Abstract
This paper elaborates a macroscopic, non-iterative algorithm to estimate the fuel consumption of vehicles. The algorithm uses the Willan's internal combustion engine model and needs no instantaneous values of speed and acceleration. The efficiency of the proposed algorithm has been compared with measurement results for the following three cycles: motor vehicle expert group (MVEG-95), European driving cycle (ECE), and extra-urban driving cycle (EUDC). For eco-routing, experiments show that there are tradeoffs between fuel savings and travel time. Results reported in this paper show that up to 33 % of fuel savings have been achieved at the expense of 3 % increase in trip-time. Finally, for manual gearing, the paper reports that proper gear shifting strategies can have substantial fuel savings. The reported experiments show that shifting from the 3rd to the 4th gear can save fuel consumption by 19%. These savings can reach up to 25% when shifting from the 4th to the 5th gear.