Heavy Duty Axle Testing – HEAT

Efficient test sequences and evaluations, networking of test results with the tool chain in the vehicle development process (simulation, xIL) – and high flexibility in terms of different drive concepts with the associated media supply.

The HEAT product family from RENK provides a range of drive systems that allow a vast range of test rig configurations to be implemented quickly and cost-effectively.

Basic system:

  • RDDS automation system
  • Different power units as per customer requirements, consisting of the AC motor (motor/generator), matching gearbox, speed/torque measurement and mounting frame
  • Control cabinet
  • Power and signal cabling


  • Lift and swivel mounting frame for power units
  • Mounting frame for test pieces
  • Couplings, adapters
  • Test-piece conditioning
  • Special measurement technology
  • Test-piece measuring box
  • Feed- and regenerative transformer
  • Sound insulation (power units/overall system)
  • Floor plate, vibration isolated foundation
  • Parallel test operation of two test setups
  • Integration of MATLAB/Simulink-models


Heavy Duty Axle Testing – HEAT

Standardized power units with integrated speed and torque measurement

Real-time capable test bench electronics for operating all test bench configurations

Highest possible modularity

Wear-free AC motor drive concept in 4-quadrant operation

Maximum security due to continuous condition monitoring

Networking of all test results with external tools of the development process

Possibility of adapting the power units and test object holders to real installation positions

Extensive expansion options

Technical data

400 – 850 kW
Maximum torque:
3,000 – 100,000 Nm
Maximum speed:
1,000 – 4,500 min-1

The maximum values listed here show the range of current systems; however, due to constant further development they do not necessarily specify the limits of what is possible today.


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