LAUSR

Abstract Propanol diesel (P100 + D) dual fuel HCCI (DF-HCCI) engine was used to overcome HCCI engine challenges. In the present study, propanol was supplied along with intake air through the carburetor and diesel/butanol blend was injected into the engine cylinder through fuel injector. MFR of propanol was varied using different fuel jets (jet 40, jet 60, jet 70, jet 80, and jet 90) in carburetor. Additionally, the influence of different butanol blends (B10/B20/B30) on the engine performance was examined as a substitute for diesel fuel. Results revealed that increase in MFR of propanol, increases ignition delay (ID) leading to reduce combustion duration (CD) and pressure rise rate (PRR), which assist to reduce NOX emissions and smoke opacity compared to baseline diesel engine. From the optimization, it was concluded that jet 60 and jet 70 were appropriate for 20% and 40% load respectively, although jet 90 was appropriate for 60%, 80%, and 100% load conditions. On average 67.64% diesel can be replaced by propanol in optimized P100 + D DF-HCCI engine. Further, in place of diesel fuel, butanol blends (B10/B20/B30) are supplied through injector to ignite propanol DF-HCCI engine. The results showed that NOX and CO emissions are reduced compared to P100 + D DF-HCCI engine.