Sooting Tendencies of Renewable Biofuels for Gasoline Direct-Injection Engines [article]

Avery Vella, Charles McEnally, Dhrubajyoti Das, Lisa Pfefferle
2017 Figshare  
Paper presented at the 10th U.S. National Combustion Meeting, April 23-26 2017, College Park MD Gasoline direct injection (GDI) engines are a type of advanced automotive powerplant where the fuel is injected directly into the cylinder and then ignited with a spark plug. They typically produce higher efficiency than conventional spark ignition engines but also higher emissions, especially of particulates. One way of reducing these emissions, and of reducing net carbon dioxide emissions, is to
more » ... emissions, is to use renewable biofuels as the fuel. In this study we have measured quantitative sooting tendencies of several promising biofuel candidates, both as pure compounds and in mixtures with a conventional gasoline. These compounds include alcohols, anisoles, furans, and cymenes. The test compounds were doped into the fuel of a methane/air nonpremixed flame and then relative values of the maximum soot concentration were determined from line-of- sight spectral radiance from the flame. The laboratory-scale measurements have been compared to engine measurements for the same fuels (Ratcliff et al., SAE Int J Fuels Lubr doi :10.4271/2016- 01-0705) to determine how directly fuel chemistry affects emissions, and which other factors such as volatility are important.
doi:10.6084/m9.figshare.4980755.v1 fatcat:36mt3mulhng25dogsestgq2rra