Design and simulation of mixer insulators to improve turbulence in intake manifold

Abstract

This article presents an analysis of mixer insulators on the gasoline engine to find the most optimal design. A standard insulator has been redesigned by adding a scrambler of air flow placed in the intake manifold. Simulations are carried out on 10 variations, which include standard insulators, 5, 7, and 9 angled insulators which have slopes of 30, 45 and 60, and have a thickness of 5 mm. Each model was analysed using Computing Fluid Dynamic (CFD), with parameters of air velocity 10 m/sec and air pressure 101325 Pa. Simulation results show that mixer insulators with a thickness of 5 mm, 5 blades with a 45 slope angle produce the best turbulence intensity. Meanwhile, another design with a thickness of 5 mm, 9 blades with an angle of 60 slope angle produce the best effect to increase air velocity.