Investigating the Effects of Alternative Fuels with Different Aromatic Species on Compression Ignition Engine Emissions and Performance

摘要: Harmful emissions are the major challenge for combustion systems and continuously increasing with the use of fossil-based feedstock around the globe. Compression ignition engine (CI) is one of the main emitters of harmful pollutants. As compared to spark ignition (SI) engine, CI engine produces high particulate matter (PM) and nitrogen oxides (NOx) emissions. The need for the improvement of engine performance; fuel consumption and thermal efficiency is another challenge. Investigating the effect of fuel components is one of the approaches that can be used to reduce exhaust emissions and improve performance. knowledge gaps need to be completed in how different aromatic species of the same type impact the engine performance and emissions. The contributions of the present study are in the detailed investigations reporting and analyzing the role of different alkylbenzenes and polycyclic aromatics in surrogate fuels on emissions and engine performance. This knowledge would help the future fuel industry to produce future fuels with appropriate alkylbenzenes and polycyclic aromatics for lower emissions and improved performance. In addition, the study provides more details about the influence of different aromatic concentrations in the fuel on emissions and performance. To attain the aims of the current study, different alkylbenzenes and polycyclic aromatics were blended with surrogate fuel at three different contents. The blended fuels were tested experimentally using a direct injection (DI) CI engine at two different load conditions. Appropriate sampling line, particulate and gaseous species measurement instrumentation were …