A few days ago, Dongfeng Peugeot new 4008 completed more than 300 hours of extreme high-temperature lighting test in the "High Temperature and High Humidity Sunshine Simulation" challenge of China Automobile Research. During this period, the paint was exposed to the sun and did not discolor, the gap change value of the interior and exterior parts was twice the industry average, the VOC volatility in the cockpit at high temperature was lower than the national standard for normal temperature, and the test was exceeded by automotive grade electronics and electrical appliances.
In the high-temperature light test chamber at China Automobile Center, the test chamber uses 24 German Honle light sources to form a full spectrum sunlight simulation system. During the test, the temperature in the cabin was always maintained at 45℃, which is equivalent to that in the Flame Mountain area. At the same time, the irradiation intensity is maintained at 1000±100W/m², which is equivalent to the light intensity of Qinghai-Tibet Plateau at noon in summer. In actual testing, the dashboard of the new 4008 reached the highest temperature - 106.2℃, the rear door trim reached 91.6℃, the coat rack 90.7℃, the front bumper 82.2℃, and the temperature in the cockpit was 81.8℃. Under such an extreme high temperature environment, the air conditioner starts normally, the air conditioner refrigerates normally, and the multimedia system and intelligent networking system in the car are normal.
On this basis, high temperature superimposed on high-intensity UV ultraviolet rays will accelerate the aging of the car paint, causing it to lose color and crack. In order to accurately reflect the loss of light and discoloration of the car paint, this test uses the Delta E indicator in the color sensory space, the smaller the better. The color deviation of the new 4008 is no more than 0.46, and the minimum is only 0.04, and the average value is 0.20, which is far beyond the national standard 1.5.
Ultra-high temperature environment will cause thermal expansion and contraction of steel, aluminum, plastic and other materials in the interior and exterior, resulting in an increase in assembly gap. In severe cases, the vehicle will shake and damage its function. At present, the deformation gap between the whole vehicle in the automotive industry is generally controlled at 0.2mm, while the new 4008, which has experienced 300 hours of ultra-high temperature exposure, has a minimum gap change of 0.0mm and a maximum of 0.1mm, which is close to the limit range of naked eye recognition.
In addition, the TVOC of the new 4008 (total volatile organic compound ) is only 1.125mg/m³, and the high-temperature VOC measured formaldehyde content is 0.072mg/m³, which is not only lower than the national standard for automotive specifications (0.10mg/m³), but also lower than the national standard for indoor buildings (0.08mg/m³). The toluene content is 0.087mg/m³, which is not only far lower than the national standard for automotive specifications, but also meets the national standard for indoor buildings. The ethylbenzene content is 0.024mg/m³, 5 times lower than the national standard.
