DESIGN AND ANALYSIS OF INTAKE MANIFOLD TO REDUCE THE BACK PRESSURE

M Yashwanth; M Phani Srujan; Ch Indira Priyadarsini

Volume : VI, Issue : X, October - 2016

DESIGN AND ANALYSIS OF INTAKE MANIFOLD TO REDUCE THE BACK PRESSURE

M Yashwanth, M Phani Srujan, Ch Indira Priyadarsini

Abstract :

The objective of present paper is to predict and analyze the flow through intake manifold of four cylinder spark ignition engine. One of the important factors is air flow inside the intake manifold; the ideal intake manifold distributes flow evenly to the piston valves. Even distribution is important to optimize the efficiency of the engine. Hence the flow phenomenon inside the intake manifold should be fully optimized to produce more engine power with better combustion and further reduces the emission. Firstly structural analysis has been conducted to set the thickness and material suitability of intake manifold against bursting pressure. Three–dimensional inlet manifold was modeled in ANSYS workbench and numerically analyzed by using the commercially available FLUENT software to study the pressure, velocity and flow characteristics inside the runner. The steady state analysis has been carried out for three different cases: All runners open, 1st & 3rd runners’ open and 2 nd & 4th runners open. The predicted results of total pressure loss and total outlet mass flow were discussed. Inlet pipe and plenum connection creates a back step geometry which causes more total pressure loss due to flow recirculation in conventional model. Tapering the geometry is causing more inlet mass flow due to reduction in total pressure loss in the plenum chamber.