With the development of science and technology, more advanced materials, sensor technology and computer technology are popular, Mercedes-Benz relies Sensor on its many years of accumulated experience and a lot of R \u0026 D investment, so that it can once again become a leader in the silent design.
In the world of cars, each successful brand is often able to accurately find their own position or advantage, folk widely circulated 'open BMW, sitting Mercedes', is a highly summed up the brand gene a good example. The main control Suction Control Valve of the BMW in the driving experience is impressive, and as the Mercedes-Benz car veteran, known for comfort, Mercedes-Benz is the Mercedes-Benz is the biggest recognition, so how to make the car becomes more quiet will become the Mercedes-Benz continue to explore the important field.
Wind noise is one of the most important noise in the process of car driving, and the shape of the vehicle is closely related to the source is more difficult to overcome, to overcome the high cost of a noise. Generally speaking, to have a small wind noise, as low as possible the drag coefficient is essential, and the drag coefficient is the wind tunnel (the first for aircraft research and development test) measured. Mercedes-Benz as the first own own wind tunnel test center of the car business, in the past few decades, the wind tunnel test center has been a number of transformation and upgrading to ensure that its wind tunnel testing is always in a leading position The R \u0026 D personnel through several wind tunnel tests to improve the shape of the vehicle, and ultimately fuel metering valve to the lowest possible drag coefficient level, thereby effectively reducing wind noise. With the development of science and technology, more advanced materials, sensor technology and computer technology are popular, Mercedes-Benz relies on its many years of accumulated experience and a lot of R \u0026 D investment, so that it can once again become a leader in the silent design.
The Mercedes-Benz Technology Center introduces an air acoustics wind tunnel laboratory that produces winds up to 265 km / h and ensures that the airflow is always at a very low background noise level (almost no sound can be heard at 140 km / h) , Making the wind tunnel into the world's most quiet air acoustic wind tunnel, the center of which is a 12-meter-diameter rotating platform, you can achieve ABS Sensor the test vehicle driving direction and the direction of the air between the different angle, simulate the actual driving The process may encounter crosswind conditions, and make it around the vehicle layout of a series of aerodynamic sensors and noise collection of the microphone and other equipment possible.
By studying the air flow in the air acoustics design for the door pressure, Mercedes-Benz R \u0026 D personnel can design the optimal door structure. At the same time, in order to be able to meet when the vehicle through the bridge, driving at the seaside or beyond the large truck when the door suction when the door is not pulled too much distance, Mercedes-Benz with a special form of sealing to ensure that the car has always maintained Higher noise level. Vibration noise, in the control of noise sources and sound insulation, Mercedes-Benz also spent a lot of effort: the engine uses a new three-point suspension fixed way to improve the stent for the engine shock absorption; closed seat belt retractor design , The elimination of the potential abnormal sound; the use of fabric fillings in the car and the arch of the wheel, in order to isolate and absorb high frequency noise from the road; the design of the front compartment isolation firewall is designed to further reduce Throttle Position Sensor the Engine compartment into the car noise level; in some key areas to increase the thickness of the plate, while in the B column and C column area has been improved and so on.
'The faster the car, the car's mute effect advantage becomes more obvious,' This is from the Mercedes-Benz R \u0026 D personnel self-confidence. Because Mercedes-Benz has decades of experience in wind tunnel testing, coupled with the new air acoustics design facilities put into use, so Mercedes-Benz in the quiet design was able to fully ahead of other brands, to create the world's most quiet car. With the continuous development of signal processing technology, Bose as the representative of the professional audio company launched the active noise reduction technology is to challenge the traditional silent design.