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Experimental tests have been carried out to evaluate the performance, emission and combustion characteristics of a diesel engine using Neat poon oil and its blends of 20%, 40%, and 60%, and standard diesel fuel separately. The common problems posed when using vegetable oil in a compression ignition engine are poor atomization; carbon deposits, ring sticking, etc. This is because of the high viscosity...
In the present work, the effect of using neat orange oil, optimum orange oil–diesel blend and the optimum flow rate of DEE with orange oil are evaluated for the performance, emissions and combustion characteristics of a single cylinder, diesel engine. The experimental results show that carbon monoxide (CO), hydrocarbon (HC) and smoke emissions decrease while oxides of nitrogen (NO x ) emissions...
In this study, the effects of ethanol–gasoline (E5, E10) and methanol–gasoline (M5, M10) fuel blends on the performance and combustion characteristics of a spark ignition (SI) engine were investigated. In the experiments, a vehicle having a four-cylinder, four-stroke, multi-point injection system SI engine was used. The tests were performed on a chassis dynamometer while running the vehicle at two...
Experiments were conducted to evaluate the combustion, performance and emission parameters of a single cylinder, four stroke, air cooled, direct injection diesel engine, fueled with used transformer oil (UTO) and six of its diesel blends on varying the UTO concentration from 10% to 60%, at a regular interval of 10% by volume basis. The results were analyzed and compared with diesel operation. Increase...
An experimental investigation has been carried out to evaluate the effect of using diethyl ether as additive to biodiesel on the combustion, performance and emission characteristics in an unmodified diesel engine at different loads and constant engine speed. The results indicate that peak cylinder pressure and heat release rate is higher for BD5 (5% (by vol.) diethyl ether blended biodiesel) than...
Early investigations on the use of tyre pyrolysis oil (TPO) blended with diesel of 10–90% exhibited longer ignition delay, as a result of the lower cetane number of TPO, as well as the blends. In the experimental investigation, TPO was blended with Jatropha Methyl Ester (JME), whose cetane number is higher than that of diesel, and used as an alternative fuel in a single cylinder, four stroke, air...
The viscosity and density of CJO (crude Jatropha oil) were reduced by heating it using the heat from exhaust gas of a diesel engine with an appropriately designed helical coil heat exchanger. Experiments were conducted to evaluate the combustion characteristics of a DI (direct injection) diesel engine using PJO (preheated Jatropha oil). It exhibited a marginally higher cylinder gas pressure, rate...
Depletion of petroleum reserves and prevailing stringent emission legislations have motivated the researchers to develop and introduce alternative automotive fuels with an objective of reducing global emissions and reducing consumption of conventional fuels such as gasoline and diesel. Natural gas has emerged as a widely accepted and used alternative automotive fuel in last couple of decades. However...
In recent years there have been significant developments seen in utilization of different derivatives obtained from pyrolysis of waste automobile tyres, as alternative fuels for CI engines. In an investigation, a blend comprising 40% light fraction pyrolysis oil obtained from a tyre recycling plant, 50% diesel and 10% an oxygenate additive Dimethyl carbonate (40LFPO+10DMC) was examined as an alternative...
Among primary alcohols, bio-n-butanol is considered as a promising alternative fuel candidate. However, relatively low production efficiency and high cost of component recovery from the acetone-n-butanol-ethanol (ABE) or isopropanol-n-butanol-ethanol (IBE) fermentation processes hinders industrial-scale production of bio-n-butanol. Hence it is of interest to study the intermediate fermentation product,...
In this study, we compared three different blended (20/80 by vol.) biodiesels of rice bran, neem, and cottonseed oils with varying degree of unsaturation. All three biodiesel blends decreased the brake thermal efficiency and increased the exhaust gas temperature of a single-cylinder diesel engine. They decreased CO, hydrocarbon, and smoke emissions, but increased NOx emissions. The biodiesels provided...
This study highlights the effects of mustard oil biodiesel fuel blends on combustion, performance and emission characteristics in depth. For this purpose, a single cylinder DI diesel engine was run with mustard oil biodiesel-diesel fuel blends (M10, M20, M30) and standard diesel fuel (D100) at maximum brake torque speed of 2200rpm and different engine loads of 3.75, 7.5, 11.25, 15Nm and full load...
In this study, the influence of the various alcohol additions in diesel fuel on combustion, performance, and exhaust emission characteristics of a single-cylinder diesel engine was investigated at different loads. The alcohol blends obtained by mixing 10% of butanol, ethanol, and methanol with diesel fuel (called B10, E10 and M10 respectively) and petroleum-based diesel fuel (D100) were used in the...
The performance and emission characteristics of LPG fuelled SI engine is determined by efficient combustion. This depends on the in-cylinder motion of intake homogenous charge generated by combustion chamber geometry. The inherent, unsteady, turbulent motion of the mixture helps in flame propagation which in turn enhances the combustion rate. Compression ratio, charge squish velocity and turbulent...
The practice of the green renewable fuels in diesel engines is increasing concerning the progressive deterioration of the green environment and the scarcity of the fossil fuels. In these aspects, several experiments in dual fuel mode (DFM) at different global fuel–air equivalence ratio (Φglobal), intake charge preheating and loads have been carried out considering biogas as the inducted renewable...
Biodiesel with small modification in its constituent has been often subjected to experimental analyses in diesel engine in order to substitute it as fuel for diesel engine. Environmental friendly aspects like biodegradability, renewability, easy and safety handling characteristics of biodiesel has been desired by all. But, the biodiesel has the negative side apart from its meritorious side. The performance...
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