AVL ROADSIM 25" INLINE ATV™ Chassis Dynamometer - Testing Solutions for Passenger Cars
AVL ROADSIM 25" INLINE ATV™ Chassis Dynamometer
AVL Approach
The cradled AC motor is arranged next to a fixed roller. It is designed for ideal road load simulation of vehicles. The mass simulation is realized electrically by the AC motor with a mechanical base inertia of the roller.
Benefits at a Glance
- Reduced tire losses due to suitable roller diameter
- Simple and fast on-site assembly
- Highly-precise and proven road load simulation
- Aluminum covering for robust testing under several environmental conditions
Technical Data
The following specification shows typical values and is subject to change. Alternative technical configurations are available upon request.
| Performance |
|
| Nominal tractive force in motor mode |
1,000N @ v≤198km/h |
| Nominal power in motor mode |
55kW @ v≥198km/h |
| Max. speed |
300km/h |
| Dimensions |
|
| Roller diameter |
648mm |
| Distance between outer roller edges |
1,500mm |
| Distance between inner roller edges |
400mm |
| Inertia simulation range |
|
| Inertia simulation range |
80kg … 2,000kg |
| Roller set axle load |
|
| Max. axle load |
1,000kg |
| Measurement accuracy data |
|
| Tolerance of tractive force measurement |
±0.1% of full scale |
| Tolerance of speed measurement |
±0.02km/h |
| Control accuracy data |
|
| Tolerance of tractive force control |
±0.2% of full scale |
| Tolerance of speed control |
±0.05% of full scale |
| Road load simulation |
|
| Tolerance of inertia and road load simulation |
±1% of calculated value (but not better than force control) |
| Test specimen |
|
| Tyre diameter range of front wheel clamping device |
370mm … 720mm |
| Tyre width range of front wheel clamping device |
50mm … 230mm |
Measuring Principle
Tractive force
The tractive force is measured by a strain gauge sensor supporting the cradle mounted motor.
Speed
The speed is measured by an incremental encoder with two 90° shifted tracks with detection of the direction of rotation.