The atmospheric temperature in various regions of India varies from 0°C to 48°C and due to this vast varying temperature range it is difficult for the engine to perform uniformly. Therefore it is essential to investigate the temperature that is most suited for operating parameters of engines and will give the best performance levels. The aim of this study is to analyze the performance of a compression ignition (CI) engine using Jatropha biodiesel and its blends with diesel as fuel on changing engine temperature to obtain best performance levels. It has been tried to investigate the optimum operating temperature of engine that will deliver the best performance level. The blends of Jatropha with diesel in varying proportions (B10, B20 and B40) are prepared and are investigated in single cylinder, four stroke CI engine computerized test rig. The results obtained on engine performance parameters i.e brake power (bp), brake thermal efficiency (ηth) and volumetric efficiency (ηv) and presented graphically with respect to the engine coolant temperature at different engine loads. The present study inferred that it is preferable to operate the engine at temperature 65°C-75°C to obtain best performance indicators.
CI engine, Jatropha biosiesel, diesel, smoke intensity, operating temperature
