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Simultaneous Control of Oxides of Nitrogen and Soot in CRDI Diesel Engine Using Split Injection and Cool EGR Fueled with Waste Frying Oil Biodiesel and Its Blends

  • R. AnandEmail author
Chapter
Part of the Energy, Environment, and Sustainability book series (ENENSU)

Abstract

Air pollution is one of the major threats to human health and living organisms, and its control is a greater challenge due to rapid growth in population and industrialization. Diesel vehicle exhaust emissions soot and nitrogen oxides (NO x ) are the major causes of global warming, acid rain, and photochemical smog. Fuel quality improvement, low-temperature homogeneous combustions, and high turbulent combustions are the most important diesel engine emission control strategies to restrict the air pollution. Use of different gaseous fuels, CNG, LPG, hydrogen and renewable liquid fuel biodiesel, ethanol, etc., in diesel engine reduces the engine out emissions to a great extent. Common rail direct injection (CRDI) has several advantages compared to the conventional mechanical fuel injection system. The high-pressure injection enhances the air-fuel mixture to obtain the better thermal efficiency as well as lower emissions. Exhaust gas recirculation (EGR) is one of the predominant methods for controlling the NO x emission in internal combustion engines. EGR with split injection strategy is one of the effective methods to decrease soot and NO x emissions simultaneously without much drop in engine efficiency.

Nomenclature

ASTM

American Society for Testing and Materials

B20

20% biodiesel

B40

40% biodiesel

B60

60% biodiesel

B80

80% biodiesel

B100

Biodiesel

BMEP

Brake mean effective pressure (bar)

BSEC

Brake specific energy consumption (MJ/kWh)

BSFC

Brake specific fuel consumption (kg/kWh)

aTDC

After top dead center

bTDC

Before top dead center

BTE

Brake thermal efficiency (%)

CD

Combustion duration (°CA)

CH3OH

Methanol

CH3ONa

Sodium methoxide

CO

Carbon monoxide (% vol.)

CO2

Carbon dioxide (% vol.)

CRDI

Common rail direct injection

DP

Dwell period

EGR

Exhaust gas recirculation

FSN

Filter smoke number

HRR

Heat release rate (J/°CA)

ME

Methyl ester

NO

Nitric oxide (ppm)

ID

Ignition delay (°CA)

SI

Split injection

SOI

Start of injection

SOC

Start of combustion

UBHC

Unburned hydrocarbon (ppm)

WFO

Waste frying oil

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Copyright information

© Springer Nature Singapore Pte Ltd. 2018

Authors and Affiliations

  1. 1.Department of Mechanical EngineeringNational Institute of TechnologyTiruchirappalliIndia

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