Investigation on CI Engine Performance Emissions and its Limitation Using Biodiesels from Jatropha Mahua and Neem Oils in Indian Conditions

Abstract

newline The ever rising consumption of fossil fuel and petroleum products has been a subject of great worry for India. The consumption of diesel fuel is six times higher than that of gasoline in India and even a few percentage of substitution for diesel fuel will save a considerable amount of foreign exchange. Biodiesel is considered to be a promising alternative to fossil fuels worldwide. This can greatly improve energy security and prevent the shortage of conventional fuel. All blends were used for investigating performance and emission characteristics. The esters and their blends were prepared in a laboratory. All esters were prepared through single phase transesterification technology. The properties of various raw oils were compared with diesel. newlineA gas analyzer was used to measure various emissions. The smoke emission was measured by an AVL continuous flow smoke meter. Thermocouples were fixed to measure the inlet and exhaust gas temperature. Various parameters were determined at each operating condition. The experimental results showed that brake thermal efficiency of the blends is considered higher when compared to diesel fuel. CO emission indicates that by increasing the percentage of triple biodiesel in the blends there is an appreciable reduction in emission at high loads over the baseline data of diesel. NOx emission was found to be higher for all the blends at full load condition, while smoke opacity was lower for all loads. Life cycle analysis was also carried to estimate the suitability of various vegetable oils used in present study. It was found that the energy ratios for all biodiesels were above unity for all soil conditions. newline