How to resolve car engine noise? Chongqing Tuohang Automobile U-shaped groove sound insulation

Construction of the groove: Remove the fixing screws of the wiper, shake it up and down to take off the wiper arm, and then remove the groove cover. The cover is fixed with screws or plastic buckles. Try not to dismantle it. Then remove the wiper motor and linked rocker arm mechanism. For ordinary cars, it only requires 1 screw. Unplug the plug connecting the wiper motor and remove it. Also clean the groove first and glue the smooth side of the sound insulation cotton. One thing you need to pay attention to with the shaped trough is not to block the air inlet that circulates inside and outside the car. The air inlet is usually on the passenger side. Also, don't block the drains on both sides of the shaped trough, otherwise the shaped trough will become a pool. Some car models cannot open the slot, so don't do it, such as Alto cars.
I don’t know if car owners have this feeling. It’s just that when the weather is hot recently, if I just open the window, I feel a kind of heat in my feet, as if there is hot air below. Through observation, it turns out that the cause is the air inlet of the air conditioner. , because the air inlet is on the right side of the molded groove. If the fan is not turned on, the molded groove will be heated by the engine compartment. The temperature of the groove will definitely enter the air conditioner air box through the air inlet, which is the big box at the foot, so it is felt that the fan is not turned on. It's hot down there. Therefore, the sound insulation of the groove will not only block part of the engine noise, but also have a certain effect in heat insulation.
If the engine is noisy, it is recommended to use grooves and sound insulation on the front cover. The sound insulation effect is very obvious and it can also protect the car paint! Some friends may worry that making the sound insulation thick will be counterproductive. If you have the opportunity, take a look at the sound insulation of high-end cars such as Mercedes-Benz and BMW. It is much thicker than what we make. I’m tired after talking so much. If I have any shortcomings, please correct me and communicate with me.
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