Change visitor typeROTOTEST VPA-RX Chassis Dynamometer - The system
The ROTOTEST® VPA-RX™ dynamometer is far superior to a traditional chassis dynamometer ("rolling road") both in precision, test possibilities and safety, as there is no slip between tyres and dynamometer (rollers) thanks to direct hub-connection, a near zero system inertia and an extremely accurate front-end mounted calibrateable torque transducer. Another great advantage of the Rototest chassis dynamometer is its portability. ROTOTEST VPA-RX hydraulic chassis dynamometer unit The complete system can be easily transported to a new test site and set-up in minutes. The only requirement being a flat surface.

The main parts of the turnkey ROTOTEST® VPA-RX™ system consists of hydraulic dynamometers, Hurricane Cooling Units™ and a System Central Unit. The dynamometers support the vehicle when in operation and no additional support is required. This results in stable and low vibration test conditions.

The Hurricane Cooling Unit™ is an integrated part of the ROTOTEST® VPA-RX™ system. It is a patent-pending innovation that uses energy-recycling to create headwind to the test vehicle with wind speeds reaching hurricane levels. The Hurricane Cooling Units™ produce heavy airflow in accordance with the braking power. They are intended for cooling the dynamometers, but have a performance level that ensures engine and transmission cooling in most cases.

The System Central Unit (SCU) is based on an industrial 19'' rack cabinet and contains a Master Control Unit, (MCU) with an embedded controller, measurement and supervision; an UPS for power supply with backup batteries; and a User Interface & Measurement (UIM) industrial PC.

With the powerful network capabilities it is now possible to follow the test from a remote location. The data integration system is built on the industry standard National Instrument's LabVIEW, giving endless possibilities to expand or integrate other equipment.

A ROTOTEST® VPA-RX™ 2WD chassis dynamometer consists of two VPA units (dynamometers), one or two Hurricane Cooling Units™ and one System Central Unit. A 4WD system consists of two additional power absobtion units and one or two additional cooling units.

Turn-key system includes
  • Complete oil fill
  • Software licenses
  • Monitor(s)
  • Keyboard & mouse
  • Hydraulic hoses
  • Electric cables
  • Torque rod for calibration
  • Wheel adapters
  • Nuts or bolts
  • Users & service manual
A ROTOTEST VPA-RX 2WD chassis dynamometer consists of two VPA units (dynamometers), one or two Hurricane Cooling Units™ and one System Central Unit. A 4WD system consists of two additional power absobtion units and two additional cooling units.