GF82.10-P-2001P Xenon Headlamp, Location/Function
GF82.10-P-2001P Xenon Headlamp, Location/Function
MODEL 203 as of 1.7.02
- with CODE (614) Bi-xenon headlamp unit
- up to Model Year 8
1 Xenon lamps
B Cover
E1 Left front headlamp unit
E1l1 Left high beam solenoid
E1n1 Xenon headlamp control module
E1n2 Xenon headlamp ignition module
E2 Right front headlamp unit
E2l1 Right high beam solenoid
E2n1 Xenon headlamp control module
E2n2 Xenon headlamp ignition module
The bi-xenon light technology is located in the outer headlamps. When switching on the low beam the Xenon headlamp control modules (E1n1 and E2n1) actuate via the control voltage within a few ms the Xenon headlamp ignition modules (E1n2 and E2n2).
A high-voltage surge from the ignition device ignites the xenon lamps, and in doing so an electric arc is formed between the electrodes. If arcing is detected with sufficient stability, the control electronics switches the Xenon headlamp control modules (E1n1 and E2n1) to output limiting mode.
The light generated as previously in a gas discharge lamp (D2S lamp) is not reflected in the bi-xenon headlamp, but rather sent straight through lens optics. A voltage converter generates the required voltage for the reliable function of the xenon headlamp.
For technical reasons the xenon lamp has a timed startup characteristic. After switching on, 50 % of brightness is reached after 1 to 2 s and after approx. 30 s the full brightness.
For the low beam the bottom half of the light beam is covered by a shield. This prevents oncoming traffic from being dazzled. When switching over to high beams the shield is pivoted away downwards so that the entire light beam is available. Control of the cover is done electro-mechanically via the left and right high beam solenoids (E1l1 and E2l1).
In order to make the extremely bright light more acceptable to other road users, the lens aperture area with its dotted characteristic is optically enlarged. This is possible on account of the specially formed areas which surround the lens.
