Design and work of a gas-discharge headlight. Mazda 3 (since 2003 release)
Mazda 3 since 2003
1. Operation and maintenance of the car
2. Engine
3. Transmission
4. Running gear
5. Steering mechanism
6. Brake system
7. Onboard electric equipment
7.1. General information
7.2. System of power supply
7.3. System of lighting
7.3.1. The forward combined lamp
7.3.1.1. Main characteristics
7.3.1.2. Gas-discharge headlight
7.3.1.3. Design and work of a gas-discharge headlight
7.3.1.4. Function of detection of malfunctions
7.3.1.5. System of automatic alignment of headlights
7.3.1.6. Work at change of loading of the car
7.3.1.7. Work at the movement of the car
7.3.1.8. A control system of lighting at the movement of the car
7.3.2. The back combined lamp and the internal combined lamp
7.3.3. Removal and installation of the forward combined headlight
7.3.4. Adjustment of light of headlights
7.3.5. Removal and installation of a lamp of a headlight
7.3.6. Removal and installation of a gas-discharge lamp of a headlight
7.3.7. Removal and installation of a lamp of a parking lamp
7.3.8. Removal and installation of the forward index of turn
7.3.9. Removal and installation of the side index of turn
7.3.10. Adjustment of light of a forward fog light
7.3.11. Removal and installation of the back combined lamp
7.3.12. Removal and installation of the internal combined lamp
7.3.13. Removal and installation of a lamp of illumination of registration plate
7.3.14. Removal and installation of an additional signal of braking on a back spoiler
7.3.15. Removal and installation of a forward lamp of illumination of salon
7.3.16. Removal and installation of the trailer switch of a door
7.3.17. Removal and installation of the lighting lamp of an ashtray
7.3.18. Removal and installation of a lamp of illumination of the lock of ignition
7.3.19. Removal and installation of a lamp of illumination of a ware box
7.3.20. Removal and installation of operating lighting switch on the dashboard
7.4. Screen wipers and windscreen washers
7.5. Immobilizer
7.6. Checks of electric equipment
7.7. Tables
8. Body
 








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7.3.1.3. Design and work of a gas-discharge headlight

The impulse of high voltage (alternating current about 25 000 V) from the control unit of a gas-discharge headlight moves between conclusions of its lamp, initiating the gas category in xenon which filled a lamp.
At xenon excitement temperature in a lamp of a gas-discharge headlight rises, evaporating mercury, and there is an electric arch.
Mercury and electric arch cause the further growth of temperature in a lamp, iodide evaporates and decays, atoms of metal give the saved-up energy, producing light.

Fig. 7.16. Design of a gas-discharge headlight: 1 – In +; 2 – control unit of a gas-discharge headlight; 3 – conclusion; 4 – lamp of a gas-discharge headlight; 5 – gas xenon; 6 – metal atoms; 7 – iodide; 8 – mercury; 9 – light





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7.3.1.2. Gas-discharge headlight
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7.3.1.4. Function of detection of malfunctions




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