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Emissions tests require repeatable extremely accurate dynamometers to allow the vehicle to be tested under accurately simulated road conditions, whilst in the emission laboratory. The Chassis Dynamometer needs to exceed the demanding performance criteria required by the US EPA directive, FTP 75 / SFTP (US06) EUDC standards. These criteria include:
  • Accurate Road Load simulation to ensure the vehicle is tested under operational conditions
  • Fast, critically damped Inertia simulation response to provide realistic loading of the test vehicle powertrain
  • Accurate synchronisation of multi roller systems to provide "through the road" type conditions
  • Effective parasitic loss compensation


Our Emissions Chassis Dynamometer provides an extremely accurate, repeatable and responsive electrical inertia simulation vehicle test system. The chassis dynamometer utilises an AC motor centrally mounted between the rolls that provides a compact, low maintenance design. All components are mounted on a single substantial steel underframe providing rigidity, low vibration and ease of installation.
The chassis dynamometer control system includes several automated routines to test and validate all the main performance criteria.
Emission chassis dynamometer solutions are also available for truck and motorcycle applications
Main Features of our Emissions Chassis dynamometers:
  • 48" roll with centre-mounted AC motor
  • Compliant with EPA, EURO III, IV and V legislative emissions test requirements
  • High accuracy and repeatability with fast response inertia simulation
  • Clean power IGBT AC drive technology
  • Thermally stabilized load measurement system
  • Twin encoders for increased accuracy
  • Real time control processor and separate Graphical User interface PC using distributed I/O hardware platform
  • Automated dynamometer performance testing routines
  • Above floor loadcell calibration
  • 4x2 and 4x4 configurations
  • 4x4 independent systems for Hybrid Vehicle testing
  • Robust design for long and trouble-free operational life
  • Low maintenance and lifecycle costs

  • A Robot driver is also available to complement this Chassis dynamometer to assist with repeatable results.


  • Vehicle exhaust emissions testing
  • Fuel economy testing
  • Climatic and environmental testing
  • Vehicle road load simulation for customer test requirements
  • Performance Testing


  • vDriver
  • Robot Driver
  • 2WD, 4WD or 4x4 Independent configurations
  • 2WD upgradeable to 4WD
  • High speed version up to 300 km/h
  • Increased power/force options (240kW/10,000N)
  • Climatic (typically -40°C to +60°C) design with climatically exposed or insulated pit options
  • Integrated or stand-alone robot driver
  • Drivers-aid laptop/PC
  • Automatic 'vehicle centring and lift' systems
  • Automated wheel guards/roll covers
  • AK or ASAM communication links to test-cell host or emission gas analysis equipment
  • Test facility host computer system
  • Data acquisition with powerful graphical presentation and analysis package
  • Vehicle cooling fan
  • Drivers handset
  • Various standards including UL, BV, and CNOMO