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Kurdistan Regional Government

Ministry of Higher Education and Scientific Research Sulaimani Polytechnic University

Characterization of Different types of Diesel Soot (EGR Cooler) Samples

Outline

Prepared by:

Soran Omed Mamand Arf

Introduction

A substantial percentage of trucks,

buses, cars, ships, etc.,

are powered by diesel engines which

produce many tons of air pollutants.

Reducing diesel pollution has become

a public priority.

Some of the main pollutants of the

exhaust gases from these engines

are particulate matter (like soot)

and nitrogen oxides (NOx) .

Introduction

Continue......

Soot is produced during the incomplete combustion and is composed of fine particles of carbon coated with organic chemicals.

For example,

Polycyclic aromatic hydrocarbons (PAH), which are well-known to be harmful to human health,

And besides they are considered to contribute to soot inception process.

The aim of this work

Introducti

Soot deposition on exhaust gas recirculation cooler (EGRc) , produces the malfunctioning of this device, and this fact may lead to the fulfillment of NOx standards.

The increase of soot fouling implies a decrease of thermal efficiency and the raise of pressure drop what involves greater EGR gas temperature and lower EGR gas flow.

Methodology

figure 1: The HP EGR MODELS OF ENGINE

Results and Discussion

The aim of this experiment

Conclusion

To characterize 5 different types of diesel soot (DS) samples, collected from high pressure (HP) EGRc.

Two of these samples, named DS6 and DS9, were collected from a diesel engine bench.

The two engine bench soot samples were collected from the same engine bench: Renault M9R 2.0L , but with different EGRc by using several operation conditions.

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