Postgraduate Seminar Presentation : Lubricity effect of diesel-alcohol blend

Speaker Quek Sze Wei (Supervisor: A/P Hong Liang)

Host Department of Chemical and Biomolecular Engineering

Date/Time 12 Oct - 12 Oct, 4.00pm

Venue E5-02-32 , Faculty of Engineering, National University of Singapore


In Singapore context, there were only regulations to regulate sulphur content in diesel oil (our system), From this year onwards starting from 1st Jan 2017, maximum allowable sulphur specification is 10ppm (from previously 50 ppm) but NEA will now be introducing whole new regulations in 2017 to regulate other composition in the fuel to further tackle air pollution problem.

Reducing sulphur has been majority done in the industry by hydro-processing which highly eliminate polar and aromaticity of the fuel, that in turns bring down lubricity effect where the fuel can bring about. This arises the first problem to be solved as low lubricity will cause higher rate of wearing and scarring which results in shortening engine parts’ life and thus higher maintenance cost.

Secondly to abide to new NEA regulation to further reduce pollutants in vehicular tailpipe emissions, diesel-alcohol blend has long been intensively research and established to show greater combustion extend and thus reduction of diesel engine emissions as a results, without any adverse impacts or modification needed on the diesel engine.

This thesis propose to use in-situ synthesis of polymeric micelles which exhibits polar tail to encapsulate alcohol and stabilize it in diesel system, and inclusion of functional group to enhance the lubricity effect by the diesel alcohol blend, on top of its original effect in upholding alcohol content in diesel fuel.