The vibration and noise reduction effect of ethyl silicone oil lubricant in rail transit equipment can be mainly discussed from two aspects: its physical properties and application methods.

1. Physical properties of ethyl silicone oil
Ethyl silicone oil has a series of physical properties that are conducive to vibration and noise reduction:

Excellent viscosity-temperature performance: The viscosity of ethyl silicone oil changes little with temperature, and it can maintain stable lubrication performance under different temperature conditions. This feature helps to reduce vibration and noise caused by temperature changes in rail transit equipment.
Good chemical stability: Ethyl silicone oil has excellent chemical stability and can resist corrosion from a variety of chemicals, thereby extending the service life of the equipment and reducing noise caused by chemical corrosion.
Low volatility: Ethyl silicone oil has low volatility, which means that in the long-term operation of rail transit equipment, it can maintain a stable lubrication effect and reduce the increase in vibration and noise caused by lubricant volatilization.

2. Application of ethyl silicone oil
As a lubricant, ethyl silicone oil has various applications in rail transit equipment, which help achieve the effect of vibration reduction and noise reduction:

Track component lubrication: Ethyl silicone oil can be used for the lubrication of track components, such as track fasteners, sleeper pads, etc. By reducing the friction and wear between these components, the vibration and noise generated when the train passes can be reduced.
Vehicle suspension system lubrication: In the suspension system of rail transit vehicles, ethyl silicone oil lubricants can be applied to shock absorbers, vibration isolators and other components. These components play a role in vibration reduction and noise reduction by absorbing and dispersing the vibration energy during the operation of the train. The lubricating properties of ethyl silicone oil can enhance the vibration reduction effect of these components, thereby further reducing the noise generated by the train operation.
Drive component lubrication: Ethyl silicone oil can also be used for the lubrication of train drive components, such as gears, bearings, etc. By reducing the friction and wear between these components, ethyl silicone oil can reduce the vibration and noise generated by the train during acceleration and deceleration.

3. Actual Cases and Effect Evaluation
Although there is a lack of detailed cases or data directly targeting the vibration and noise reduction effects of ethyl silicone oil in rail transit equipment, based on the analysis of its physical properties and application methods, it can be reasonably inferred that ethyl silicone oil has significant vibration and noise reduction effects in rail transit equipment. In actual applications, appropriate ethyl silicone oil lubricants should be selected according to the specific type and operating conditions of rail transit equipment, and lubrication and maintenance should be performed regularly to ensure that it can continue to play a role in vibration reduction and noise reduction.

In summary, ethyl silicone oil lubricants have potential vibration and noise reduction effects in rail transit equipment, and their physical properties and application methods are conducive to achieving this effect. However, in order to more accurately evaluate the vibration and noise reduction effects of ethyl silicone oil in rail transit equipment, more experimental research and data collection are needed.