Combined effect of injection timing, EGR and injection pressure in reducing the NO_xemission of a biodiesel blend

Abstract

In this study, an attempt was made to reduce the higher oxides of nitrogen (NO x ) emission of a crude rice bran oil methyl ester (CRBME) blend through modification of combustion process by retarding fuel injection timing and exhaust gas recirculation at an increased fuel injection pressure. At modified condition, delay period and peak pressure of CRBME blend were lower than those at normal condition. The occurrence of maximum heat release rate retarded with a higher magnitude when compared with normal condition. Experimental results show that as a result of combustion modification, NO x and carbon monoxide emissions were reduced significantly with marginal increase in smoke density. Brake thermal efficiency and unburnt hydrocarbon emissions of the engine were increased significantly as a result of this modification process. This investigation shows that the NO x emission of a biodiesel blend can be reduced with less sacrifice on smoke density and increase in the brake thermal efficiency by modifying the combustion process.

Effect of Injection Parameters: Injection Timing and Injection Pressure on the Performance of Diesel Engine Fueled with Palm Oil Methyl Ester

“…Ten holes nozzle geometry performed well in terms of better atomization and reduction of NOx emission in diesel engine at full load condition (Karra and Kong, 2010). By modification of combustion process, the oxides of nitrogen and CO emissions were highly reduced but increase in the BTE, unburnt HC and smoke level in biodiesel fueled diesel engine (Saravanan et al, 2014). Suggested that by varying number holes in nozzle injector reducing the oxides of nitrogen in biodiesel fueled diesel engine and minimize the unburnt HC, CO and BSFC (Subhash and Subramanian, 2014).…”

Effect of modifying bowl geometry for IC engine fueled with diesel and Biofuels - Review

“…These kinds of experiments for combining two techniques have been applied like emulsion process & EGR, additives & EGR [73][74][75], and EGR & ITR [55,76]. Saravanan et al [77] experimented to see how a combination of 10-12 % EGR and 210-240 bar injection pressure influences diesel engines fuelled by rice branbased biofuel and found improved outcomes.…”

Enhancement of household refrigerator energy efficiency by studying the effect of refrigerant charge and capillary tube length

“…The overall performance has proved that the 100 g of R600a/R290 (60/40 by wt%) is the best long-term alternative refrigerant to phase out R134a. Saravana Kumar and Selladurai [11,12], have proposed a new method to increase the available energy of saturated hydrocarbons mixture of R290/R600a on a domestic refrigerator. By involving exergy analysis the performance of different refrigerants is analysed.…”