Emission characterization of diesel engine run on coconut oil biodiesel its blends and diesel

Nicholas A Musa,Georgina M Teran,Saraki A Yaman

doi:10.4314/jasem.v20i2.10

Abstract

The use of biodiesel in running diesel has been called for, with a view to mitigating the environmental pollution, depletion, cost and scarcity associated with the use diesel in running diesel engine. So the need to characterize the emissions from these biodiesel, cannot be overemphasized, hence this paper presents the evaluation of the emissions of particulate matter (PM), carbon monoxide(CO), hydrocarbon(HC) and oxides of nitrogen (NOX) from diesel engine run on coconut oil biodiesel, its blends and diesel for comparison. The result of the evaluation showed that NOX emission increased with increase in percentage of the biodiesel in the blend, while PM, CO, HC decreased with increase in the percentage biodiesel in the blend. In comparison with diesel, diesel has the least emission of NOX and the highest emission of PM, CO and HC.Keywords: Diesel engine, diesel, coconut oil biodiesel, blends, emissions

Highlights

It is quite common nowadays to learn that every country is in the race to find suitable and affordable alternative fuel options for diesel engine (Savariraj et al, 2013)
Xue et al(2011) remarked that the use of biodiesel leads to the substantial reduction in particulate matter (PM), HC and carbon monoxide (CO) emissions accompanying with the imperceptible power loss, the increase in fuel consumption and the increase in nitrogen oxides (NOx) emission on conventional diesel engines with no or fewer modification
The aim of the study is to characterize the emissions from diesel engine run on coconut oil biodiesel and its blend in comparison with diesel

Summary

Introduction

It is quite common nowadays to learn that every country is in the race to find suitable and affordable alternative fuel options for diesel engine (Savariraj et al, 2013). Chiatti et al (2014) asserted that increasing attention has been devoted to the use of biodiesel fuel in internal combustion diesel engine due to its positive attributes as compared to the other types of fuel: e.g., being a renewable source, nonpetroleum-based, with lower carbon monoxide, hydrocarbon, and particulate matter emissions. Xue et al(2011) remarked that the use of biodiesel leads to the substantial reduction in PM, HC and CO emissions accompanying with the imperceptible power loss, the increase in fuel consumption and the increase in NOx emission on conventional diesel engines with no or fewer modification. Biodiesel has become an interesting alternative to be used in diesel engine which is due to the similar properties to the conventional fossil diesel fuel in terms of power and torque and none or very minor of engine modification is required (Belaid et al, 2011) cited by Islam et al, (2014). A lot of work has been done partly or wholly by many researchers on emissions and performance of diesel engine running on biodiesel from edible and non-edible plants and its blends. Musa et al (2016) remarked that coconut oil and biodiesel produced from it have been characterized and from the results obtained and discussed, it became very evident that

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Conclusion