle

Abstract

The invention relates to a noise reduction and vibration reduction device, a brake vacuum pipeline and a vehicle. The noise reduction and vibration reduction device comprises an air inlet pipe, a resonant cavity and an air outlet pipe, and the interior of the resonant cavity is divided into an air inlet cavity and an air outlet cavity through a partition plate; the air inlet pipe penetrates through the air outlet cavity and the partition plate to be communicated with the air inlet cavity, the air outlet pipe penetrates through the air inlet cavity and the partition plate to be communicated with the air outlet cavity, and air enters from the air inlet pipe, sequentially flows through the air inlet cavity, vent holes in the partition plate and the air outlet cavity and flows out from the air outlet pipe. At least two first radial protrusions are arranged on the inner side wall of the air inlet cavity, and at least two second radial protrusions are arranged on the inner side wall of the air outlet cavity, so that air flow in the small-area resonant cavity is counteracted reversely for multiple times, and noise reduction and vibration reduction are achieved. The invention further provides a brake vacuum pipeline which comprises the noise reduction and vibration reduction device. The invention further provides a vehicle which comprises the brake vacuum pipeline. The automobile brake vacuum pipeline solves the problem that a one-way valve generates vibration and abnormal sound due to the fact that the gas flow speed is continuously too high in an existing automobile brake vacuum pipeline.

Description

technical field [0001] The invention relates to the technical field of automobile engines, in particular to a noise reduction and vibration reduction device, a brake vacuum pipeline and a vehicle. Background technique [0002] At present, the mainstream models in the automobile market are traditional fuel vehicles or hybrid vehicles. The engine is one of the most important parts of a car, and it has been gradually replaced by a small-displacement turbocharged engine. In order to provide sufficient vacuum for the brake vacuum line and consider economic benefits, more and more Many new models adopt the engine's own mechanical vacuum pump, and cancel the equipment of the electronic vacuum pump. [0003] However, there are differences in the working conditions and pumping efficiency of mechanical vacuum pumps and electronic vacuum pumps. The electronic vacuum pump only works under certain working conditions, such as turning on the air conditioner, reversing or using a car in p...

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to provide a noise reduction and vibration reduction device, a brake vacuum pipeline and a vehicle, to solve the problem that the brake vacuum pipeline of the existing automobile has excessively fast gas flow, which causes the check valve to produce abnormal vibration and noise, and The cross-sectional area of ​​the existing noise reduction and vibration reduction cavity is too large, and there is a problem of difficult spatial arrangement

The invention also provides a brake vacuum pipeline to solve the problem that the vibration of the engine is easily transmitted to the brake pedal through the booster and affects the driving comfort

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