Bøger af Sunil Kumar Mahla

The present study demonstrates that a diesel engine can be operated with blends of DMC in diesel fuel with minimal engine changes. In this study pure diesel fuel was used as a base fuel for DMC¿diesel blends. The blends containing 5, 10, 15, and 20 per cent DMC fuel by volume is used on a test rig developed for the experimentation. All tests were steady state and were set at constant engine speed 1500 RPM. With the addition of oxygen in the fuel, it has been observed that small CO reductions occur over the engine operation and there is drastic reduction in smoke emission, other exhaust gases were also reduced up to some extent. Moreover there is also increase in the brake horse power and brake thermal efficiency of the engine by small percent. So it can be concluded that the addition of DMC by 15% in diesel not only helps to reduce the exhaust emission but also increases the performance of the diesel engine. The conclusions from the research completed thus far lead to recommendations for use of fuel as a blend in order to improve the engine operation.

In recent years, two problems roused people¿s concern. One is energy crisis caused by the depleting of petroleum fuel. The other is environmental issues such as greenhouse effect, global warming, etc. Therefore, renewable sources utilization technology and bio-energy production technology developed fast for solving such two problems. From a waste management standpoint, producing biodiesel from used frying oil is environmentally beneficial, since it provides a cleaner way for disposing these products; meanwhile, it can yield valuable cuts in Carbon dioxide as well as significant tail-pipe pollution gains. Butanol is a potential alternative to ethanol and offers many benefits including a much higher heating value and lower latent heat of vaporization. It also has a higher cetane number than ethanol and improved miscibility in diesel fuel.This work includes production of biodiesel from waste cooking oil (using trans-esterification reaction at 6:1 molar ratio), its properties and engine testing and comparison to biodiesel and butanol blends and neat diesel.Experimental work was conducted to evaluate the effect of using n-butanol and biodiesel in conventional DI diesel engine.

Biodiesel is receiving increased attention as an alternative, non-toxic, biodegradable and renewable diesel fuel. Biodiesel comes in use due to depletion of petroleum fuels and the environment benefits. Biogas can also be used with the biodiesel in I.C engine because of its better mixing ability and clean burning nature with very minor modifications in the engine. The usage of oxygenated fuels can reduce the particulate matter (PM) emissions from the engine without large modification of the engine. The present study has conducted to evaluate the properties of rice bran biodiesel and effect on the performance and emissions characteristics of C.I. engine using rice bran oil methyl ester with oxygenated fuel of Diethyl Ether blended with diesel as a pilot fuel and biogas as a gaseous fuel under dual fuel mode. This study is conducted in two phases. In the first phase, the blends of D80-B10-DEE10 and D60-B20-DEE20 with the use of biogas at a fixed flow rate of 0.9 kg/hr are performed at different load conditions and compared with diesel. In the second phase, the blends of D80-B10-DEE10 and D60-B20-DEE20 are performed at different load conditions.

Diesel engines are used in a wide range of industry such as agriculture, transportation, building and energy production due to their high efficiency. Besides, with the development in electronics technology diesel engines are being more and more used in automobiles. Because a good many of diesel engines are being used, we are in need of petroleum more than ever. On the other hand, it is also commonly recognized today that the world petroleum energy resources are finite, thus many researchers have been carried out to find suitable alternative fuels to petroleum products. Researches, on alternative fuels to petroleum based fuels, are increased since petroleum fuels are finite, as well as pollution resulted from their combustion have sincere affects on environments. It is important for an alternative diesel fuels to be technically acceptable, economically competitive, environmentally acceptable and easily available. Many researchers have concluded that biodiesel holds promise as an alternative fuel for diesel engines. Therefore, biodiesel can be used in diesel engines with few or no modifications. Diesel-fuel blends with biodiesel have superior lubricity, which reduces wear and tear