The Influence of Injection Timing on Performance Characteristics of Diesel Engine Using Jatropha Biodiesel with and without Partial Hydrogenation

Rizqon Fajar, Hari Setiapraja

Abstract

Experimental research has been conducted to investigate the effects of blend of hydrogenated and unhydrogenated Jatropha biodiesel with diesel fuel in volume ratio of 30:70 (B30) on combustion characteristics (BSFC, thermal efficiency and smoke emission) of single cylinder diesel engine. In this experiment, engine speed was kept constant at 1,500, 2,500, and 3,500 rpm with maximum engine load at BMEP 5 bar and injection timings were varied. Experimental result showed that at engine speed 1,500 rpm, BSFC of B30 hydrogenated and unhydrogenated Jatropha biodiesel were higher than it of diesel fuel at all injection timings (10° to 18° BTDC). At the same condition, partial hydrogenated Jatropha biodiesel showed higher BSFC than unhydrogenated Jatropha biodiesel. However, the difference in BSFC became smaller for all fuels at engine speed 2,500 rpm and 3,500 rpm at all injection timing. Jatropha biodiesel with and without partial hydrogenation tend to have higher thermal efficiency compared with diesel fuel at all engine speed and injection timing. The best injection timings to operate B30 Jatropha biodiesel with and without hydrogenation were 14°, 18° and 24° BTDC at engine speed 1,500, 2,500, and 3,500 rpm respectively. This conclusion was deduced based on the minimum value of BSFC and the maximum value of thermal efficiency. Smoke emissions for all fuels were in the same level for all conditions.



Keywords


jatropha; hydrogenation; BSFC; thermal efficiency; smoke emission

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References


A. Sarin et al., “Effect of Blends of Palm-Jatropha-Pongamia Biodiesels on Cloud Point and Pour Point,� Energy, vol. 34, pp. 2016-2021, 2009. crossref

D. Chaithongdee et al., “Effect of Antioxidant and Additives on the Oxidation Stability of Jatropha Biodiesel,� Kasetsart Journal Natural Science, vol 44, pp. 243-250, 2010.

Y.H. Chen et al., “Property Modification of Jatropha Oil Biodiesel by Blending with Other Biodiesels or Adding Antioxidants,� Energy, vol. 36, pp. 4415-4421, 2011. crossref

R. Fajar et al., “Predicting Fuel Properties of Partially Hydrogenated Jatropha Methyl Ester: Used for Biodiesel Formulation to Meet the Fuel Specification for Automobile and Engine Manufacturer,� Kasetsart Journal Natural Science, vol. 46, pp. 629-637, 2012.

K. Wadumesthrige et al., “Effects of Partial Hydrogenation, Epoxidation, and Hydroxylation on the Fuel,� Fuel Processing Technology, vol. 90, pp. 1292-1299, 2009. crossref

C. E. Papadopoulos et al., “Optimization of Cotton Seed Biodiesel Quality (critical properties) through Modification of its FAME Composition by Highly Selective Homogeneous Hydrogenation,� Bioresource Technology, vol. 10, pp. 1812–1819, 2010. crossref

T. Ganapathy et al., “Influence of Injection Timing on Performance, Combustion and Emission Characteristics of Jatropha Biodiesel Engine,� Applied Energy, vol. 88(12), pp. 4376-4386, 2011. crossref

B. S. Chauhan et al., “A Study on the Performance and Emission of a Diesel Engine Fueled with Jatropha Biodiesel Oil and its Blends,� Energy, vol. 37, pp. 616-622, 2012. crossref

C. Y. Chen et al., “Fuel Properties and Combustion Characteristics of Jatropha Oil Biodiesel–Diesel Blends,� Journal of the Taiwan Institute of Chemical Engineers, vol. 44, pp. 214-220, 2013. crossref

S. Puhan et al., “Effect of Biodiesel Unsaturated Fatty Acid on Combustion Characteristics of a DI Compression Ignition Engine,� Biomass and Bioenergy, vol. 34, pp. 1079-1088, 2010. crossref

R. Fajar et al., “Efek Penggunaan Biodiesel Kualitas Standar pada Kendaraan Komersial,� Laporan Teknis BTMP-BPP Teknologi, 2004.


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