| Even if people are not willing, but now the stage of human beings are still very that the elimination of all collision master, this time, the car body passive safety research and development is shown to be essential. The world before 50s, engineers for structural safety design of the vehicle body development idea and today are quite different, they think the car occupants have more strong Shen, in the event of a collision injury is low. Under the guidance of this idea, engineers use a variety of methods to the overall design of the body more robust. But the results are always unsatisfactory, just shortly after the birth of the dummy injury risks but showed increased gradually. All this, until January 23, 1951 was able to change, Mercedes Benz engineers BelaBarenyi in this day for the Benz Corp to apply for the name of the passenger space structure between the front and rear of the critical point of the patent. From now on this development and understanding has become the world's most car companies to develop new products based on the theory. With the collapse of the system to the development of ideas, combined with the progress of materials science, even if the majority of new cars can be lighter than the previous generation models, improve the body structure strength, safety is also growing. During the running process of the vehicle products to various sources of noise, noise generated during operation of the engine, the tire and the ground friction sound, the body crashed through the air screaming, all these need engineers according to the sound source for the difference of optimization. The body shape as an example, in the vehicle early development process, engineers will test new products using wind tunnel, in addition to considering the drag coefficient, which will produce wind noise of the details will be improved. In addition to those changes obviously in the process of optimization, vehicle development, engineers have to be improved in many normal sight, its purpose is also to quiet the car in the process of vehicle. |
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