TESTING APPARATUS AND METHOD FOR SIMULATING GEAR STUCK PHENOMENON OBSERVED IN A VEHICLE TRANSMISSION

摘要

A testing apparatus and method for simulating gear stuck phenomenon observed in a vehicle transmission are disclosed. The testing apparatus comprises a base frame fixed to ground. A spin stand is mounted on the frame for supporting a transmission under test as per vehicle installation roll and pitch angle. A vertical member is mounted on the frame and welded with a coupling flange to restrict rotation of a transmission output shaft. A bearing assembly is press fitted in the spin stand for holding a transmission input shaft. The bearing assembly is connected to a lever with hook for hanging dead weight in order to generate breaking torque at the input shaft. Hence, it facilitates faster optimization of selector or shifter shaft detent spring stiffness and dimensional tolerance of the transmission to avoid gear stuck.