Winter noise reduction has a knack body sound insulation should be interpreted J2543 with caution

The owner liu recently very depressed, J2543 into the winter, the car noise increased, oneself before the 4 s shops have for vehicle replacement winter oil, although activated when the noise is down slightly, but the driving there is still no obviously improved. To this, the expert said that the automobile noise mainly divided into engine noise, resonance noise, wind noise and tire noise, oil change can only reduce the engine noise, but for other noise is powerless, winter to car noise reduction, in fact is a system engineering.

Engine carbon to remove
As a car "heart", engine while providing abundant power, but it brings noise is also the most direct. Winter car engine noise slants big, is usually low temperature make the oil viscosity change is high, in the car boot lubrication effect caused by the bad. Moreover, the cold weather also makes engine need to run for a period of time to reach the best operating temperature, it also increases the engine J2543 noise. If the replacement winter oil, engine noise still obvious slants big, and the vehicle is a distance does not decrease, it will need to consider whether or not the engine carbon deposit problems.
Xian specific card motor sports club directors XuZhi said carbon deposit is generally fuel or into the combustion chamber of the lubricating oil from the incomplete combustion. In the city traffic, due to the crowded road conditions make it always in stop-and-go state, engine can't keep high speed operation, fuel incomplete combustion produces a residue in the long run it will form carbon deposit, it is difficult to avoid. General ran train high speed, let the engine keep high speed driving a period of time can play the role of carbon removal.
In addition to removing carbon from the "source" up noise reduction method, can also by blocking transfer to Ds 708  the noise reduction. For example for nacelle firewall do acoustic processing, with a layer of high temperature resistant, flame retardant composite materials to directly from the engine to reduce the noise of the transmission bridge. If his car engine cover no sound insulation cotton word, also can go to add a layer of sound insulation cotton, so also can rise to reduce the effect of noise.
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