<b>Design and Analysis of Air Intake System for Single Cylinder Engine</b> Our understanding of Air flow behavior around an object makes us better designer in order to achieve better performances from our automobiles. In this paper we present an analysis of air flow via air intake system required to meet FSAE norms in SUPRA Vehicles.The aim of this project is to create a flow restriction device to be fitted in the SAE Society of Automotive Engineers car being built by Team Zenith, GB Pant Engineering College, New Delhi. The car is an open wheeled race vehicle, designed to go from 0 60 mph in under 4 seconds and have a top speed of about 80 90 mph.An Air intake system in a FSAE SUPRA Vehicle consists of various components as followed 1 Air Filter2 Air Restrictor3 Plenum4 Intake Manifold.Air enters at the filter and passes through restrictor, which is used to increase velocity and drop pressure and then enters into plenum which is used to provide better distribution of air flow and to prevent further drop in pressure.Design of Air restrictor is critical as per norms of FSAE due to fixed minimum neck diameter of 20 mm as demonstrated below. Fig Basic structure of restrictor, plenum and runnerThis is done primarily to limit the power capability from the engine. Since the maximum mass flow rate is now a fixed parameter because of the restrictor, the aim is to allow the engine to achieve the maximum mass flow with minimal pull from the engine. In short, the pressure difference between atmosphere and the pressure created in the cylinder should be minimal, so that maximum airflow into the engine at all times.Our study revolves around finding such combination of angles of inclination and rise of the restrictor which should provide the vehicle maximum performance within limits directed by FSAE.We have simulated various design of Air restrictors based on different pair of angles for the Air restrictor that could make a significant impact in the performance of the engine. The software we used for the same are ANSYS, SolidWorks. Design and Analysis of Air Intake System 357-379 Issue-2 Volume-2 Sushil Pant | Pankaj Kumar | Ranjan Kishor