Research Projects

Reciprocating internal combustion engines will remain relevant in the transport sector for the next 10-20 years, despite the emergence of battery electric and fuel cell electric vehicles. Consistent improvement in engine efficiency, fuel economy, and emission levels should be a priority for the next decade. Gasoline engine vehicles will have considerable shares in India's transportation sector. Gasoline direct injection (GDI) systems involve introducing fuel spray inside the engine at higher pressures, leading to better charge preparation and air-fuel mixing, improved combustion performance, and lower emissions. However, during engine idling, fuel evaporation levels decrease, leading to spray-wall interactions, which adversely affect fuel economy and make meeting particulate number (PN) regulations challenging. studying spray-wall impingement for GDI engines is critical for making engine operation more environmentally friendly. Comprehensive parametric studies, both numerical and experimental, are limited, and the effect of internal nozzle flow on spray-wall interaction in GDI systems is rarely reported. Experimental findings will be critical for numerical modeling and further parametric studies. Fuels tested will be gasoline, ethanol, and gasoline-ethanol blends. In-house codes will be developed for post-processing results from experiments and CFD.