CAM Profile Optimisation of Single Cylinder Diesel Engine to Reduce Noise and Vibration

Abstract

The optimization of the cam profile plays an important role to reduce noise and vibration in an internal combustion engine. This study analyzes a method for the design and experimentation of different cam profiles. The proposed method commences with the use of higher order polynomials for the cam profile. Subsequently, an optimum cam profile is redesigned and used in the engine. The improvement of the cam profile is based on optimized factors such as velocity and acceleration in the cam profile. The vibration and noise due to impact between cam and tappet can be controlled by adjusting the ramp height and the velocity in the ramp area. Also, there is a significant improvement in Sound quality. The experimental result shows a reduction in overall noise by 1.86dB (A) in case of optimized cycloidal cam profile of single cylinder engine.