Reduction of Diesel Engine Emissions and Its Analysis by Using Exhaust Gas Recirculation at Various Cooling Rates

The cooling rate of an IC engine stands one of important parameters that govern the performance and emissions. In our present experimental investigation emissions of a Kirloskar AV-1 single cylinder, water cooled, diesel engine was observed at various cooling rates and compared with that of operated under Exhaust Gas recirculation(EGR). Experiment was conducted in various cycles by varying loads, cooling rates and recirculation of exhaust gas. Exhaust Gas recirculation was done by provision in the test rig that is provided with a valve for managing flow and a U-tube manometer for measurement of the EGR flow. The EGR proportion of 18% was maintained as this proportion of EGR substitution was the maximum that did not detoriate the performance of engine further substitution had led to slow down of engine. The emissions NOx in PPM, CO in %vol, CO2 %vol, HC in PPM & un reacted O2 in %vol was measured using MN-05 multi gas analyzer.