How often should the car air filter be changed, and how to alleviate the harsh noise of the car at h

1. Engine noise.

In addition to the mechanical sound emitted by the engine block, it also includes the air intake system noise, that is, the high-speed gas enters the cylinder through the air filter, intake pipe, and valve, and during the flow process, a strong aerodynamic noise is generated. (Mainly generated and transmitted through: front fenders, hoods, fire barriers, exhaust pipes).

2. Tire noise.

The general tire noise is mainly composed of three parts: one is the air flow between the tire pattern and the air disturbance around the tire; the second is the tire vibration noise caused by the vibration of the carcass and the tread part; The third is the road noise caused by uneven road surface. (Mainly via:.)

Four doors, trunk, front fenders, front wheel arc generation and transmission).

3. Air noise.

One is wind noise, which is the noise caused by the pressure change caused by the separation of the air flow around the body; The second is air leakage, or suction sound, which is the noise generated by the interaction between the inhalation of the cab and the body gap and the airflow around the body; The third is other noises, including cavity resonance. (Mainly through: four door sealing gaps, including integral thin steel plate generation and transmission).

4. Driving road noise.

Road noise is generated by the noise caused by the wind cutting in and the chassis vibration driven by the vehicle when driving at high speed, and the sand and gravel on the road will also produce noise from the chassis of the car, which is the main road noise (mainly through: four doors, trunk, front fenders, front wheel arc generation and transmission).

5. Body structure-borne noise.

It is mainly affected by two factors, one is the vibration transmission mode of the body structure, and the other is the noise generated by the metal components on the body due to the vibration generated by the inside and outside. (Mainly through: noise enters the car, superimposed, reflected).

It's useless, it's all about it. It's that the maintenance oil you use is not good, although the semi-synthetic engine oil is used by more people, but I still won't use it myself, I used the semi-synthetic engine oil before, the driving noise is too much, and the use feeling is too bad. Later, I changed to GT Magic Red engine oil, and the noise of the car was much smaller, and the engine was very noisy before I often ran at high speeds, and now I have been driving silently.

Engine oil contains liquid molybdenum, and the mute effect is much better.

Audi cars need to use fully synthetic engine oil, the air filter is to be changed to the number of kilometers, and the noise is to find the reason, and the air filter has nothing to do with it.

The car air filter is replaced once every 30,000 kilometers, and the air filter is unqualified, and there will be noise during acceleration.

The car air filter is changed every 20,000 kilometers, and how to alleviate the harsh noise of high-speed cars: open the inner circulation and install soundproof cotton. Hope.

If an abnormal sound occurs during acceleration after replacing the air cleaner after the car is replaced, it may be caused by the following reasons:

1.Filters are not installed correctly: After the filter is replaced, if it is not installed correctly or is poorly sealed, it will cause too much air to leak into the engine, which will affect the normal operation of the engine.

Please make sure that the air cleaner is installed correctly, that the connections are tight, and that there are no loose or notched air filters.

2.Mismatch of filter type: Each car has its own air filter specification and model, if the replaced air filter does not match the vehicle, it may cause too much or too little air to be inhaled, which can cause the engine to lose balance and produce abnormal acceleration sounds.

Please make sure that the replaced air cleaner is compatible with the vehicle model.

3.Other fault problems: After replacing the air filter, if there is still abnormal acceleration sound in Wu Ranguo, there may be other fault problems, such as air leakage of the air intake system, air flow meter failure, throttle failure, etc., it is recommended to check in time.

If you are unable to determine the cause, it is recommended that you take your vehicle to a designated repair shop for inspection and repair.

The car air filter is an important part of the car engine, which is used to filter the air entering the engine and keep the engine clean and running normally. If the acceleration sound is not right after the car air cleaner is replaced, there are several possible reasons:

1.Improper installation of air cleaners: If the air cleaner is not installed correctly, it can lead to insufficient air flow and the engine not functioning properly, resulting in incorrect acceleration sound.

2.Poor quality of air cleaner: If the replaced air cleaner is of poor quality, it may lead to insufficient air flow or poor filtration, which will affect the normal operation of the engine.

3.Failure of other components: If the acceleration sound is not correct after the replacement of the car's air cleaner, it may also be the failure of other components, such as the air flow sensor, throttle, etc.

If the above situation occurs, it is recommended to go to the car repair shop for inspection and repair in time to ensure the normal operation and safe driving of the car.

The reasons are as follows: the quality of the filter element is not good enough, the medium gap is too large, the density is too small, the filtration is not sufficient, the air intake is too large, and the engine is over-burned with gasoline after a large amount of air intake, so there will be a louder sound than usual.

The acceleration sound is wrong after the car air filter is replaced? After changing the air filter, the mixture ratio of the engine and the oil supply has changed, the acceleration performance has also changed, and the sound has also changed, which is normal and Nasdaq.