The problem of the anti-collision beam behind the car has not been said too clearly, and the problem of the door hinge has been dug up. The game "Everyone is looking for 茬" is very helpful to the popularity of car safety knowledge. However, some media are looking for a level of ambiguity. To improve, if it is not good, it is to popularize pseudoscience. Electric vehicle (BEV) refers to a vehicle that is powered by an on-board power source and uses an electric motor to drive its wheels, meeting various requirements of road traffic and safety regulations. Due to its relatively small impact on the environment compared to traditional cars, its prospects are widely optimistic. Electric Car,New Energy Electric Vehicle,Electric Used Car,Mid Size Pure Electric Vehicle Chongqing Huanyu Automobile Sales Company , https://www.cqhuanyuauto.com
The back of the anti-collision beam is very good. Although some manufacturers and the media argued that the lack of this bone on the car's buttocks will not have much impact on safety, but the layman knows that there is definitely better than nothing. As for whether there is such a beam, the difference is big in the face of the rear-end collision. There is no clear conclusion from the comparison experiment. Everyone is still slobbering.
Although it has not been said too clearly, the rear anti-collision beam is a "with and without" problem. Everyone knows that "having" is definitely better than "nothing". The door hinge is not the problem, but a better one.
Recently, a certain media exposed the door hinge "subtraction", saying that some models use "low-grade hinges", which are characterized by relatively thin, using the stamping process; some models use "high-end hinges", which are relatively thick and used. The forging process.
This is the so-called "high-end hinge"
Of course, "high-end" is not "high-end", not the focus of the door hinge. For the hinge, it is important that it is not strong enough. If it is not strong enough, it will be easily deformed when it is hit, which may cause the door to fail to open and affect the escape of the person inside the vehicle. The media found a few cars, measured the thickness of the door hinges, and divided the hinges according to the thickness. I told everyone that the thinner cars belong to the "subtraction", the meaning of the words, thinner The hinges are not strong.
The door hinge is similar to the hinge used on the door. The main function is to connect the door to the door frame, and the second is to make the door switch. The hinge on the wooden door of the house can't be solid or not. Whether it is steel, copper or aluminum, the hinge on the door, can you judge which one is more solid?
With my knowledge of the car, I feel that it is not very reliable to take a caliper and make a conclusion. Take the car body, the thick place may not be strong, but also depends on the strength of the steel used. In these years, I have seen more car advertisements. Everyone knows the concept of "high-strength steel". The A-pillar and B-pillars look inconspicuous. The strength of the steel used is often stronger than that of the stringer. It is almost the strongest of the whole car. local. By the same token, the door hinges are not strong enough, so look at what materials are used.
From the popular car-disassembly program, we also know that there is also a collision beam in the door. This beam has a "hat shape" and a "cylindrical" shape, which involves a structural problem. The same material, made into different structures, will have different strengths. The children now love to do paper bridge manuals, dozens of softly collapsed A4 papers, and paper bridges made of folds and bucks. Many people can't think of it. It's okay to stand up for an adult. There is also a structure here. knowledge.
A certain media lists the door hinges of several cars. In addition to the thinness and thickness, the structure is also obviously different. There are single pieces and two pieces of superimposed ones. If there is a long one, it has a long shape; it is fixed with two bolts. , with 4 bolts fixed. I also specially looked at the hinge of the most thick Volkswagen Tiguan. There is a connecting shaft between the two pieces. The circle around the shaft is also very thin. You look at the thick place, and when you don't know it, you will first break off from the thinnest place.
After reading this report, I specifically asked the professionals in the circle to inquire about it. Their view is that the strength and safety performance of the door hinges are not only related to the material and thickness, but also to the manufacturing process, the layout and the area under load. It is very unprofessional to determine whether a door hinge is strong by looking at the thickness. Moreover, there are national standards in this respect, and the so-called "low-grade hinges" can also be as strong as the national standard.
This kind of thickness-based approach is reminiscent of the more popular "safety with a thin skin", which belongs to the Jianghumen School of "following the feeling." After controversy, everyone gradually realized that the thin and thick steel sheet has nothing to do with safety. What really determines safety is the body structure hidden under the skin.
Whether the car is safe or not, the most reliable thing is to look at the results of the crash test, but not to hear the legend. If you want to explore the secrets of the door hinges, it is best to hit a guy from the side of the body to see which one is stronger.
The media's report on the exposure of the door hinges ends with the following sentence: "The door hinge of a car is in a grade with the Honda CRV. If a car is the same as a Japanese car, then where is the strength of a car that challenges the public?" - If this sentence appears at the beginning, people with a little bit of professional knowledge have already laughed, even if they have the patience to read the report, it is also seen as an entertainment film.
It’s a good thing to find out more about car manufacturers and expose the quality of the car. However, there is also a knowledge of finding faults, and following the feelings, if you are not good, you will take everyone to the ditch.
The main difference (difference) between pure electric vehicles and gasoline vehicles lies in the four major components: drive motors, speed controllers, power batteries, and on-board chargers. Compared to gas stations, it consists of a public ultra fast charging station. The quality difference of pure electric vehicles depends on these four major components, and their value also depends on the quality of these four major components. The use of pure electric vehicles is also directly related to the selection and configuration of the four major components.