25W HID Headlamp - First Series Production in Hybrid Vehicle

Paper #:
  • 2011-01-0108

Published:
  • 2011-04-12
DOI:
  • 10.4271/2011-01-0108
Citation:
Neumann, R. and Warwel, T., "25W HID Headlamp - First Series Production in Hybrid Vehicle," SAE Technical Paper 2011-01-0108, 2011, https://doi.org/10.4271/2011-01-0108.
Pages:
7
Abstract:
Due to the general requirements in the automotive industry to reduce the power consumption, fuel consumption rate and CO2 emission a new HID (High Intensity Discharge) bulb with only 25W is under development for front lighting systems. A first headlamp integrated in a hybrid vehicle is now launched as a first application in the market.The current regulation in ECE allows to get rid of the mandatory headlamp cleaning system and the automatic leveling requirement once the 25W HID bulb is applied. The reason for this is the objective luminous flux of the 25W HID bulb, which emits less than 2000 lm, a boundary defined in the regulation, where a headlamp cleaning and an automatic leveling is requested.That simplifies especially the integration in smaller vehicles and electric and hybrid vehicles.The paper describes the special design of the headlamp, the projector unit, the light performance, packaging advantages and future outlook of further applications in the near future.Opportunities to increase the overall light performance by means of this new bulb and being able to replace standard halogen headlamp solutions with 25W HID systems will be described and also compared to future LED (Light Emitting Diode) headlamps.
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