Abstract
Biofuel includes biodiesel is introduced to overcome the air pollution problems. Biodiesel is the sustainable and alternative fuel that derived from edible and non-edible oil produced from bio-originated species, plants, and animals. This paper presents the simulation analysis on the effect of fuel temperature variations on diesel engine performance and emission using palm-biodiesel. A one-dimensional numerical analysis, Diesel RK software is used to simulate a single cylinder, four-stroke diesel engine on the performance and emission when operated at a full load condition using fuel temperature variations ranging 300 K to 333 K. Results showed that simulated results for brake power and brake torque were 0.7% each when compared to the highest and lowest fuel temperature ranging from 333 K to 300 K. Moreover, higher fuel temperature for palm biodiesel tends to produce lower exhaust gas temperature and brake specific fuel consumption at a constant engine speed of 2400 rpm. It can be concluded that from the study, fuel temperature variations of biodiesel could produce a significant effect regarding engine performance and emission that influence the driving economy of the engine.
Highlights
Biodiesel is a substitute fuel that derived from edible and non-edible oils of bio-originated feedstocks through the transesterification process
This paper presents the simulated data of palm biodiesel when fuelling a single cylinder diesel engine in Diesel RK software
Higher fuel consumption of palm biodiesel is mainly attributed to the lower heating value (LHV) of palm biodiesel that exhibited an average value of 37.08 MJ/kg that is much lower compared to that mineral diesel
Summary
Biodiesel is a substitute fuel that derived from edible and non-edible oils of bio-originated feedstocks through the transesterification process. Biodiesel has comprised all types of fatty acid methyl esters (FAMEs) originated from different sustainable biofeedstocks, chemically produced using the transesterification process with methanol as a chemical catalyst [1]. The transesterification process is the most credible method in biodiesel production which requires an alkaline liquid catalyst, usually sodium or potassium methoxide for the chemical reaction between triglycerides and alcohol. Biodiesel and glycerol formation during transesterification process is the result of the chemical reaction between an alcohol and fatty acids [2]. Most of the edible and nonedible oils from various bio-feedstocks are qualified to be transesterified into biodiesel fuel [3]. Edible oils include vegetable oils are practical to be used in common diesel engines without any functional problems when several methods are adopted in reducing their high density and viscosity including petrol-diesel, pyrolysis, microemulsification (co-solvent blending) and transesterification
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