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Material design and process control are all online, long and comfortable, and all-round disassembly analysis.
Recently, in the background message, many netizens mentioned Changyida, which caused great concern. At the same time, I also saw many netizens' doubts, which were roughly summarized, including four dimensions: safety, comfort, process quality and maneuverability. Whether it can compete with joint venture vehicles of the same level is a question raised by most people.

To this end, we specially found an Anyida, let's take it apart and see what it looks like as a domestic family car with a class of 654.38+10,000.

safe

For a car, safety is the hard index of buying a car now, and it is the foundation of everything. Some people think that loud and heavy door closing is a symbol of safety, which is as big a misunderstanding as saying that Japanese cars are unsafe because of their "thin skin". What really protects safety is the structural parts inside the "skin", such as beams, longitudinal beams and energy-absorbing structures. After Chang 'an Yida was dismantled, it can be clearly seen that the energy-absorbing structure design is perfect. In the shotgun part, it is a complete structure connecting the longitudinal beam and the transverse beam. Here, explain why it is called a shotgun. Engineers vividly named it shotgun, and many people called it "like the bridge of the nose". In this part, many Japanese cars are actually disconnected and can't completely transfer the impact to the whole body to absorb energy.

From the B-pillar to the front, the force transmission structure is long and comfortable, and the thermoformed steel is basically used, which can effectively protect the occupants in the car. In addition, the thickness of the front cross beam has reached 1.7 1.3 mm, while most Japanese cars are about 1.3 mm. From the perspective of passive safety, Chang 'an Yida can stand scrutiny in both design and materials.

comfortable

I believe that the first concern of many people when buying a car is comfort. Safety is of course important, but cars are for driving after all. If you are uncomfortable riding or driving for a long time, the overall experience will be greatly reduced. First of all, comfort is divided into several dimensions, besides touch, there is also comfort of sound and vibration, which is what we call NVH value. If NVH is not good, even comfortable seats and luxurious interiors will cause discomfort.

The sound insulation material is the key point to realize the silence in the car. After disassembly, it can be intuitively seen that the materials for long comfort are first of all-many, and enough materials can even be loaded on two Japanese cars of the same level. First, quantity wins, and more cars are wrapped with sound insulation cotton and vibration plates, so as not to leave gaps for noise and vibration as much as possible. In fact, noise is the first factor of ride comfort, followed by different sound insulation materials used in different body areas. For example, the floor of the car body is made of anti-vibration board+sound insulation cotton, and the door panel is made of thick sound insulation cotton+foam material, because different sounds and vibrations are absorbed by different materials. At the same time, we can find that most of the materials used by Changyida are environmentally friendly, which greatly guarantees the health of a family.

Secondly, ride comfort. People who drive or ride for a long time should know that the softness and comfort of the seat are not necessarily proportional, and good support and ergonomic design are the key points. Long and comfortable seats are integrated, which is more ergonomic in supporting shoulders and waist. Generally speaking, where there is support, there must be support, and the comfortable place should be soft and elastic.

Process quality

Cars are definitely big for ordinary families. Many people are also concerned about quality and technology. When leaving the factory, the difference of body sheet metal parts can represent the equipment technology of a car. Changan Yida can control the gap error within 1 mm, and the gap is still within 1 mm in the intersection area of headlights, front bumper, front fender and hood of the test assembly process. After actual measurement, the gap error of the whole vehicle is less than 0.3 mm, and the average thickness of long and comfortable car paint is1/kloc-0.

In addition to the surface craftsmanship, the places that consumers can't see also represent the craftsmanship of a car. When the body panel is removed, many body welds can be seen. The more solder joints, the higher the fuselage strength and process standards, and the higher the cost. The first step of changing many mass production cars into racing cars is to strengthen the body, and the most important and basic work is the welding work on the body, which can obviously improve the rigidity of the body and reflect the driving experience.

operate

The same manipulation is also an unavoidable topic in driving. The design and material of the chassis can show the driving quality, vehicle positioning and sports performance of a car. Good suspension settings can make drivers feel comfortable and provide high driving pleasure. The long and comfortable suspension form is designed by the front McPherson rear torsion beam.

In A-class cars, the torsion beam is the most common structure, and the torsion beam is not bad, and many advantages are not available in multi-link suspension. First of all, cost savings are certain. Torsion beam suspension has no complicated connecting rod design, so it doesn't need a subframe, which saves a lot of cost. The price of vehicles is directly reflected here, and the ultimate benefit is consumers. Space performance is another big advantage of torsion beams. If Changyida adopts multi-link suspension with high keyboard value, its trunk space, flatness and rear space are disastrous, and the sitting posture in the rear row will also be affected, which will inevitably discourage a lot.

In order to make the vehicle comfortable and maneuverable, the upper limit of the torsion beam is not as high as that of the multi-link rod, but this cannot hide the advantages of the torsion beam, because it does not need a subframe or a gear train frame, and two bushings are added for every additional link rod, which can well control the cost and expand the space. Torsion beam is the best scheme in this class of vehicles, and it also has some excellent qualities that multi-link suspension does not have. Through fine-tuning, the effect can actually far exceed the expectations of users.

First of all, the thick longitudinal arm of the torsion beam can bring good rigidity, which is not available in multi-link suspension. By setting the bushing, it can also deliberately cause oversteer. The so-called "tailing" is what I mean. In general, the first impression of vehicles with torsion beam structure is that they are more flexible and easier to drive than multi-link suspension, which is the advantage of torsion beam. By setting the flexible bushing, the change of the toe angle of the rear wheel will increase, forming a passive rear wheel steering effect, which is an obvious advantage, especially in the transient response test of piles and elk. In addition, the use of bushings is particularly important at the connection point of suspension and the connection point between suspension and car body. The long and comfortable bushing design leaves a gap, which can absorb frustration and vibration when bearing longitudinal force, but it can play a good supporting role when transverse.

summary

For a100000 A-class car, the appearance of Chang 'an Yida has strengthened the strength of Changan brand in this level of products, and basically satisfied all the imaginations of a family for family cars. Friends who have recently changed cars or bought new cars may wish to pay attention to this car. In addition, for the netizens who paid attention to this car before, I believe you can also eliminate many concerns through this article. Please leave a message at the bottom of the screen for more questions, and I will reply one by one.

This article comes from the author of Yiche No.30, and the copyright belongs to the author. Please contact the author in any form. The content only represents the author's point of view and has nothing to do with the car reform.