Investigation reveals air intake runner length and diameter influence volumetric efficiency in SI engines, suggesting optimization may enhance performance.
Key Points
Volumetric efficiency improved by 8.71% with an intake runner length of 528 mm at mid-range RPM, indicating design can optimize performance.
Simulation results show a 5.34% efficiency gain by decreasing the intake diameter to 34.7 mm, emphasizing the impact of air intake design.
Analysis utilized helmholtz resonance and wave propagation methods, providing a comprehensive view of air behavior in engine cycles.
Improvements in volumetric efficiency by 4.19% occur at high RPM with a diameter of 44.4 mm, maintaining a short runner length of 400 mm.