A test system for oil sloshing noise of automobile fuel tank

Abstract

The present invention proposes a test system for oil sloshing noise of automobile fuel tanks, comprising: a track on which a mobile trolley is arranged; the tail section of the track passes through a noise detection device fixed on the ground; Fixed fuel tank; fixed human-computer interaction device, electrical control device and origin detection sensor on the mobile trolley; electrical control device includes servo controller and PLC motion controller; servo controller is used to control under the control of PLC motion controller The moving car moves; the origin detection sensor is used to sense the sensor block at the origin position on the track to detect whether the moving car is reset to the origin position; the human-computer interaction device is connected to the PLC motion controller signal. The invention has the advantages of simple operation, high testing efficiency and precision, and low interference noise, without adjusting the equipment, and directly changing the setting parameters on the human-computer interaction device.

Description

technical field [0001] The invention belongs to the field of automobile performance detection, in particular to an automobile fuel tank oil sloshing noise test system. Background technique [0002] The sloshing noise of the fuel tank of the automobile is one of the noise sources during the driving process of the automobile, which is often covered by the engine noise and other main noises. When the car accelerates, brakes or turns, the oil in the fuel tank moves relative to the fuel tank due to inertia, and hits the inner wall of the fuel tank to generate vibration, forming noise that is transmitted to the car. In recent years, with the continuous improvement of vehicle NVH performance, especially the application of engine start-stop technology and the introduction of hybrid electric vehicles, the noise level in the vehicle has been continuously reduced. During the braking process of the car, the noise of oil sloshing becomes relatively obvious, which has aroused widespread ...

AI Technical Summary

Problems solved by technology

[0004] However, the existing oil slosh noise test bench is complicated to operate, low in efficiency and poor in accuracy

The microphone is fixed on the sliding car, which is easily disturbed by wind noise and vibration of the fixed bracket, and cannot directly simulate the horizontal road conditions and the process of running at a constant speed

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