PROJECT DETAILS:Tribology of fuel contaminated engine oils 

Aims and Objectives:

Engine oil contamination with fuel, fuel dilution, can cause a reduction in viscosity which could potentially lead to the crankshaft bearing failure in car engines. It can also reduce the effectiveness of lubricant additives in forming low friction and durable tribofilms in piston ring/liner and cam/follower engine systems. Depending on the type of fuel, the oxidation rate of lubricant can be accelerated leading to the formation of sludge. It is of high importance for automotive and lubricant industry to understand the mechanisms by which fuel dilution can affect the tribology systems in the engine so they can design engine components and lubricants appropriately.  The aim of this project is to develop a methodology capable of simulating fuel dilution by in-situ measurement of physical and chemical properties of the oil.


The objectives are:

  • Review the potential impact that fuel dilution can have in engine oil.

  • Assess the effect of fuel dilution on lubricant’s physical and chemical properties.

  • Review the methods for fuel measurement in oil, ex situ and in situ.

  • Develop a method for continuously measuring fuel content in oil during the tribological test by analysing the physical and chemical properties of the oil.


Supervisors: Prof Ardian Morina, Dr Shahriar Kosarieh, Prof Anne Neville.


Collaborating groups (academic or industry): Changan, Croda.

Project Updates: