muc022

OUR VEHICLE FROM 2022

After not having built a new vehicle since 2019, we have set ourselves clear goals in the beginning of 2021. Not only did we want to build a completely new vehicle that should, in terms of energy efficiency, outperform any Urban Concept we have ever built. We also aimed to build a completely new team that should be more international and diverse, to allow for more technical innovation through intercultural and interdisciplinary cooperation. We have clearly achieved our goals.

The new vehicle, muc022, is the result of more than 18 months of development, design, production, and testing. With an outstandingly successful participation in the efficiency competition Shell Eco-Marathon 2022, this car shows how a hyper-efficient urban vehicle could look like. Furthermore, we have successfully integrated an autonomous driving system that should, in the future, make driving even more energy efficient.

Key Data

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Mass in kg

CFRP rims:

  • -50% weight compared to previously used aluminum rims
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Maximum speed in km/h

System Voltage:

  • 48V, monitored by self-developed BMS
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km/kWh (kWh/100km)

Length/Width/Height:

  • 3400mm/1200mm/1000mm

Electrical

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Nominal power in W

Motor:

  • Permanent magnets synchronous motor (PMSM) Motors┬á
  • 2 x 440W

Motor Controller:

  • Gallium nitride frequency inverter
  • MTPA current regulator

Communication System:

  • Bus communication over CAN

Display:

  • LCD Memory Display

Vehicle Body

Better Material: 

  • Carbon Fiber Composite Material using only Prepreg (state-of-the- art)

Improved Aerodynamics:

  • Immense drag reduction compared to previous vehicle (- 50%)

New Monocoque:

  • Enabler for aerodynamic shape with optimized layer structure including aluminum honeycomb
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Weight of monocoque in kg
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Drag coefficient

Suspension System

Topology Optimization:

  • Uprights and Suspension Mounts-high stiffness, minimal weight

Kinematics:

  • MacPherson in the front, double wish bone in the rear

Vertical Dynamics:

  • Elastomer Springs in the front and rear combine spring and damper function in ultralight package

Drivetrain:

  • Fully integrated in Front Uprights, New Planetary Gear Set with optimized teeth geometry

Steering:

  • Ultralight, cable-operated, including autonomous actuator that can be easily detached

Brakes:

  • Dual-circuit, four-disc hydraulic brake system optimized for low weight

Autonomous

Perception:

  • LIDAR and Camera based 3D object and environment detection, Neural Networks for Image-Based track recognition

Planning:

  • Time and distance optimized software for fast and agile local and global planning, Clever Usage of Model Predictive Control Approach in Planning

Control:

  • Lateral and Longitudinal Vehicle Control (steering actuator and electric motors) by self-developed software written in Matlab/Simulink

Software Development:

  • CI/CD for fast prototyping and integration on the vehicle, Simulation in CoppeliaSim for virtual validation of software stack and preparation for challenges on the competition