Chassis Dynamometers

Acoustic chamber with open field conditions, class 1

General

Real on-road driving conditions can be reproduced very precisely on chassis roller dynamometers with dynamic mass simulation.

The installed 1 axle single-roller test benches are suitable for the following tasks:

• Vibration and noise measurements
• Fuel consumption and emission measurements
• Functional and durability analyses

Integrated roller test bench with a power of 300 kW

Technical Description

The acoustic chamber with an integrated vehicle roller test bench is designed as semi low-reflexion chamber and is suited to open field conditions. Its acoustic lining enables noise absorption down to 100 Hz allowing sound measurements according to DIN 45635 accuracy class 1.

The pavement of the acoustic test bench is similar to the measurement track according to DIN 10844.

Due to the installed power output of 300 kW passenger cars and light-duty commercial vehicles can be driven with a continuous force effort of 8,000 N and temporarily up to 12,000 N. Vehicle weights from 500 to 3,500 kg can be simulated. The max. speed is 250 km/h.

The design of the roller test bench in the acoustic chamber allows the simulation of a one-sided exterior drive-by noise measurement by using one row of microphones. The gross chamber dimensions are 24 m x 14 m x 6.5 m.

Technical Data