Single-roller chassis dynamometers bring the open terrain into the laboratory. Large rollers, highly dynamic drive units and state-of-the-art control technology enable very realistic and reproducible road travel simulation for passenger cars and heavy vehicles. A wide variety of driving profiles can be examined in vehicle development (R&D) even before the first road trip, or real field measurements can be reproduced on the test rig.

The tests to be carried out in the development process are vehicle and customer specific and may include, for example, the following topics:

• Performance and functional measurements
• Endurance measurements
• Simulation of uphill driving under full load or braking operation during downhill driving
• Simulation of different payloads
• Simulation of changes in driving direction
• Single wheel measurements
• Investigations into the vertical dynamics of vehicles and the longitudinal compliance of wheel suspensions
• Simulation of different road surfaces
• Fuel or electric power consumption measurements
• Dynamic investigations of driver assistance systems

RENK chassis dynos can also be installed in the following test chambers if prepared accordingly:

• Climatic chambers
• EMC measuring chambers
• NVH test chambers
• Wind tunnels
• Altitude chambers

The rollers can be single-driven, in pairs or per axle, depending on the application. The number of rollers is predetermined by the vehicles to be tested. The distance between the rollers is adjustable to the wheelbase of each individual vehicle.

Special roadshells attached to the rollers can be used to simulate different road surfaces. Different bump bars on the roller surface can simulate obstacles or uneven road surfaces.

The RENK RDDS test stand automation system can manage all common test programs as well as self-assembled test runs.