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An Experimental Analysis of Performance and Emission of a Light-duty Vehicle in Fuel Change from Gasoline to Gasoline and Bioethanol Blend

Balazadeh, Navid | 2019

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 51675 (08)
  4. University: Sharif University of Technology
  5. Department: Mechanical Engineering
  6. Advisor(s): Hosseini, Vahid
  7. Abstract:
  8. Increasing greenhouse gases in the atmosphere has many unpleasant consequences. Transportation sector has 23 percent allocation in emitting those gases. Alternative fuels can be considered as a solution in order to decreasing greenhouse gases and less dependency on the fossil fuels. It is noteworthy that between biofuels, bioethanol has the maximum share (based on International Energy Agency, IEA, bioethanol will hold 27 percent share in supplying energy in transportation sector). In this thesis, assessment of exhaust emissions and fuel consumption of a light- duty vehicle with the gasoline and E85 fuels is performed. Note that, engine calibration was not altered. The implemented method is Portable Emission Measurement System (PEMS) which is carried out in various urban and motorway routes with two portable emission measurement devices. In the PEMS method, the exhaust emissions of the vehicle is measured instantaneously in the real driving conditions by the portable emission measurement device. The results prove that using bioethanol, which is E85 (85 vol percent ethanol and 15 vol percent gasoline), as an alternative fuel decreased the emission factor of carbon dioxide (CO2) and carbon monoxide (CO), 9 and 70 percent compared to gasoline. On the contrary, total hydrocarbons (THC) and nitrogen oxides (NOx) increased by around 78 and 580 percent. Also, volumetric fuel consumption increased by 34.5 percent
  9. Keywords:
  10. Portable Emission Measurement System (PEMS) ; Engine Dynamometer Test ; Emission Factor ; Bioethanol ; Driving Cycle ; Chassis Dynamometer Method

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