After 70 years of development, China's automotive industry has reached a new milestone. Especially in recent years, the automotive industry has developed rapidly with the activity of the automobile trading market and the diversification of consumer demand. Consumers pay more attention to emerging features such as intelligence, humanized design and transformable space when choosing a car. However, behind these new trends, safety is always the most important consideration when buying a car.
In the past, domestic cars have been questioned a lot in terms of safety performance. However, after 70 years of technology accumulation and innovation iterations, the safety performance of domestic cars has been significantly improved. A recent crash test of the Besturn B70 is proof of this.
In the 100-kilometer high-speed rolling challenge, the Besturn B70 completed difficult actions such as extreme drifting, aerial speeding, and sideways driving, and then carried out a 360-degree high-speed rolling test. During the test, the model rolled over after hitting two cars in front of it at a high speed of 100 km/h, and experienced at least four touchdowns in the process. After the impact, the cockpit remained largely intact, the doors were still open normally, and the test dummy inside the car was not visibly damaged. This result is undoubtedly more convincing than any advertising campaign.
In actual driving, when encountering sudden danger ahead, the driver often instinctively operates the steering wheel to dodge, and the safety risk of the co-pilot position is greater. In this case, the key to the safety of the driver and passengers lies in the structure of the frame. The design of the frame is directly related to the safety of the driver and passengers in the event of an accident.
In order to gain an in-depth understanding of the frame structure of the Besturn B70, a detailed dismantling test was carried out after the completion of the roll test, and the body structure of the vehicle was deeply analyzed. At the same time, they also disassembled the first-generation Besturn B70 in order to compare the progress of the two generations in terms of safety performance.
The first-generation Besturn B70 has passed a series of rigorous tests before it was launched in 2006, including side pillar impact and laboratory rollover. This included a test in which the roof was subjected to a weight of almost 6 tons, and the results showed that the body was not deformed. In addition, the first-generation Besturn B70 was unveiled in the form of an anatomical car at the 9th Beijing International Automobile Exhibition, demonstrating its sophisticated system construction and sturdy frame structure, thus earning it the reputation of "urban armored car".
Now, 17 years later, the Besturn B70 demonstrated its further optimized frame structure in a teardown test. The test includes data on paint thickness and hardness, body gaps, anti-collision beam comparison, tensile strength and other aspects. Of particular interest are the impact beams, body structure, and frame hardness, which directly reflect the overall performance of the frame.
The crash beam is a key component that mitigates the vehicle's absorption of crash energy in the event of a collision. The front impact beam of the first-generation Besturn B70 is 115 cm long and 1 cm thick88 cm, designed with double-layer stamped steel plate construction. While maintaining this design, the Besturn B70 has reformed the body, shortening the length of the front impact beam to 109 cm, but increasing the thickness to 218 cm. In addition, the Pentium B70's rear impact beam has also been increased in length and thickness.
**The body structure of the Besturn B70 is based on the continuation of the first-generation double E structure at the bottom, and the stability of the frame is greatly enhanced by adding three H-shaped structures on both sides of the door frame and the roof. The extensive use of shock absorbers and four beams in the interior floor further increases the strength of the passenger compartment to cope with side impacts.
The stiffness of the frame is essential to withstand strong impacts. **Besturn B70 has 76% high-strength steel and 22% hot-stamping steel, and the proportion of high-strength steel is much higher than that of competing joint ventures in the same class, which provides extremely high crashworthiness in case of emergency. In the vehicle structure, the A, B, and C pillars are the key parts to withstand impacts, and the protection of drivers and passengers is crucial. In order to test the performance of these parts, the testers cut off the A and B pillars of the first generation and the first generation of Besturn B70 and sent them to the laboratory for tensile strength testing.
The test results show that the performance of the A and B pillars of the Besturn B70 on the sides of the main driver and passenger is not much different, which means that the driver and passengers can get a similar degree of protection during the extreme roll. Taking the A-pillar as an example, the tensile strength of the main driver is 1325MPa, while the co-driver is 1362MPa, indicating that the frame can effectively protect the driver and passengers in unexpected situations.
Overall, the stiffness and strength of the frame are like the bones of the human body, which plays a key role in protecting the driver and passengers in an emergency.
From the above data, it can be seen that **Besturn B70 has been steadily upgraded and strengthened in terms of safety, not only continuing the classic design, but also improving the details, and at the same time, the tensile strength is significantly crushed compared with the 516MPa-1531MPa of the previous dismantling of Volkswagen Lavida. This combination of persistence and innovation reflects the Relentless pursuit of safety in the Besturn B70 family.
From the first generation to the first generation of Besturn B70 has always taken safety as the core element of its development, whether it is boldly introducing real people for accident simulation operation and safety injury evaluation 17 years ago, or the fierce tumbling test after 17 years, it has demonstrated its hard core strength and evolving spirit in the field of safety. This kind of advocating and inheritance of safety makes us look forward to the future of the Besturn brand and products.