Jatropha Oil Case Study

808 Words 4 Pages
Straight vegetable oils (SVO) are a promising alternative to diesel oil (DO) for diesel engines, due to having comparable properties to mineral diesel, being easy to produce compared to counterparts and offering smaller emissions footprints. Therefore, the experimental study aims to evaluate the potential and influence of Jatropha oil (JO) as diesel engine fuel. Endurance long term operation tests of 300 hours for JO and 100 hours for DO were conducted on a small single cylinder 6.5 kW diesel engine generator to investigate the durability, performance and emission characteristics of the engine with the two different fuelling conditions. The experimental results demonstrate that engine performance and emissions characteristics are not stable and inferior compare to DO. Also, spray behaviour tests were conducted to analyse the effect of injection parameters such as temperature, pressure and diameter of nozzle on the spray characteristics of JO and DO. The findings show that preheating JO with an injection pressure of 60 MPa advances the breakup time and decreases the …show more content…
The foreseeable future highlights various alternative sources of energy with potential to reduce emissions and supplant heavy fuel oil (HFO) in two-stroke diesel engines. The possible alternatives are liquefied natural gas (LNG), hydrogen, biogas and biofuels such as straight vegetable oil and biodiesel. Straight vegetable oils are promising and an appropriate alternative due to being safe with a higher flash point than diesel, offering a smaller carbon footprint and do not require significant modifications to the engine. Also, SVOs are cheaper than their counterparts such as biodiesels, which have to go through a transesterification step, thus energy input required increasing the cost of

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