Operating Principles

D/DT Hydraulic Dynamometer Operating
Principles

The hydraulic engine dynamometer is a turbulent-action water brake and DT-1000 1operates on a water control principle. This system applies torque to oppose the rotation of the engine. As the amount of water within the dynamometer is increased, the load (or resistance) on the engine also increases. The resistance developed by the dynamometer increases with the speed of the engine.

Go Power Systems offers two series of hydraulic (water brake) dynamometers: D Series high speed/medium torque (gasoline engines) and the DT Series low speed/high torque (diesel engines).

Characteristic Features:

•Power absorption figures refer to rated torque @base speed
•Selection is based on max torque demanded at minimum operating speed
•Full range of duty curves
•Bi-directional operation (except DT3000)
•Water is both absorption and cooling media
•Low maintenance: only needs occasional re-lubrication
•No consumables
•Dynamometers have built-in torque and speed sensors
•Facility for site calibration using calibrated weights
•Load control is performed on inlet
•Outlet has fixed-sized orifice to maintain each model’s duty curve


CAUTION: The dynamometer may be operated continuously within the duty curve; however, hydraulic machines are regularly used for short-term performance testing at considerably higher power values (torque levels remain with the maximum published level). This results in rapid heating of the water within the machine which may result in localized vaporization and potential loss of control. Go Power Systems accepts no responsibility for any resulting loss due to operation outside the published performance characteristics of the individual dynamometer.