SIMULASI NUMERIK PENGARUH MODEL SCREW PADA SALURAN INTAKE MANIFOLD SEPEDA MOTOR TERHADAP DISTRIBUSI KECEPATAN DAN TEKANAN ALIRAN FLUIDA

Abstract

The article discusses the importance of energy's role in the progress of a country, particularly in the context of reducing fossil energy for fuel needs. In the modern technological era, significant efforts are required to enhance the environmentally friendly performance of motor vehicles. One of the latest innovations in automotive technology is the utilization of a turbo cyclone in engines, enabling air to pass through turbulent flow to improve the mixing of fuel and air. The method employed is numerical simulation. The study focuses on the influence of various pitch screw models on the intake manifold channel of a motorcycle, examining the distribution of velocity and fluid pressure by varying the screw pitch at 0 mm, pitch screw 25 mm, pitch screw 33.3 mm, and pitch screw 50 mm. The research results include visualizations of Velocity Contour and pressure contour. The findings indicate that a 25 mm pitch screw variation produces the highest velocity outlet at 9.59 m/s with a Reynolds number of 1.513 x 10⁴, while the lowest pressure outlet of -0.034 Pa is also obtained from the same variation. Thus, it can be concluded that varying the pitch screw model in the motorcycle's intake manifold can increase the intensity of fluid turbulence, providing significant benefits in channel and combustion chamber design.

Keywords: : Motorcycle, Intake manifold, Pitch screw, Velocity Contour, Pressure contour, Simulation.