eace09

The eace09 builds technically on its predecessor, but still plays in a completely separate league. Since the eace08 was a completely new development, but the potential of its concept was far from exhausted, we decided to rework the assemblies throughout and optimize the vehicle's performance. Essential components in particular, such as the monocoque, the battery and the aerodynamics package, have been completely reworked and redeveloped. All in all, this makes the eace09 a very well-rounded race car.

Numbers. Data. Facts.

Electronics

Highly integrated LV system
HV system with 80 kW power
In-house developed battery management system (HV and LV) in master-slave design
In-house developed control electronics (ECU) in modular design
Wide range of sensors like IMU, Heidenhain ECI1118 etc.
In-house developed central processing unit (Vehicle Control Unit)
Two highly integrated control unit boxes (rear and front) with modular mount design
1 MBaud CAN bus system for analysis and internal communication
Weight of the harness: 1.3 kg

Driver Interface

Drivetrain

Suspension

Monocoque

Aerodynamics

Technical innovations

Monocoque

In the latest evolutionary stage of our monocoque, we have decided to retain the raised nose implemented last year and the associated flow optimization of the underbody. So further changes were made to the existing geometry through improved design until we reached a torsional stiffness of 5500 N/° and a weight of 16.9 kg. In addition, SLM printed inserts are now used for bolts on the monocoque, which gave us the opportunity to reduce bolt lengths and optimize force transmission into the monocoque.

Aerodynamics

The aerodynamics package has been further optimized for cornering this year and now provides 93 kg of downforce at a speed of 16.11 m/s. In theory, this would allow the eace09 to hit the ceiling from around 90 km/h without falling off. A cooling concept for the powertrain, including the battery, also wants to be integrated into the aerodynamics package with as little loss as possible. We have also done development work here and, above all, significantly increased the mass flow in the system compared with the eace08.

Drivetrain

As part of the drivetrain, our coupled planetary gear units have been further reduced in axial direction, while their fatigue strength has also been increased. The vehicle dynamics control system has also been further improved and now ensures even more intelligent, wheel-specific power distribution. The efficiency of recuperation has also been improved, which now provides us with a total capacity of up to 140%.