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Environmental Science and Pollution Research

, Volume 25, Issue 35, pp 35429–35439 | Cite as

Multi-objective optimization of diesel engine performance and emissions fueled with diesel-biodiesel-fusel oil blends using response surface method

  • Amin Hassan Pour
  • Seyed Mohammad Safieddin Ardebili
  • Mohammad Javad Sheikhdavoodi
Research Article
  • 40 Downloads

Abstract

The interest in research on alcohol-based biofuels is on the rise. Fusel oil is a long-chain alcohol and a by-product of bioethanol synthesis. This study analyzed the effects of blended levels of fusel oil and biodiesel in diesel fuel on the performance and exhaust emissions of a single-cylinder diesel engine. The effects of input parameters (i.e., fusel oil content (%), biodiesel content (%), engine speed (rpm), and engine load (%), each at five levels) on response parameters (i.e., power, torque, fuel consumption, and emission factors, namely NOX, UHC, CO, and CO2) were investigated. Different levels were used for analyzing fusel oil (0, 5, 10, 15, and 20%), biodiesel (0, 5, 10, 15, and 20%), engine load (0, 25, 50, 75, and 100%), and engine speed (1400, 1700, 2000, 2300, and 2600 rpm). Response surface method (RSM) was employed to maximize engine performance and minimize exhaust emissions. A blend of D90F5 B5 (5% fusel oil, 5% biodiesel, and 90% petro-diesel) and engine speed of 2026 rpm at load 46% were predicted to be an optimal value. Using a 72% desirability function, optimum results for torque (14.2 Nm), power (3.37 kW), and brake-specific fuel consumption (356.9 g/kWh) were also obtained from RSM. Based on the optimized inputs, the optimized values of different output pollutants were 0.14 vol.% for CO, 1.62 vol.% for CO2, 23.7 ppm for UHC, and 85.17 ppm for NOX. The result illustrated that use of fusel oil decreased NOX emissions up to 20%, while UHC and CO emissions increased up to 32% and 22%, respectively. In addition, the use of fusel oil content (up to 10%) in the blended fuels improved the engine power by 5.6%.

Keywords

Fusel oil Biodiesel Performance Emissions Response surface method 

Nomenclature

F100

Fusel oil

D100

Pure diesel

F20

80% gasoline+20% fusel oil

BDE20

20% ethanol in diesel and biodiesel blends

DBF

Diesel+biodiesel+fusel oil

D91B6E3

91% diesel+6% biodiesel+3% ethanol

D80B10F10

80% diesel+10% biodiesel+10% fusel oil

D90B0F10

10 vol% fusel oil blended with diesel

D90B5F5

90% diesel+5% fusel oil+5% biodiesel

LTC

Low-temperature combustion

BSFC

Brake-specific fuel consumption

DoE

Design of experiment

NOX

Nitrogen oxides

UHC

Unburned hydrocarbons

CO

Carbon monoxide

CO2

Carbon dioxide

RSM

Response surface method

CCD

Central composite design

Notes

Funding information

This study was financially supported by grant no: 970106 of the Biotechnology Development Council of the Islamic Republic of Iran.

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Department of Biosystems EngineeringShahid Chamran University of AhvazAhvazIran

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