Effect of the Injection Timing on the Performance of a Diesel Engine Using Diesel-Biodiesel Blends

Abstract

In this study, the effect of fuel injection timing on the performance of a diesel engine was investigated experimentally and analytically using diesel-biodiesel blends. Different experiments were carried out on the diesel engine at engine speeds of 1200, 1600, 2000 and 2400 rpm. The injection timing was regulated for 10, 15 and 20 degree crank angle before top dead centre. The experimental results of engine torque, brakespecific fuel consumption (BSFC), cylinder pressure, and exhaust gas temperature for fuel blends of B20, B40, and B100 at different engine speeds and injection timings were recorded. The results showed that advancing the fuel injection timing for fuel blends of B20, B40, and B100 increased engine torque by approximately 2.1%, 2.9% and 6.3%, respectively, and decreased maximum BSFC by approximately 2.7%, 3.3% and 6.6%, respectively. Then, an artificial neural network (ANN) was used to predict engine performance. The injection timing, engine speed, and fuel blends were used as input parameters whereas engine performance parameters such as engine torque, BSFC, peak cylinder pressure, and exhaust gas temperature were used as the output parameters. The results showed that an ANN is a good tool to predict engine performance.

Performance and emission characteristics of compression ignition engine using methyl ester blends of jatropha and fish oil

“…Biodiesel has low sulphur content, low aromatic content and oxygen containing compounds due to which the emissions of SO2, CO2, HC and PM are reduced. Besides, it has good ignition ability in engine owing to its high cetane number compared to that of conventional diesel fuel [10,[18][19][20][21][22][23].…”

Comparative study of diesel engine performance and emission with soybean and waste oil biodiesel fuels

“…This increasing energy demand should be met by a cleaner source of energy [3,4]. Biodiesel is made from renewable plant or animal fats (tallow) that contain fatty acids [5][6][7][8], which can be converted into biodiesel using the transesterification reaction [9,10]. Biodiesel can also be produced from a wide array of feedstocks such as waste cooking oil, edible and non-edible oil seeds, wood and wood waste etc.…”

The effect of injection timing on the performance and emission of direct injection CI engine running on diethyl ether-diesel blends

“…If injection starts later (retarded injection timing), air temperature and pressure are slightly higher initially, and a decrease in ignition delay would occur. This means that injection timing variation has a strong effect on ignition delay, and consequently on engine combustion and emissions because of the changing maximum pressure and temperature in engine cylinder [14]. Patil and Thipse [11] reported that the addition of DEE to diesel fuel causes retardation of dynamic injection timing due to problems encountered with fuel pump and lowers density and viscosity of DEE-diesel blends.…”