Abdulrehman Ajina



PhD: Fundamental studies of the nitrogen detergents effects on gum formation from gasoline fuel

Materials deposition on engine internal parts (e.g. Combustion Chamber (CC), Intake Valves (IV), and Port Fuel Injectors (PFI)) has the potential to severely harm the combustion cycle leading to further complications. Accumulation of deposits can drastically increase engine temperature causing uncontrolled ignition, knocking, and higher CO exhaust emissions.
In this project, fundamentals of colloidal science will be applied to investigate the surface interaction between nitrogen-based additives and steel surfaces in gasoline fuel engines as well as to characterise the interactions between gum formed from fuels and the nitrogen as a function of temperature, concentration, and presence of other components.

Outreach, training and other activities:

  • LiXEdrom liquid jet XAS/XES experimental station at Helmholtz-Zentrum Berlin (BESSY II) Synchrotron in Berlin, Germany

Publications and presentations:

  • Poster presentation at ChemEngDay 2016, Bath, UK

Masters research project in year 1 of CDT:

  • ‘Spreading dynamics of soft particles attached to solid substrates’ with Dr David Harbottle, Chemical & Process Engineering
  • ‘Nitrogen Based Additives: Study of Octadecylamine Influence on n-Heptane Using Attenuated Total Reflection Fourier Transform Infrared (ATR FT-IR) Spectroscopy’ with Professor Sven Schroeder, Chemical & Process Engineering