Thus, effect of injection frequency on
the mixing in Throttle Body Injection Mixer (TBIM) for a CNG
motorcycle was studied in this work through Computational
Fluid Dynamics (CFD) simulation. Injection frequencies of 1,
2, 4, 5 and 7 injections per engine cycle had been investigated
using the RNG k-ε turbulent model. CFD results revealed a
significant effect of various injection frequencies on the
hydrodynamics of air and fuel in TBIM. It was found that the
injection frequency of 4 injections per engine cycle was the
most optimum one throughout the case studies.