Computational studies of an intake manifold for restricted engine application

• Main Authors: Prasetyo, Bagus Dwi, Ubaidillah, Maharani, Elliza Tri, Setyohandoko, Gabriel, Idris, Muhammad Idzdihar
• Format: Conference Proceeding
• Language: English
• Subjects: Aerodynamics; Air flow; Air intakes; Automotive engineering; Automotive engines; CAD; Colleges & universities; Competition; Computational fluid dynamics; Computer aided design; Computer simulation; Engine design; Engine inlets; Flow velocity; Intake manifolds; Intake systems; Mathematical models; Maximum power; Power efficiency; Throttles; Volumetric efficiency
• ISSN: 0094-243X; 1551-7616
• DOI: 10.1063/1.5024094

The Formula Society of Automotive Engineer (FSAE) student competition is an international contest for a vehicle that entirely designed and built by students from various universities. The engine design in the Formula SAE competition has to comply a tight regulation. Concerning the engine intake line, an air restrictor of circular cross-section less than 20 mm must be fitted between the throttle valve and the engine inlet. The throat is aimed to limit the engine air flow rate as it strongly influences the volumetric efficiency and then the maximum power. This article focuses on the design of the engine intake system of the Bengawan FSAE team vehicle to optimize the engine power output and its stability. The performance of engine intake system is studied through computational fluid dynamics (CFD). The objective of CFD is to know the pressure, velocity, and airflow of the air intake manifold for the best performance of the engine. The three-dimensional drawing of the intake manifold was made, and CFD simulation was conducted using ANSYS FLUENT. Two models were studied. The result shows that the different design produces a different value of the velocity of airflow and the kind of flow type.