Title:
Application of Expert Systems to Determine Optimal Biofuel Type - Engine Tuning Configuration
Author(s):
Balafoutis, A., Papageorgiou, E., Vikopoulou, Z., Fountas, S., Natsis, A., Papadakis, G.
Document(s):
Paper
Abstract:
Three sunflower oil/diesel blends and pure sunflower oil were tested in a CI engine using the manufacturer’s settings, two altered injection timings (IT±2oCA) and injector protrusions (IP±0.5mm). 36 FuelITIP configurations were completed, plus the reference run with diesel. A life cycle analysis (LCA) was conducted and fossil CO2 was counted. The configurations were compared using analytical hierarchy process (AHP) that was applied for three cases: 1. focusing on engine performance, 2. environmentally driven and 3. intermediate situation between the first two. Each case was overviewed using two perspectives: either with CO2 values measured in the tests or the CO2 calculated by the LCA; it was shown that all cases, in both perspectives, gave similar results in the FuelITIP configurations ranking with minor differences. However, the results were significantly different when comparing the two perspectives. The LCA CO2 values favoured high oil content fuels ranking them in the first positions. Diesel was graded very low. Advanced IT was positive translated in covering most of first positions. IP did not give a clear influence trend on final ranking, as IT was dominant in engine performance and emissions. Oily fuels had disadvantages (i.e. high BSFC, high NOx values), but they were overcome by the advantages (i.e. increased torque, lower CO2) to receive higher ranking position.
Keywords:
emissions, life cycle assessment (LCA), performance, sunflower oil, AHP
Topic:
Technology Deployment and Industrial Demonstration
Subtopic:
Biofuels for transport
Event:
19th European Biomass Conference and Exhibition
Session:
VP4.3.10
Pages:
2301 - 2312
ISBN-13:
978-88-89407-55-4
ISBN-10:
88-89407-55-7
Paper DOI:
10.5071/19thEUBCE2011-VP4.3.10
Price:
FREE
