EFFECT OF EXHAUST GAS RECIRCULATION ON EMISSION CHARACTERISTICS OF COMPRESSION IGNITION ENGINE WITH COTTONSEED BIODIESEL

The present investigation was to study the compression ignition (CI) engines with cottonseed biodiesel along with different percentage of exhaust gas recirculation (EGR) for analyzing the emission characteristics. In this experiment, the EGR percentage was varied from 0% to 30% in a four-stroke, air-cooled, single cylinder, diesel engine capable of developing 4.4 kW-rated power to study its emission characteristics, which were clearly compared with diesel fuel. From the experiment, it is observed that the increase in EGR percentage in fresh mixture which intern resulted in reduction in oxides of nitrogen emissions. The maximum percentage reduction in oxides of nitrogen, when compared to neat diesel operation, is 65.86%. Even though there is an increase in carbon monoxide and hydrocarbon emission for various EGR rate