- Open the window / sunroof during driving, the windy noise is loud
1) When the window / sunroof is opened during driving, the passenger cabin has become a cavity, where the car body surface and the cavity will form a typical acoustic resonance model and produce a noise;
2) When the window / sunroof is opened, the seal system of the whole vehicle is ineffective to a certain extent, which cannot play the role of isolating the external sound source from the passenger cabin.
3) When the window / sunroof is opened, the sound is directly actuated by the passengers' ears, and the subjective feelings of passengers become stronger.
Therefore, open the window or sunroof when driving will cause greater wind noise is a normal phenomenon. We recommend you not open the windows / sunroof during driving, especially at high speed driving, which is also a good driving habit that can save fuel consumption.
- When driving in the following circumstances, the whole noise such as tire noise and wind noise is louder.
1) Driving on cement road: when driving on cement road, the tire noise will be louder than that of asphalt road, because the asphalt pavement is honeycomb like, compared with cement pavement, not only it has less contact area with the tire, but also the honeycomb structure itself has the sound-absorbing effect.
2) When there are obvious reflectors around (for example, through tunnels): under normal circumstances, the noise generated by vehicles during driving will be radiated and dissipated to the surrounding area, but when there are obvious reflectors around the vehicles, the noise which should have been reflected to the surrounding area will reflect and direct towards the passenger cabin.
3) Driving in the windy weather: in the design and manufacturing process, our vehicles have experienced numerous wind tunnel tests and design verification, but we focus on the wind direction of 0 to 20 degrees. Without doubt, when driving in the windy weather, there will be more lateral wind disturbance, and when the lateral wind disturbance is greater than 20 degrees, it will generate a larger wind noise than normal driving conditions; at the same time, when driving against the wind, the air flow speed will be the wind speed plus the car speed, which will also produce the wind noise greater than the normal conditions.
4) Ultra high speed driving (greater than 160KPH): one of the basic characteristics of wind noise is that it increases with the increase of speed. The wind noise generated at high speed driving is certainly louder than that at low speed. At the same time, the ultra-high speed driving is not conducive to safety, which is also prohibited by law.
5) Driving on a special road, for instance a deceleration belt: when driving on special roads for instance deceleration belt, the road surface is deliberately designed to actuate the vehicle vibration and sound, so as to arouse the driver's attention.
6) Tire pressure is too high: when the tire pressure is too high, it will cause the cavity resonance of the tire and the increase of the vibration of the road to the car body, which will cause the increase of the tire noise.
7) Cold weather: in cold weather, the hardness of the car's sound insulation and vibration isolator will increase to some extent, thus causing the noise to increase.
- Open the window / sunroof during driving, the windy noise is loud
1) When the window / sunroof is opened during driving, the passenger cabin has become a cavity, where the car body surface and the cavity will form a typical acoustic resonance model and produce a noise;
2) When the window / sunroof is opened, the seal system of the whole vehicle is ineffective to a certain extent, which cannot play the role of isolating the external sound source from the passenger cabin.
3) When the window / sunroof is opened, the sound is directly actuated by the passengers' ears, and the subjective feelings of passengers become stronger.
Therefore, open the window or sunroof when driving will cause greater wind noise is a normal phenomenon. We recommend you not open the windows / sunroof during driving, especially at high speed driving, which is also a good driving habit that can save fuel consumption.
- When driving in the following circumstances, the whole noise such as tire noise and wind noise is louder.
1) Driving on cement road: when driving on cement road, the tire noise will be louder than that of asphalt road, because the asphalt pavement is honeycomb like, compared with cement pavement, not only it has less contact area with the tire, but also the honeycomb structure itself has the sound-absorbing effect.
2) When there are obvious reflectors around (for example, through tunnels): under normal circumstances, the noise generated by vehicles during driving will be radiated and dissipated to the surrounding area, but when there are obvious reflectors around the vehicles, the noise which should have been reflected to the surrounding area will reflect and direct towards the passenger cabin.
3) Driving in the windy weather: in the design and manufacturing process, our vehicles have experienced numerous wind tunnel tests and design verification, but we focus on the wind direction of 0 to 20 degrees. Without doubt, when driving in the windy weather, there will be more lateral wind disturbance, and when the lateral wind disturbance is greater than 20 degrees, it will generate a larger wind noise than normal driving conditions; at the same time, when driving against the wind, the air flow speed will be the wind speed plus the car speed, which will also produce the wind noise greater than the normal conditions.
4) Ultra high speed driving (greater than 160KPH): one of the basic characteristics of wind noise is that it increases with the increase of speed. The wind noise generated at high speed driving is certainly louder than that at low speed. At the same time, the ultra-high speed driving is not conducive to safety, which is also prohibited by law.
5) Driving on a special road, for instance a deceleration belt: when driving on special roads for instance deceleration belt, the road surface is deliberately designed to actuate the vehicle vibration and sound, so as to arouse the driver's attention.
6) Tire pressure is too high: when the tire pressure is too high, it will cause the cavity resonance of the tire and the increase of the vibration of the road to the car body, which will cause the increase of the tire noise.
7) Cold weather: in cold weather, the hardness of the car's sound insulation and vibration isolator will increase to some extent, thus causing the noise to increase.