1D-3D Simulation of Swirl Flow in Toyota K3-VE SI Engine using Ricardo WAVE and ANSYS Fluent

• Main Author: Akmal Fakhri, Fadhil
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/42823
• Institution: Institut Teknologi Bandung

To reduce global fuel consumption, engineers have been trying to design the most efficient engine. One way to increase the efficiency of a combustion engine is by inducing swirl flow in its cylinder that causes an increase in turbulence resulting in a shorter combustion duration and more power. Swirl flow in the engine cylinder can be formed by using guide vanes swirl and tumble device (GVSTD) in the intake port. Swirl flow can also increase losses, so it is necessary to analyze the impact of swirl flow on engine performance. For this reason, simulations are conducted using ANSYS Fluent for CFD simulation of intake ports and Ricardo WAVE for 1D simulation of engine operation. Toyota Avanza that uses Toyota K3- VE engine has the highest number of users in Indonesia, so it was chosen as the object of research. The analysis was carried out by conducted 1D simulation on the Toyota K3-VE engine model in 1D using Ricardo WAVE and CFD simulations at the intake port with GVSTD. CFD simulations were conducted to determine the initial swirl ratio values generated using ANSYS Fluent. The initial swirl ratio of the CFD simulation results were used as the initial condition of the 1D simulation, valued at 0, 4, and 6. Then, 1D simulation results were used to analyze the effect of swirl flow on the engine. 1D simulation results show that the swirl flow increases the power and efficiency of the engine when operated over 4000 rpm. Below 4000 rpm, swirl flow in the engine cylinder lowers the power and efficiency of the engine. Based on the analysis, the optimum initial swirl ratio value on the Toyota K3-VE engine is 4 at operations above 4000 rpm. Hopefully, this final project could be a reference for the simulating and designing a more efficient engine in the future.