Our NVH chassis dynamometers are available as standard in single roller, 2WD, 4WD and 4×4, and independent configurations.
The rollers are available from 1.8m to 2.5m in diameter, running in hydrodynamic or roller element bearings. The roller assemblies are acoustically attenuated to minimise the effect of noise generation and amplification. They can be either coated to represent a road surface or fitted with interchangeable road surface simulation shells.
Trunnion mounted motors compensate for system losses and simulate road load forces, vehicle inertia and gradients. These motors are installed in isolated areas and connected to the rolls by torsionally tuned couplings and drive shafts. Acoustic shaft seals, roll covers, and breakthrough seals around the rollers ensure effective noise containment. Wheelbase adjustment is available to accommodate different vehicles. Roller centres can be set automatically as part of the road load model information, or set to the user’s specific dimensions. The dynamometer baseframe is mounted on a moving carriage.
The test bench is equipped with the PAtools real-time system and a distributed I/O architecture.
|Speed range||280 km/h|
|Absorption power per axle||278 kW|
|(100 - 280 km/h)|
|Force per axle||10000 N|
|(0 - 100 km/h)|
|Inertia simulation range||600 - 5400 kg|
|Wheelbase adjustment||2260 mm - 4700 mm|
|Roller diameter||72" (1828 mm)|
|Width||24" (610 mm)|
|Spacing||40" (1016 mm)|
|Acoustic performance at 100 km/h||45 dBA (typical)|