METHOD AND DEVICE FOR TAKING INTO ACCOUNT FRICTION LOSSES DURING THE SIMULATION OF MASSES ON STATIONARY TEST BENCHES

摘要

To correct the loading moment due to the test bench related frictional losses in the simulation of masses on stationary test benches, a correction circuit (10) is connected to a weather detection device (13) which detects the air pressure (P), humidity (phi) and temperature (T), and calculates the air density (rho) which is transmitted to the correction circuit (10). A loss characteristic function stored in the correction circuit defines the total frictional losses of the test bench, including mechanical friction losses and aerodynamic friction losses which are dependent on the velocity, the weight loading and the air density for a particular test. From the actual existing air density (rho) and/or the actual weight loading of the roller bearings (G), the correction circuit (10) calculates the air frictional losses and the bearing loading losses, which are then combined with the nominal rated rotational moment so that the loading moment is corrected to the extent of the losses.