Scheme 1
| 1. | Ballast | 5. | Internal headlamp surround |
|---|---|---|---|
| 2. | Motor, headlamp range adjustment | 6. | Motor, high and low beam |
| 3. | Bulb connector, high tension | 7. | Moving reflector |
| 4. | Bulb |
Bi-Xenon uses gas discharge technology and is a headlamp system with moving reflectors. The system combines high and low beams in the same bulb.
It is a statutory requirement (for low beam) for vehicles with this type of bulb to be equipped with headlamps with automatic level control.
Xenon versus Halogen
Xenon
- has higher color temperature which gives a whiter light
- reflects from road signs and markings better
- has lower power consumption. (approximately 2/3).
Worth knowing
- Daylight has a color temperature of approximately 5000°K. The nearer to natural light, the easier the light is on the eye. Normal H4 bulb: approximately 3200 °K. Volvos gas discharge lamp (GDL): approximately 4200 °K
- The Bi-Xenon system also has the advantage of the high and low beam having the same color light. The human eye finds it easier to react between changes.