Patent ID: 6457352
Filing Date: 2002-10-01
Classification: G01M

Abstract:
Dynamometer for motor vehicles, particularly vehicles having a plurality of driven axes, comprising:a plurality of test sets (I and II) each comprising of two drums (3), a support frame (6) and an electric driving/breaking motor (9) for directly driving or slowing down the drums, borne in the support frame (6) between the two drums (3) in a pendulum fashion and disposed in at least one pit (III), at least one of said test sets (I or II) being movable in a longitudinal direction and driving motors of the two test sets (I and II) being electrically synchronised, with at least one running drum for each wheel of at least one axes of a vehicle to be examined, a stator housing of said electric motor is supported on said support frame by way of a force meter and a control unit for the electric driving motors connected to a running simulator for setting specific vehicle data and for simulating selected running conditions, characterised in that the stator housing (9a) of the respective electric driving motor (9) is borne in the support frame by way of a bearing arrangement (15-18; 72-78; 48) with minimal friction even during activation or start-up operation and, further characterised in that a sine/cosine sensor (31, 32) to accurately detect an angular position or angular speed of a motor shaft (33) is allocated to each driving/breaking motor (9).