eLi16

eLi16 – Our vehicle for the 2016 season

 

So far eLi16 has participated at the EducEco Challenge in Colomiers, France, the Shell Eco-marathon Challenger Event in Le Mans, France and the regular Shell Eco-marathon Europe, which took place in London this year. At the Shell Eco-marathon, an additional challenge was the ascending track, eLi16 proofed here it’s reliability and efficiency once again.

Due to differences within regulations, eLi16 competed with two different variations – one vehicle with silicon solar panels for the EducEco, one without for the Shell Eco-marathon.
Also, one major innovation was the implementation of our driving automatism, which automatically adapts the vehicle’s speed and acceleration according to an optimized driving strategy.

 

Achievements in the “Battery Electric Prototype” class Shell Eco Marathon Europe

  • 3rd Place(634.7km/kWh, equals 7702 km/l Super Plus95) EducEco
  • 1st Place Overall Winner Prototype
  • 1st Place Battery Electric (1400km/kWh, equals 12184 km/l Super Plus95) 
  • Winner of „Mathworks MATLAB Awards“ for the best simulation

 

Key Data

  • Monocoque made from carbon fiber reinforced plastic (CFRP)
  • Mass: about 25 kg (ready to drive)
  • Design speed: 30 km/h
  • Propelled by an electromotor
  • Energy provided by LiPo batteries and solar cell

 

Power Train

  • Lithium-Polymer batteries as energy storage
  • Solar cells as secondary energy source
  • Battery management system
  • Nominal power: 180W
  • Power consumption while maintaining 30 km/h on a flat surface: 30 W
  • Specifically designed electric motor
  • Chain transmission
  • Self-developed motor controller
  • Communication via CAN-Bus

 

Chassis

  • CFK Tooling of all parts using the VAP process
  • Chassis parts manufactured with prepreg technology
  • Monocoque:
    • Integral design for enhanced stability
    • Weight without attachment parts 5,1 kg
    • Aerodynamically optimized shape
    • 10 mm aluminum honeycomb as sandwich material
  • Top cover-monocoque: conic flange as connecting element
  • Top cover: flange connects to monocoque; embedded solar cells
  • Crossbeam: self-supporting, aerodynamically neutral airfoil
  • Windshield: 3D formed PMMA
  • All attachments made of CFRP

 

Running Gear 

  • Complete optimization and new construction
  • 3 wheels for reduced rolling friction
  • Axles adjustable in all dimensions
  • Space saving, precise front axle steering based on Bowden wires
  • Specifically designed kinematics of the front axle for reduced rolling friction and optimal handling while cornering
  • Hydraulic disc brakes