Performance and Emissions of CI Engine Fuelled With Preheated Vegetable Oil and Its Blends – A Review (original) (raw)
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Experimental Study Of Vegetable Oil -Diesel Blends On The performance Of Compression Ignition Engine
The aim of the study is to investigate the effects oils vegetable blends on the performance of single cylinder compression ignition Engine. The three types of vegetable oil appeared to affect the engine performance in a similar way and compared well with diesel fuel, this paper included prepared four samples fuels . They include (10% sunflower oil-90% diesel blends) , (10% olive oil -90% diesel blends), (10% corn oil-90% diesel blends) and pure diesel . The testing achieved between different fuel simples by using the engine four stroke type (TD111) with a single-cylinder and compression ratio (21:1) .
Performance evaluation of a vegetable oil fuelled compression ignition engine
Renewable Energy, 2008
Fuel crisis because of dramatic increase in vehicular population and environmental concerns have renewed interest of scientific community to look for alternative fuels of bio-origin such as vegetable oils. Vegetable oils can be produced from forests, vegetable oil crops, and oil bearing biomass materials. Non-edible vegetable oils such as linseed oil, mahua oil, rice bran oil, etc. are potentially effective diesel substitute. Vegetable oils have high-energy content. This study was carried out to investigate the performance and emission characteristics of linseed oil, mahua oil, rice bran oil and linseed oil methyl ester (LOME), in a stationary single cylinder, fourstroke diesel engine and compare it with mineral diesel. The linseed oil, mahua oil, rice bran oil and LOME were blended with diesel in different proportions. Baseline data for diesel fuel was collected. Engine tests were performed using all these blends of linseed, mahua, rice bran, and LOME. Straight vegetable oils posed operational and durability problems when subjected to long-term usage in CI engine. These problems are attributed to high viscosity, low volatility and polyunsaturated character of vegetable oils. However, these problems were not observed for LOME blends. Hence, process of transesterification is found to be an effective method of reducing vegetable oil viscosity and eliminating operational and durability problems. Economic analysis was also done in this study and it is found that use of vegetable oil and its derivative as diesel fuel substitutes has almost similar cost as that of mineral diesel. r
Proceedings of the World Renewable Energy Congress – Sweden, 8–13 May, 2011, Linköping, Sweden, 2011
A comparative study has been carried out on the performance of compression ignition engine (CI) using common diesel fuel (CDF) blended with both refined soybean (Glycin max) and sunflower (Helianthus annus) oil as straight vegetable oil (SVO) as well as their corresponding fatty acid methyl esters (FAME) with respect to CDF. Low cost methyl esters of vegetable oil were prepared using own patented technique where ultrasonic energy has been found to be beneficial. SVOs and corresponding FAMEs were blended with CDF separately at different proportion to act as fuel for research CI engine. Both engine performance and fuel combustion characteristics were evaluated from the present study at different loads with varying compression ratios. Graphical relationships of load (kg) in engine against various engine performance parameters such as: brake thermal efficiency (%), brake specific fuel consumption ((kg/kWh), brake mean effective pressure (bar), cumulative heat release (kJ) and emission characteristics have been plotted for each set of fuels with respect to CDF. The relationship developed identifies the advantages of using blended FAME prepared with the patented processes over their corresponding SVO and CDF in the CI engine.
INVESTIGATION OF COMPRESSION IGNITION ENGINE FUELLED WITH DIESEL AND BIODIESEL (MAHUA) BLEND
The recent energy trend makes an opportunity to look for substitutes of fossil fuels. Vegetable-oil-based fuels have been considered to be good alternatives to fossil fuels for diesel engines. Bio-fuel commands crucial advantages such as technical feasibility of blending, superiority from the environment and emission reduction angle, its capacity to provide energy security to remote and rural areas and employment generation. This paper presents the results of emission and performance characteristics founded in a single cylinder direct injection diesel engine fuelled with blend (50 MOME) of mahua oil methyl ester.
The increase in fuel price due to inflation and the ruminative shortage in the supply of conventional fuels have led to a serious research and development on the alternate fuel sources. In India one of the option is plant which are available in plenty and can be used as bio fuels. The current utilization of non-edible oilseeds which are available is very low. Bio diesel from 'Mahua' seed is one option. 'Mahua' is known as 'Illupaimaram' in Tamil and 'Hippi' in Kannada, can be successfully grown in wastelands and dry lands. The seeds of the tree are popularly known as Indian butter tree. In this work, experiments were carried out to study and analyses the emission, combustion and performance characteristics of the mahua methyl esters. For the analysis, the setup consisting of a single cylinder, water-cooled, four stroke diesel engines is used. Initially the engine is run with the diesel fuel and the performance was analyzed. Then the experiments were conducted with blended fuels, mahua methyl esters (B20, B40 and B60) , added in volume basis, and the performance was analyzed. All the tests were conducted with varying conditions of load over the entire range of engine operation. The engine performance parameters such as the BTE (Brake thermal efficiency), SFC (Specific fuel consumption), and emission from exhaust (CO2, CO, NOx, HC and O2) were recorded. The results of the selected mahua mixtures are compared with the neat diesel fuel. Engine performance using the mahua oil and its blends were on par with the experiments performed using pure diesel fuel at most of the loads. The carbon monoxide (CO) and hydrocarbon (HC) emissions of the mahua oil and its blends were found to be lower than that of the diesel fuel at all loads. The carbon dioxide (CO2) and nitrogen oxides (NOx) emissions were higher for mahua oil blends than that of pure diesel fuel at all loads.
