OUR VEHICLE FROM 2015
So far it has participated at the EducEco Challenge in Colomiers, France and the Shell Eco-marathon Europe. It has shown its reliability and efficiency at both competitions successfully. At the EducEco it finished all test and competition runs and at the Shell Eco-marathon it finished all test and 3 out of 4 competition runs.
eLi15 was modified for the EducEco competition due to differences in the regulations. At the EducEco the battery of eLi15 was supported by silicon solar panels, while we used Gallium-Arsenic at the Shell Eco-marathon. Even the motor controller was different. We tuned our motor controller from the previous seasons for the EducEco and developed our own for the Shell Eco-marathon.
eLi15
The Technical Features of the Vehicle
Key Data
Chassis
Power Train
Suspension System
Key Data
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Mass (ready to drive) in kg
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Design speed in km/h
Monocoque made from carbon fibre reinforced plastic (CFRP)
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
Specifically designed electric motor
Chain transmission
Self-developed motor controller
Communication via CAN-Bus
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Nominal power in W
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Power consumption while maintaining on flat surface in km/h and W
Chassis
CFK Tooling of all parts using the VAP process
Chassis parts manufactured with prepreg technology
Monocoque:
- Integral design for enhanced stability
- Weight without attachement parts 7 kg
- Aerodynamicyally optimized shape
17 mm aluminium 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 attachements made of CFRP
Suspension System
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