Search Results

Waste or used transformer oil (UTO) possesses a considerable heating value and physical properties similar to diesel fuel. But, the viscosity and density are marginally higher than diesel fuel. The present investigation is aimed to study the combustion, performance and emission characteristics of a single cylinder, four stroke, air cooled DI engine fueled with UTO at different nozzle opening pressures varying from 200bar to 250bar at a regular interval of 10bar. The results of the investigation showed that operating the engine fuled with UTO at 230bar nozzle opening pressure gave a higher brake thermal efficiency, higher nitric oxide (NO) and lower smoke emissions than that of UTO at 200bar which is a standard nozzle opening pressure set by the manufacturer. The maximum heat release and the maximum cylinder pressure at 230bar are found to be higher than that of UTO at 200bar. In comparison with diesel operation, UTO at 230bar operation gave higher NO and lower smoke.

Vegetable oils are very good alternative fuels and have great potential for use in internal combustion engines because of their abundant availability, renewable nature and lower emissions. Many vegetable oils have been used in compression ignition engines with fuel modification or engine modification. Polanga oil, non edible oil by nature is available in a few states of India. An experimental investigation was made to evaluate the combustion, performance, and emission characteristics of a diesel engine using blends of polanga oil and diesel. Polanga oil of 10%, 30% and 50% on a volume basis was blended with 90%, 70% and 50% respectively, diesel fuel. The experimental results are compared with those of pure diesel fuel operation, and presented in this paper.