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High Purity Gases The General Trend Of Automobile Development
Jul 27, 2017

High Purity Gases The general trend of automobile development

Automotive high-pressure xenon lamp light principle is the first through the supercharger will drive 12 volts DC voltage instantaneous boost to 23000 volts of current, through the tungsten wire is not high voltage generated by the two-pole arc, through the high-voltage amplitude excitation crystal glass tube Xenon electrons free, between the two electrodes to produce a strong light source like a day, HID xenon lamp to replace the traditional halogen lamp will be the development trend of the car.

General vehicles of the original halogen headlamps need to spend 55-105w up and down the power, and HID gas discharge headlamps in the stabilizer under the stabilization of the role of running only half of the halogen, the average only 35w of electricity to supply The xenon bulb glows. As for the savings of electricity, it is equivalent to save the oil money.

  Normal HID light flux is about 2400 lumens, more than three times the ordinary halogen lamp. HID lamp color temperature from 3000k to more than 12000k; the higher the color temperature of the lamp, it is the worse the penetration of fog and rain. And in about 6000k light color is just the most white began to turn the blue color temperature, but also the closest daylight color, the highest acceptance of the human eye. This light is used in the vehicle's night lighting, can effectively reduce the driver's visual fatigue, the increase in the brightness of the lights also effectively expand the visual range in front of the car, thus creating a more safe driving conditions.

  As the HID lamp is not filament, so it will not produce filament fires and scrapped the problem, the service life is much longer than the halogen lamp, up to 2800 hours longer than the halogen lamp 10 times.

  From the arc characteristics of high-pressure xenon gas, we can see that it belongs to convective stable arc, if the xenon lamp horizontal point, the arc will bend up, the arc shape will change, photoelectric parameters will change. Especially when the convection is too strong, the arc will be serious on the floating, or even be blown out. For this reason, it is necessary to use a magnetic field to give a stable arc. For the small distance of small power xenon lamp, because of its arc is a stable transition, can be excluded. From the brightness characteristics of the xenon lamp, it can be seen that the distribution of the cathode and the anode is very uneven, but there is a cathode spot in the vicinity of its cathode, and the brightness is extremely high. To this end, the reflector bowl is designed to be used as much as possible, Utilization rate.

   Xenon lamp work in the ultra-high pressure state, and then the lamp surface temperature of up to 800 ℃, so the amount of blower in the cinema must meet the required xenon lamp speed, which can reduce the risk of frying lights, To extend the life of the lamp.

  At present, one of the reasons for the damage of the high-pressure xenon lamp is the lead wire of the xenon lamp. In addition to the manufacturer's production process to strengthen the lead wire of the lamp, the installation and the use of the power supply cable and the cap are not tightened, Increased contact resistance produces a high Joule heat (Q = I2R) when the large current passes through this point to produce a hot spot, further increasing the contact resistance of the contact point, further increasing the heat, so that the vicious cycle produces high heat and eventually burns Lamp cap (lead wire).

  Xenon lamp in the use of a period of time if found when the phenomenon of floating arc (horizontal light), turn off the lamp can turn the lamp 180 °, can overcome the phenomenon of floating arc, extend the lamp life.

   It is recommended that the new lamp can work at 70% ~ 80% of the rated current, and then gradually increase the operating current (not exceeding the specified maximum value) as needed, thus prolonging the service life of the lamp.