The author is still full of curiosity about the various new things in the automotive industry, although most of the knowledge can be “self-digested and self-convincing†– for example, the turbocharged engine is for global emissions demand; the electronic power steering is for More comfortable and more fuel-efficient technology products...
But the author is still full of doubts about the non-halogen car headlights. For the car manufacturers, there is nothing extra on the body. The "capitalist" is not a welfare. Even if a screw is money, it is a cost. Then the problem is coming - why the era of xenon lamps is almost certain. The headlights cleaned the device, and the LED headlights disappeared in large areas. Xiaobian came to discuss with you.
What is LED headlights?
The LED headlights refer to the headlights, which are clearly seen! All the light sources of the "headlights" use LEDs. Xiao Bian believes that most of the cheap models are still using ordinary halogen headlights, and better models will use xenon headlights. In 2008, "Light Factory" Audi first used LED width light on A4, first opened the era of LED headlights. After that, many manufacturers began to follow up and began to use LED width lamps. Now Europe has even begun to enact legislation. For driving safety, all models on sale must be equipped with LED width lamps. However, all manufacturers only stayed at the LED width lamp step and did not further innovate.
Until the launch of the Audi A8 and the second-generation Mercedes-Benz CLS in 2010, the true meaning of LED headlights appeared in people's sights. For example, Mercedes-Benz CLS headlights use a total of 71 LEDs, 16 low beam lights, 8 high beam lights, 13 turn signals, 22 width lights, 2 corner auxiliary lights, and 10 others. Xiao Bian believes that almost all of the features of the full LED headlights surpass the existing Xenon headlights.
What is the use of the headlight cleaning device?
The headlight cleaning device means that there is a water outlet below the headlight, which can clean the dust and dirt of the headlight at any time. This feature is available in some of the most advanced models.
During the night or when the car is driving in the dark, rain and dust will seriously affect the illumination of the headlights, which will cause the driver's line of sight to be affected. For driving safety, there is a big hidden danger. Therefore, the high-pressure headlight cleaning system device solves the problem of continuous clear illumination of the headlights "simple" and efficiently. According to a small series of investigations, laws in many countries now require that a headlamp cleaning system be installed on a car.
â— Guess one: LED is brighter and does not require "headlight cleaning"
According to a small series of investigations, this is a widely circulated statement: Xenon lights and lamp cleaning are European standards. Xenon lamps are gas sources. Although the brightness is very high, the penetration of a certain amount of dust is not as strong as that of LED lamps. If there is other dirt on the xenon lamp during operation, the light is scattered, so the xenon lamp needs to be cleaned and the LED headlights are not needed.
â— Guess 2: Because the "headlight cleaning" mandatory standard is different inside and outside
The domestic and international standards are different, and the LED standards are different. According to a small series of investigations, for example, Ford's Sharp is a xenon lamp configuration in the United States and Canada, but there is no headlight cleaning device. If China has it, it is China's mandatory standard.
â— Guess three: China GB believes that the brightness is not enough, you can not use the "headlight cleaning"
Many of the cars sold in China are stipulated by GB (abbreviation of national standard). The most famous national standard for automobiles is GB7258, which is not included in all kinds. For example, the GB of the light is GB4785, which clearly stipulates that if the low beam uses a light source with a luminous flux of more than 2000 lumens, it must be equipped with a headlamp cleaning device that meets the requirements of GB21260.
Therefore, (this project is only a small series of existing data surveys and analysis guesses) it is conceivable that as long as the luminous flux of the light source exceeds 2000 lumens, a headlamp cleaning device must be provided. Since GB stipulates that the source does not require 2000 headlights and does not require a headlamp cleaning device, then it is simple...
Because the headlight cleaning device is only related to the low beam light, as long as the low beam light source brightness exceeds 2000 lumens - it must be matched, otherwise it will not be certified by the vehicle, but this can not be sold; however, the headlamp is not standard. The brightness of the LED of the cleaning device does not standardize the xenon setting of the headlamp cleaning device, so the headlamp cleaning is omitted.
Next, is it necessary to test which LED headlights and xenon headlights are brighter?
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