The GREET model, developed by Argonne National Laboratory, is used for this project to establish localized vehicle fuel-cycle analysis model in Taiwan. For this purpose, the model’s structure, the model’s characteristics and the differences of pathways and parameters between Taiwan and the US were studied. The GREET model was then modified based on Taiwan’s pathways. The parameters for Taiwan’s various types of vehicles and various types of fuels, such as gasoline, diesel, electricity, natural gas and renewable natural gas, were analyzed and inputted into the localized model in order to estimate Taiwan’s fuel-cycle results. The estimates of energy use and GHG emissions of Taiwan’s electric car were 57% and 53%, respectively, of those of gasoline cars, and the regulated emissions of Taiwan’s electric car were significantly lower than those of gasoline cars except SOx. The estimates of energy use and emissions of Taiwan’s gasoline cars and electric cars were lower than the estimates of US cars except the GHG emissions of gasoline cars. This project also focused on the feasibility study of real-world gaseous and particulate emissions measurement systems for Taiwan’s vehicles. After comparison with the estimates of the laboratory-level equipment and on-road tests, the chosen systems were approved to be feasible in this study. In the meantime, the collected real-world data were used to establish analysis process and case studies. In the future, the methodology can be strengthened in order to estimate real-world emission factors for the localized vehicle fuel-cycle model.

Vehicle Fuel-Cycle Analysis;Well to Wheel;Real-World Vehicle Emissions