AVL Omega

Hydraulic Dynamometer

AVL Omega

The Omega Hydraulic Engine Dynamometer – a product of AVL ZÖLLNER MARINE - is a cradled-mounted load unit for steady state testing of combustion engines in the power range from 550kW to 12,000kW.

AVL Approach

The AVL Omega Dyno works on the Föttinger principle. It converts the absorbed energy into heat which is carried off by cooling water flowing thru the dyno. The dyno works in one operating direction. Load is varied by controlling the water outlet valve position and the optimal heat dissipation is ensured by controlling the water inlet valve position. 

Benefits at a Glance

  • Very high power mass ratio
  • Precise speed and torque measurement
  • Very stable in operation
  • Standard interface to automation system

Technical Data



Product category Passive dynamometer
Design Cradle-mounted
Torque measurement Load cell
Power 550 – 12,000kW
Torque 2,500 – 171,000Nm
Speed 1,500 – 7,000rpm
Engine testing  
Steady-state testing
Dynamic vehicle & driver simulation -
Drivetrain / dynamic + mass zero simulation
Driveability simulation -
Passenger car emissions -
Heavy duty emissions
Friction tests -
Component testing -
Formula 1 / Motorsports -
Turbine Test
Large Engine R&D
Large Engine EoL
Large Engine Emission
Powertrain / Driveline testing  
Endurance testing
NVH Tests -
Dynamic motoring with
combustion simulation
Dynamic load with
tire simulation
Formula 1 / Motorsports -



The hydraulic dynos are controlled by fast-acting butterfly valves positioned in the water outlet and – depending on application – also in the water inlet pipe too. These valves regulate the quantity of water and pressure within the AVL Omega hydraulic dyno.
When AVL Omega hydraulic dynamometers are equipped with both controlled inlet and outlet valves, they are suitable not only for steady-state but also for transient testing.

AVL Omega Hydraulic Dynamometers are suitable for:

  • Steady state and transient applications
  • Exhaust emission tests
  • Quality control and endurance tests
  • Hot test running-in of newly manufactured engines