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A jet device and vehicle

A jet flow, vehicle technology, applied in vehicle parts, transportation and packaging, windows, etc., can solve problems such as affecting the appearance of the vehicle, affecting the front vision, etc., and achieve the effect of reducing the roar of the vehicle

Active Publication Date: 2022-04-08
ZHEJIANG GEELY AUTOMOBILE RES INST CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above existing technologies all affect the appearance of the vehicle or affect the front view after the window is opened.

Method used

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  • A jet device and vehicle
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  • A jet device and vehicle

Examples

Experimental program
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Effect test

Embodiment Construction

[0052] figure 1 A schematic schematic showing a simplified model of window-opening wind noise generation for a vehicle. Such as figure 1As shown in Fig. 1, when the window is opened at high speed, the tangential flow at the front edge of the vehicle window falls off due to the lack of a surface to continue to adhere to, resulting in a vortex, which moves further backwards and expands, impacting the cavity in the car and the rear edge of the window . The cavity in the car is impacted by the vortex, and the regular expansion and contraction of 10-20Hz (referred to as pressure fluctuation) occurs due to the inability to release the pressure in time. The vortex impinging on the rear edge of the window is reflected by the wall of the rear edge, forming a positive excitation to the front vortex, which further intensifies the vortex shedding at the front edge of the window. It is precisely because of the violent impact and extrusion of the vortex on the cavity in the car that the ...

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Abstract

The invention provides a jet flow device and a vehicle. The spray device includes a spray nozzle for spraying air, the spray nozzle is arranged at the front edge of the window, and the air outlet of the spray nozzle faces the rear edge of the window, so that through the The airflow ejected from the spray nozzle is sprayed from the front edge of the window toward the rear edge of the window, so that the airflow ejected from the spray nozzle prevents the front edge of the window from An aeolian vortex is formed between the trailing edges. According to the solution of the embodiment of the present invention, the jet flow device uses the jet flow at the front edge of the window to destroy the conditions for wind vibration, thereby reducing the roar of the vehicle, and has minimal impact on the front view after the window is opened, which can realize Basically, it does not affect the aesthetics of the window. Specifically, after the window is closed, the air inlet and outlet are hidden, so it does not affect the appearance of the window. When the window is opened, due to the design of the jet nozzle and the window frame The sides are basically flat, and the aesthetics are not affected much.

Description

technical field [0001] The invention relates to the technical field of wind noise reduction for vehicles, in particular to a jet device and a vehicle. Background technique [0002] When the car is running at high speed, the friction between the airflow and the body will produce wind noise. The wind noise outside the car is transmitted to the inside of the car and becomes the main noise source in the car. When the car window is opened, the inside of the car is connected with the outside of the car, and a cavity is formed inside the car body. At this time, the airflow acts on the car body, which will form a roar in the car, that is, wind vibration noise. [0003] At present, consumers pay more attention to the ride comfort and driving safety of the car when purchasing a car. The roar of the car has always been one of the comfort issues that consumers mainly complain about. In addition to increasing the driving resistance and increasing fuel consumption, the driving condition...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60J1/20
CPCB60J1/20
Inventor 姜光赵花垒张军魏伟王连会李鑫张凯歌
Owner ZHEJIANG GEELY AUTOMOBILE RES INST CO LTD
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