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This paper investigates the in-cylinder air flow of a compression ignition (CI) engine modified by a guide vane swirl and tumble device (GVSTD) where the number of GVSTD vanes was varied to optimize its dimension to improve the CI engine performance using higher viscous fuel (HVF). Hence, eleven 3D CI engine models were developed; a base model and 10 GVSTD models, via SolidWorks. Computational fluid dynamics (CFD) were performed by utilizing ANSYS-CFX and simulated under motored conditions for two continuous complete cycles. The results are presented of the simulation of in-cylinder pressure, turbulence kinetic energy (TKE) and velocity during the fuel injection period until expansion. The recorded increments from six vanes of GVSTD were about 1.3%, 0.2% and 22% of the above results. Hence, this paper concludes that GVSTD has the potential to improve CI engine performance using HVF.

CFD Investigation of In-Cylinder Air Flow to Optimize Number of Guide Vanes to Improve CI Engine Performance using Higher Viscous Fuel