Automotive transmission belt noise diagnosis

1. Overview

With the continuous development of automobile industry, the noise problem of automobile transmission has been paid more and more attention. Among them, the transmission belt noise is one of the common problems. Transmission belt noise is usually caused by friction, vibration and resonance between the belt and the transmission device, which will not only affect the comfort of the driver, but also cause damage to auto parts. Therefore, it is very important to diagnose and solve the noise of automobile transmission belt.

Second, the source of transmission belt noise

Friction between belt and transmission.

The vibration of the belt itself.

Resonance of the transmission.

Air flow between belt and drive.

Third, the transmission belt noise diagnosis method

Stethoscope diagnosis: The use of a stethoscope to diagnose belt noise can initially determine the source of the noise. Through the stethoscope, you can hear the sound of friction, vibration and air flow between the belt and the transmission.

Empirical diagnosis method: Based on previous experience, the source of noise can be preliminarily determined. For example, a specific noise at certain speeds may be due to a problem with the transmission belt itself or a problem with the transmission device.

Instrument diagnosis method: The use of professional detection instruments to detect the car can accurately determine the source of noise. For example, the frequency component of noise can be analyzed using a spectrum analyzer to determine the source of the noise.

Fourth, the transmission belt noise solution

Adjust the tension of the belt so that it is in the best working condition.

Replace old or worn belts with high-quality ones.

Adjust the position of the transmission or replace faulty parts.

Add lubricant to the belt to reduce friction and vibration.

For noise caused by resonance, the problem can be solved by changing the rigidity or damping of the transmission device.

1. Conclusion

The noise of automobile transmission belt is a complicated problem, its diagnosis and solution need to consider many factors. In actual operation, the appropriate diagnostic method and solution should be selected according to the specific situation. At the same time, in order to prevent the generation of belt noise, the automobile transmission system should be regularly checked and maintained to ensure that it is in good working condition.