Full vehicle abnormal sound test room

Abstract

The invention discloses a full vehicle abnormal sound test room. The full vehicle abnormal sound test room comprises a test chamber and an equipment chamber which are used for carrying out a full vehicle abnormal sound test; an actuator used for inputting vibration to a full vehicle and a mass block arranged below the actuator are installed in the equipment chamber; and the mass block is connectedwith the ground through a first elastic piece. The full vehicle abnormal sound test room has good vibration isolation and noise reduction performance.

Description

technical field [0001] The invention relates to the field of testing, in particular to a vehicle abnormal sound test room. Background technique [0002] With the continuous improvement of users' requirements for the vehicle experience, abnormal noise has become the hardest hit area for vehicle after-sales complaints. Each OEM spends a lot of financial, material and manpower, trying to control the abnormal noise of the whole vehicle in various links such as design and trial production, and strives to obtain the best user experience and satisfaction for the vehicles delivered to customers. At present, the hydraulic servo vehicle abnormal sound test room is the most commonly used vehicle abnormal sound detection and reproduction tool in the industry. Usually, most of the vehicle abnormal sound benches used by manufacturers are transplanted from four-column exciters for structural durability. The problem that both OEMs and suppliers are easy to ignore is the applicability of du...

AI Technical Summary

Problems solved by technology

Usually, most of the vehicle abnormal sound benches used by manufacturers are transplanted from the four-column exciter for structural durability. The problem that both OEMs and suppliers are easy to ignore is the applicability of the durable four-column application in the field of vibration and noise.

The conventional abnormal sound four-column test room is still stuck in the inherent test conditions of structural durability. The existing problems include: the noise of the hydraulic servo actuator itself is very high, and it is transmitted to the test room without any shelter; The necessary power source, that is, the oil pump system, lacks reasonable planning and isolation, and its extremely high noise seriously affects the identification and judgment of abnormal noise; the simple and extensive acoustic treatment of the test room causes the noise of the bench to generate reverberation in the room, and further It disturbs the identification and judgment of abnormal sound; the huge reaction force of hydraulic equipment acts on the foundation or the ground, causing the adjacent test room to be affected by vibration, and in the long run, it will cause abnormal settlement of the test bench

Images