Volume No. 2 Issue No.: 2 Page No.: 164-172 October-December 200

 

COMBUSTION, PERFORMANCE AND EMISSION CHARACTERISTICS OF WATER-BIODIESEL EMULSION AS FUEL WITH DEE AS IGNITION IMPROVER IN A DI DIESEL ENGINE

 

B. Sachuthananthan*1 and K. Jeyachandran2

1. Department of Mechanical Engineering, Anna University, Chennai (India)

 

Received on : August 27, 2007

 

ABSTRACT

 

Investigations are carried out here to study the combustion, performance and emission characteristics on a single cylinder diesel engine by adding diethyl ether(DEE) as an additive with the constant ratio of Water-Biodiesel emulsion(WBE) as fuel. Literature review indicates that significant work is not carried out with respect to its performance analysis and in regard to pollution level. A four-stroke 5HP single cylinder DI diesel engine was used for the experiment with 5%, 10% and 15% blends of DEE with a constant 30% Water-Biodiesel emulsion as fuel. It was found that DEE when added to water-biodiesel emulsion can significantly lower NOx and smoke levels without adverse effect on brake thermal efficiency. High HC and CO which are problems with the water-biodiesel emulsions can be significantly lowered with the addition of DEE particularly at high outputs. Even at part loads the addition of DEE can improve the performance as compared to neat water-biodiesel emulsion without any adverse effect on NOx emission. Test results indicate that 15% DEE blend gives better performance and lower emissions compared to other blends of DEE and Water-Biodiesel emulsion. Hence 15% DEE can be blended with emulsified fuel to improve the performance and to reduce emissions like smoke density, particulate matter and oxides of nitrogen.

 

Keywords : Water-Biodiesel emulsion(WBE), Diethyl Ether addition-(DEA), NOx emission, Reduction, DI diesel engine, Combustion

 

 

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