Effect of Gasoline Fuel Additives on Combustion and Engine Performance

1.3
 
Thesis Layout 
Chapter 1 has offered an overview of the current project. In order to provide a 
more in depth view of the current understanding of fuel atomisation and combustion 
and the interactions with fuel additives, Chapter 2 presents the background on the 
wider research on the topic. This includes a detailed description of the fuel additives 
studied in present work and research methods used in literature for fuel atomisation 
and combustion characteristics studies. Chapter 3 presents the hardware employed in 
the work and explains reasoning behind the selection. In Chapter 4, the experimental 
methods are explained for spray and combustion investigations. Throughout the 
chapter base fuel is investigated under various conditions in order to develop methods 
to effectively understand how additives affect the spray formation and combustion 
characteristics of the base fuel. Chapters 5and 6 then describe the study into study the 
effects of additives on fuel atomisation and combustion, respectively. Finally, in 
Chapter 7 conclusions are drawn from the previous work and a summary of results is 
offered. This chapter also provides some recommendations for future studies in the 
same field. High speed shadowgraph imaging was employed in this work for providing 

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1.3 Thesis Layout 
25 
qualitative information, an example of which is displayed in Appendix A. 
Dimensional analysis explaining spray characteristics is presented in Appendix B. 

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2.1 Fuel Additive Review 
26 
 
 
 
 
Chapter 2 
2
 
Literature Survey 
Chapter 2 seeks to present background theories and research relating to the 
current project. First, the function of fuel additives and the research in the field is 
offered. Then fuel spray formation features relevant to IC engines are explained and 
the chapter concludes with combustion characteristics.