24
2017
06

Steady weight loss strategy on Chevrolet Equinox body

    What models at the moment the most fire? It must be SUV, and in the SUV market, since the Toyota Highlander started a large space joint venture SUV war after the first shot, the joint venture SUV are thinking to fight for this market, Chevrolet is also fancy this big Cake brand, and Equinox is exactly what they have just handed out an answer, the new development + large space design + pragmatic price, it looks like the price is not bad. Since the external work in place, then the internal work exactly how? We through its body to its further understanding.

汽车之家

    

A standard global car


Speaking of domestic Chevrolet, it feels like it is more close to other US brands, of course, after all, in our hearts, most of the American cars should be tall and mighty, and Chevrolet is more for the civilian consumer demand and development Brand, you can also simply understand the "General Group civilian car brand." In the years after, the US car prices experienced a financial crisis, the crisis is to let GM understand the two truths: the future of the car must be a small displacement of the world, and must be practical, cheap; and Asia The market is precisely enough to have a "small car" experience, attention to the Asian market on the one hand can be transferred to the country is not optimistic about the sales situation, on the other hand, is to develop "global car" to do enough to prepare. So, it seems that GM's R & D department to better understand what the future needs, and Equinox, is a standard global car.


汽车之家

    

Space performance is just one of its selling points, and the concept of global R & D is really implemented in the car above a performance. Since we can enjoy the Chevrolet SUV synchronized with the United States, then what exactly did it do in the "very international range of children"? We start with the body and manufacturing.


○ General Group trend: body weight is the focus


The body is the main carrier of a car, which in addition to the need to meet the appearance of the demand, the most important aspect is that it is light enough at the same time should be strong enough. The body is light, and its fuel consumption and power performance will naturally be a certain degree of improvement, so the weight of the body, Equinox seems to be the same as other GM Group's new models, the baht will be more to reduce the weight of each gram.

汽车之家

    Like the last time we shoot the Buick new looting chassis, GM seems to be very obsessed with the "deduction hole" weight loss of this matter, which also reflects the general concept of lightweight one: to retain the original structural rigidity and Flexible case, as far as possible through the design of stealing light hole way to achieve weight loss work. In other words, the general lightweight approach seems to be "too direct", but this is the most effective way. May be in the Cadillac for such models, through the use of more aluminum alloy material will be better, after all, it is a high-end brand, and for Buick or Chevrolet these relatively close to the people of some models? A lot of aluminum alloy material will lead to a problem is the cost of rising, so that light from the price side, it is not enough people.

汽车之家

To achieve a lightweight, how to ensure body strength?


According to many people before the wrong idea, the more light the more insecure the car, in fact, there is no necessary to contact. The safety of the vehicle is mainly achieved by the design of the body structure, in a reasonable position with the appropriate strength of the material, it should be to ensure vehicle safety, or to ensure the integrity of the crew cabin key. For example, the front area is not a ride area, and because its size is longer than the side of the car, so the front area "deliberately softened", that is, do a certain energy design, so that the front part of the as much as possible Through the deformation absorption of collision energy, is to ensure the integrity of the crew one of the key, and for the A, B, C column position, the three places there is no room to collapse, so the use of ultra-high strength steel beam, Head to ensure that the crew cabin integrity is the best solution.

汽车之家

汽车之家

汽车之家

On Equinox, more than 300MPa of high-strength steel and ultra-high strength steel accounted for 83% of the entire white body. In the vehicle design, the cross-section reinforcement in the stringer is not assembled by simple calculation, and the position and shape of each section reinforcement are determined by a large number of CAE simulation calculations, Simulation of 9.5 million hours of more than one computer simulation process, the engineers have to solve the vehicle dynamic finite element analysis and NVH work, the purpose is to reduce the weight of the white body at the same time, improve the body rigidity, security and solve some Moving to bring the NVH problem.

汽车之家

汽车之家

For general use, they seem to want to make lightweight, strength and cost of three aspects of a comprehensive progress, simply from the perspective of changing the welding process has been unable to reach their needs. It is understood that at this stage GM has a patented aluminum welding technology, and used in the Cadillac CT6 body manufacturing, welding costs and traditional spot welding quite. In the future, they are still developing galvanized steel between the laser welding technology. For Equinox, as a peculiar car, the addition of these technologies seems to make the cost greatly increased, then Equinox's countermeasure is how?


汽车之家

Through the selection, structural design and manufacturing process optimization initiatives, Chevrolet Equinox done in the vehicle weight loss of 180kg case, the vehicle rigidity increased by 30%, at least in the data or worth a look.

汽车之家

汽车之家

汽车之家

How to ensure both the rigidity and safety of the body, but also to reduce the weight of the vehicle, which is a complex work. Lightweight is an important direction for the future development of the automobile industry. How to control the balance of light weight, safety and cost is the key to test the depth of each car enterprise engineer. It is also an important index to test the future technical reserve of this car enterprise The


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