Device and method for testing dynamic sound tightness of closure member of whole vehicle

Abstract

The invention relates to a device and method for testing the dynamic sound tightness of a closure member of a whole vehicle, and the device consists of an air leakage testing system and a supersonic detection system. The air leakage testing system comprises a fan, an air supply flexible pipe, a connecting plate, a silicone tube, and a micromanometer, wherein the fan, the air supply flexible pipe, the connecting plate, the silicone tube and the micromanometer are connected sequentially. The supersonic detection system comprises a supersonic signal generator, a supersonic detector, and a flexible detector. After the air leakage testing system is connected with a to-be-tested vehicle, the air leakage testing system supplies air to the vehicle quantitatively and enables the pressure on the surface of the closure member to reach a specified value. At this moment, a sealing strip of the closure member of the whole vehicle is in a dynamic sealing state, and then the supersonic detection system detects the supersonic leakage of the closure member of the whole vehicle and evaluates the dynamic sealing effect. The device is easy to implement, is low in cost, is simple in test conditions, and is good in result repeatability.

Description

technical field [0001] The invention relates to the technical field of automobile sealing, in particular to a method for testing the dynamic sound tightness of a pair of closing parts of a complete vehicle. Background technique [0002] Due to the complexity of the material and structure of the sealing strip of the automobile closure, so far there is no good measurement method for its compression deformation characteristics, which can accurately obtain quantitative evaluation. The existing finite element analysis and real vehicle test methods are all for testing the working deformation of the sealing strip of the closure when the car is in a static state, which cannot reflect the working state of the sealing strip of the closure when the car is dynamically sealed during actual driving. There are few testing methods for the dynamic sealing effect, and the idea of ​​testing in a wind tunnel laboratory is feasible, but the cost is expensive. Contents of the invention [0003...

AI Technical Summary

Problems solved by technology

[0002] Due to the complexity of the material and structure of the sealing strip of the automobile closure, so far there is no good measurement method for its compression deformation characteristics, which can accurately obtain quantitative evaluation.

The existing finite element analysis and real vehicle test methods are all testing the working deformation of the sealing strip of the closure when the car is in a static state, which cannot reflect the working state of the sealing strip of the closure when the car is dynamically sealed during actual driving

There are few test methods for dynamic sealing effect, and the idea of ​​testing in a wind tunnel laboratory is feasible, but the cost is expensive

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