Experimental Investigation of Effect of Straight Vegetable Oil Fuel on Engine Performance Parameters
2013
Experimental investigations have been carried out to evaluate the effect of addition of ethanol to vegetable oil on performance and emission characteristics of a compression ignition engine. Use of straight vegetable oil (SVO) for diesel engine is limited due to their higher viscosity and poor volatility. The SVO shows lower thermal efficiency and higher unburnt hydrocarbon emissions, etc. In long term, SVO exhibits injector coking, fuel pump damage and fuel filter clogging, etc. To reduce the viscosity and to increase the volatility of the fuel, an ethanol is added to the vegetable oil so that thermal efficiency and emissions can be improved. During investigation, blends of vegetable oil with different proportions of ethanol are prepared. Blends BSVO-80 and BSVO-70 are prepared using 20% and 30% of ethanol with SVO respectively. Basic properties like viscosity, calorific value, specific gravity, etc. are evaluated for all test fuels. The blends of SVO with alcohol show lower viscos...
In our present work Mahua-diesel blend was used as an alternate fuel for diesel engine. The properties of mahua oil were determined. Mahua oil is converted to mahua oil methyl esters (MOME) by transesterification process. The performance parameters of single cylinder diesel engine were calculated with the blends (B5, B10, B20, and B30) along with the standard diesel and graphs were plotted. The parameters obtained by the above tests were compared with the base line data by using diesel and optimum mahua oil blend-B10 is obtained. This blend has shown best performance by increase in Mechanical efficiency and decrease in brake specific fuel consumption. Finally results shows that mahua oil methyl esters can be used as alternate fuel for C.I engine
Performance and Emission Characteristics of Diesel Engine Fuel Blended with Mahua Oil and Diesel
In this paper, we would like to review the compatibility to use vegetable oils as a blended fuel for CI Engines at different injection pressure & inlet air pressure. The main problem with the vegetable oils is that they have very high viscosity, which leads to injection problem in Diesel Engines. Various techniques are used to reduce the viscosity; one of its techniques is fuel blending. Commonly vegetable oils available are Jathropa, Linseed, Rapeseed, Mahua ,Palm oil etc. are blended with diesel fuel in constant speed single cylinder & subsequently showing its effects on performance and emission characteristics of diesel engine. The vegetable oil is blended with varying proportions like 10%, 20% and 30% with diesel fuel in the CI Engine and find most preferable & optimize combination of blend for diesel engines.
Applied Energy, 2010
Many studies are still being carried out to find out surplus information about how vegetable based oils can efficiently be used in compression ignition engines. Raw rapeseed oil (RRO) was used as blended with diesel fuel (DF) by 50% oil-50% diesel fuel in volume (O50) also as blended with diesel fuel by 20% oil-80% diesel fuel in volume (O20). The test fuels were used in a single cylinder, four stroke, naturally aspirated, direct injection compression ignition engine. The effects of fuel preheating to 100°C on the engine performance and emission characteristics of a CI engine fueled with rapeseed oil diesel blends were clarified. Results showed that preheating of RRO was lowered RRO's viscosity and provided smooth fuel flow Heating is necessary for smooth flow and to avoid fuel filter clogging. It can be achieved by heating RRO to 100°C. It can also be concluded that preheating of the fuel have some positive effects on engine performance and emissions when operating with vegetable oil.
In this work, a simulation model based on first law of thermodynamics is used for analyzing the performance of compression ignition engine fuelled with diesel, straight honge oil and its blends with ethanol. A Double wiebe’s function is used for computing heat release rate (premixed and diffusive phase of combustion separately). A Range-kutta fourth order algorithm is used to calculate temperature at every crank angle during combustion phenomenon. In present investigation, neat honge oil and its different blends with ethanol namely straight honge oil (H100), HE80 (80% honge oil and 20% ethanol), HE70 (70% honge oil and 30% ethanol) and HE60 (60% honge and 40% ethanol) are used as test fuels. It is observed that brake thermal efficiency with HE70 is higher than other test fuels, however it is lower than diesel at all load conditions. Results of model (BTE & EGT) for HE70 are validated by conducting experiments and it is found that the simulated values are in closer approximation with experimental results