Nowadays, biomass fuels become a subject which is extensively concerned from the view points of the aggravation of the greenhouse effect, acid rain, other environmental problems and the depletion of oil resources. From the point of this view, this experiment has been carried out to examine the influence of combustion characteristics and exhaust emissions for small diesel engine by using six types of fuel, which consist of different pure ethanol volume percentages ( 5%, 10%, 15%, 20%, and 25% ),

more »

... with constant 3 vol% of surfactant at 20% and 25%; and 10% aqueous ethanol ( ethanol: 60 wt%, water: 40% ), with 3% of surfactant, and labelled as E5, E10, E15, E20, E25, and E10(60), respectively. The combustion behaviors, such as burning pressures, heat release rate and emissions (CO, HC, NOX, Smoke) are observed. The main conclusions are as follows: 1) HC and CO emissions of ethanol-light oil blended fuels are bigger than that of light oil. 2) It is possible to reduce the NOX and smoke emissions by using ethanol-light oil blended fuels. 3) NOX emissions can possible to reduce by using ethanol emulsified light oil under high load engine conditions.