Abstract
An experimental investigation was conducted to analyse the performance and exhaust emissions of Kirloskar AV-I Compression ignited air cooled engine fuelled with diesel and cotton seed oil blends (80% of diesel and 20% of cotton seed biodiesel).Experiments were conducted at various concentration of urea solutions ranging from 30 to 35% at a constant flow rate of 0.75 litres per hour. The results indicated that urea injection with titanium dioxide as selective catalyst in the exhaust pipe caused a 47.9% of NOx reduction for diesel at full load condition and at a constant flow rate of 0.75lit/hr with an urea concentration of 35%.Also the results showed that urea injection with titanium dioxide as selective catalyst in the exhaust pipe caused a 68.5% NOx reduction for biodiesel which was achieved with a constant flow rate of 0.75lit/h with an urea concentration of 32.5%.Thus Biodiesel (C20) fuelled CI Engine with SCR is a very effective and suitable replacement for petroleum based diesel fuelled CI Engine with SCR. ANOVA analysis was done and resulted that the null hypothesis is rejected. A high p-value (0.104) had suggested that beta plays a less significant role in the model and a low p-value (0.012) suggests that beta plays a significant role in the model. Overall ANOVA analysis disclosed that percentage of urea solution has a major impact on NOX emissions than HC and CO emissions.
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