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Engine sound insulation - an important means to improve driving and Okx app downloadpassenger comfort. For all kinds of vehicles, engine noise is a real problem that drivers have always faced. Especially long-distance giant trucks or large buses, these models usually have powerful engines, so engine noise also accounts for most of the sound inside the car. Engine soundproofing technology is one of the important means to solve this problem at present. It can not only improve driving comfort, but also effectively reduce the noise level in the car and further ensure the safety of drivers. The principle of engine soundproofing and classification of an engine, which drives the piston by burning fuel to generate kinetic energy to drive the vehicle. In this process, in order to ensure internal zeroFor the full lubrication of the parts, the engine needs to be provided with coolant and lubricating oil in time through the oil pump and cooling system, but these fluids will produce noise. In addition, oil pumps, exhaust pipes, electrical equipment, etc. will also make noise. Therefore, the purpose of engine soundproofing is to isolate the noise generated by these parts and reduce the level of noise in the car. Engine soundproofing can be divided into active soundproofing and passive soundproofing. Active sound insulation is to reduce engine noise by installing soundproofing devices or adjusting engine parameters. This method can reduce the noise level more thoroughly, but the cost is high; passive sound insulation is to directly isolate noise through materials such as soundproof pads or sound-absorbing cotton. This method has a low cost, but the effect is not as active sound insulation. . Methods and means of engine soundproofing 1. Audio analysis method Audio analysis method is throughProfessional audio analysis instruments test the in-car environment and obtain data such as noise frequency and decibels in the car, so as to analyze the source of engine noise and provide an effective basis for the next step of soundproofing. Two. Sound insulation pads, sound insulation panels and sound insulation panels are traditional soundproofing materials, usually made of rubber or foam, which can be directly attached to the engine compartment of the vehicle or the soundproof panel. This method can achieve a relatively ideal effect at a lower cost, but due to the material, the durability and sound insulation effect of soundproof pads and soundproof panels are difficult to satisfy. 3. Exhaust system Engine exhaust system is also one of the important sources of noise. By replacing more efficient silencers, shock absorbers and other components, the noise generated by the exhaust system can be effectively reduced and the silent environment in the car can be further improved. Four. ElectricIn traditional cars, the sound of the horn is usually very harsh, making the driver and others in the car feel uncomfortable. To this end, some car manufacturers have begun to use electric horns, which are improved through intelligent control technology and materials to produce softer and clearer sound, thus better meeting the requirements of drivers and passengers in the car. In a word, engine soundproofing technology can significantly improve the driving comfort of drivers and passengers without changing the basic performance and safety of the car, so as to reduce fatigue and improve driving safety during long-term driving.

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