ICEs Combustion and Fuels
A Study of Knock Rating and In-Cylinder Mixture of IC Engines Future Fuels
Future fuels will be produced from a wide range of sources, both fossil and renewable alternatives, and will be required to satisfy sustainability criteria and also exhibit combustion characteristics compatible with existing IC engines. In the case of spark ignition engines, there is, therefore, a need to develop a detailed scientific understanding of the effects of fuel and additive on the occurrence of knock, which can limit engine thermal efficiency and potentially increase emissions of regulated pollutants such as nitrogen oxides (NOx) and soot. In-cylinder sampling of gases from within the combustion chamber, with speciation of compounds present at different stages of fuel injection and combustion, can provide insight for example as to how the breakdown of fuels of varying composition can lead to knock, or how additives may interact with fuel reactions to suppress knock. My research interests are focused on the experimental measurements of octane ratings of potential IC engine future fuels to investigate the effects of those fuels and additives on the occurrence of knock and engine performance parameters.