Design and Fabrication of Test Rig for Acoustic Analysis of Crank Balancer

Abstract

This project aims towards the acoustic analysis of the crank balancer of a tractor engine – Massey Ferguson MF 300. Our job is to design and fabricate the Mechanical Test Rig for this analysis. Further analysis using acoustic array is not in the scope of this project. To avoid extra vibrations or unwanted sound emission by the Test Rig, we have acquired close tolerances in the fabrication process. In our design, we have replicated the original environment of the crank balancer, as being in the engine, to obtain accurate test results and converge to the source of the noise coming out of it. We have provided a direct drive system to the crank balancer via the motor-shaft assembly, equipped with a variable frequency drive controller to regulate the speed of the motor. The sump tank is left open to directly record the sound signals originating from the crank balancer avoiding any interference.