Experimental investigation of four stroke single cylinder SI engine by modified intake manifold by using computational fluid dynamics

Abstract

The research reveals that the optimisation of an intake manifold plays an important role in manifold design to maximise the quantity of air received into the cylinder for competent combustion. Traditional manufacturing of intake manifolds and the trial and error method to select an optimised manifold is time-consuming and cost-effective. This work focuses on the design of an intake manifold with different configuration such as normal, convergent and venture types and the study of the air flow through each designed manifolds has been performed using CFD. On comparison of the analysis results, an optimised intake manifold which allows maximum airflow inside the cylinder has been selected for efficient combustion. Experimental Studies on emission level reduction shows that the flow harnessing in the intake manifold of the IC engine can yield improvement in engine torque up to 10% along with a nominal decrease in emission level.