METHOD FOR TESTING A GEARBOX, IN PARTICULAR FOR DIAGNOSING OR PREVENTING FAILURES

摘要

The method involves equipping an electric traction machine (12) in series on a main shaft (8) with a thermal engine (1), and arranging the machine at an input end of an automatically-controlled gearbox (9) including a set of mechanical parts, where the parts of the gearbox are to be tested in rotation. The gearbox is driven in rotation by the machine in a test phase at a neutral position. A drag torque value of the gearbox is deducted from a deceleration value of the shaft, where the torque value is compared to acceptance threshold indicating potential malfunction of the gearbox.