Reduction of exhaust emissions by using a water-in-diesel emulsion as diesel fuel, by Anna Lif Surfactants Petroleum applications Surfactants Europe

The effects on exhaust emissions when using water-in-diesel emulsion and microemulsion as diesel fuel have been investigated. The investigations were performed in a direct injection diesel engine by using the 13-mode driving cycle ECE R49. Reductions in soot emission by up to 90 % were achieved. This is 10-fold reduction in emission levels compared to the requirements in exhaust emissions legislation for new vehicles in 2008 in the European Union. Also the use of EGR, exhaust gas recirculation, was investigated. When using EGR the emissions of nitrogen oxides are significantly reduced.

Anna Lif, Magnus Skoglundh, Savo Gjirja and Ingemar Denbratt: “Reduction of Soot Emissions from a Direct Injection Diesel Engine using Water-in-Diesel Emulsion and Microemulsion Fuels”, SAE Technical Paper 2007-01-1076.