Crash test slogan

During this period, many big melons appeared in the automobile industry. For example, Tesla was sentenced to "return one and lose three"; For example, after a silence of 10 months, China Insurance Research Institute "revived" again and released the latest crash test results.

In fact, in my personal opinion, C-NCAP of China Automotive Research Institute is equivalent to E-NCAP of Europe or NHTSA of the United States, while C-IASI of China Insurance Research Institute is more similar to IIHS of the United States.

American IIHS claims to be the most stringent collision test in the world, so C-IASI has its own proud aura since its birth. Compared with C-NCAP, the killer of C-IASI is to introduce 25% offset collision, and many models failed this test. Therefore, compared with the "five-star wholesale department" C-NCAP, C-IASI appeared in a large number. Many consumers are dissatisfied with C-IASI. Volkswagen Passat said.

Therefore, on the list first released after the resurrection of C-IASI, Volkswagen Passat "turned over" in 2020. This kind of "rollover" is actually disastrous for C-IASI, because people will ignore that the 2020 Passat that participated in the test is equipped with side air curtains compared with the 20 19 test model, so the occupant protection in the car has changed from the previous M to the current G.

The high reputation that C-IASI worked hard to build for many years collapsed instantly.

At this time, China Automotive Research Institute jumped out to repair the knife-on the evening of February 8, 2008 1, in the collision laboratory of Tianjin Automobile Research Institute, the full-load high-speed two-way side impact test was broadcast live for the first time in China. As far as the severity of the collision is concerned, the impact speed of the test car reaches 55km/h under the high-speed two-way side collision with full load of China Automotive Research Institute, and the test vehicle is in a driving state ... The severity is definitely not under the 25% frontal offset collision of China Automotive Research Institute.

So, what is a full-load high-speed two-way side impact? How is it different from the traditional side collision? What is its significance?

Take the C-IASI side impact test of China Insurance Research Institute as an example, only the driver's seat and the left side of the rear seat are equipped with dummies. However, in the "full-load high-speed two-way side impact" experiment of China Automotive Research Institute, dummies were arranged on four seats of the test vehicle, and the two dummies in the back seat were still "children"-this is called "full load". In this way, it can simulate the "human disturbance" scene in which the heads of passengers in the same row collide with each other and cause secondary injuries.

The biggest difference between China automobile market and foreign countries is that multi-person travel is more common in China, and the utilization rate of rear seats is higher, which is also the reason why China consumers are so obsessed with the rear seat space. Therefore, the dummy injury assessment model of "one person sitting in the front and one person sitting on the left" widely used in many international new car crash test procedures does not conform to the "national conditions of China".

In fact, the new car crash test regulations in various countries set up test items according to the national conditions of each country. For example, NHTSA in the United States has a rollover test, because there are many SUVs and pickups in the United States, and the rollover accident rate is high; Japan's J-NCAP has a braking distance test, because Japan's land area is small, and K-Car, which enjoys tax relief and convenient parking, is very popular in Japan. But this lovely car has a short-term crash zone, and its safety needs to be compensated by braking.

Similarly, China's crash test procedures should also be in line with China's national conditions.

After talking about "full load", let's talk about "high speed two-way". What is particularly emphasized here is that "two-way" and "high-speed" must be linked.

In the traditional side impact test, the test vehicle is stationary-as shown below. The reason why the test vehicle stays standing is actually very simple-the collision success rate is higher, the data is easier to collect, and it is easy to form a unified comparison. Of course, this is actually not in line with the actual car scene.

As we all know, in daily life, intersections are high-risk areas of traffic accidents, and many accidents are frontal and side collisions of vehicles. The side of the vehicle is the weak part of the whole body, and the collapse area of side collision is small, and the impact force is closest to the human body, so when a major side collision accident occurs, the losses and casualties are often greater.

Therefore, this time, China Automobile Research Institute will simulate a typical traffic accident scene in which vehicles start to accelerate to the intersection of 18.3km/h after two green lights, and collide with vehicles running red lights and yellow lights-this is the so-called "two-way". In this case, the test vehicle is no longer prohibited, but moving.

In addition, in most new car crash test programs in the world, the crash speed of the test car for side crash test is set to 50 km/h. This time, China Automobile Research Institute increased this speed by 65,438+00% to 55 km/h-this is definitely the "high speed" in the world! If the vertical speed of 18.3km/h is calculated, the comprehensive acceleration of collision is increased by 178% and the collision kinetic energy is increased by 2 1%!

With the unique seriousness of "full-load high-speed two-way side collision" on a global scale, China Automobile Research Institute has also become sulky in front of netizens all over the country. However, it is not clear whether "full-load high-speed two-way side impact" will be included in the new C-NCAP standard in the future.

In this live broadcast, the test vehicle used is 202 1 Dongfeng Peugeot 508L. Although Dongfeng Peugeot dares to agree to this live broadcast mode, which shows that it has confidence in its own products, there is still a hidden danger of "rollover" in this way. Therefore, it is false that Dongfeng Peugeot Public Relations Department is not nervous.

However, the final result made Dongfeng Peugeot breathe a sigh of relief. In the post-collision evaluation, the doors of 202 1 Dongfeng Peugeot 508L did not open during the collision, but the automatic unlocking function of the doors on the non-collision side took effect, the A-pillar and B-pillar of the vehicle had no structural faults, and the body structure remained intact. Both the side airbag and the airbag curtain burst normally, and the head contact position was located in the airbag inflation area, and neither the seat nor the seat belt failed.

As mentioned above, the comprehensive acceleration of "full-load high-speed bidirectional side impact" is increased by 178% and the collision kinetic energy is increased by 2 1% compared with the E-NCAP standard. On this premise, compared with the crash speed of 50km/h of the test car, the dynamic maximum intrusion displacement caused by the static E-NCAP side impact standard of the test car only increases by 20 mm, that is, the deformation of the car body only sinks by two centimeters, which is completely within the design range of collapse.

In the occupant injury assessment, the score rate of dummy reached 88.75%, among which the dummy injury assessment of the co-pilot plus project got full marks, and the Peugeot 508L was excellent on-site assessment, and there was no on-site rollover in the end.

Finally, let me show you a set of figures: in the whole year of 20 19, there were 37,878 accidents1,with 89,455 deaths and 43 injuries139.

No offense, just sounding the alarm.

This article is from Chejia, car home, and does not represent car home's position.