Study on the definition and verification of the new driver fuel efficiency index for the objectification of fuel efficiency on real-road

Abstract

As a response to global warming issues in the transport sector, fuel efficiency measures have been improved, and emissions have been restricted. Although the certified fuel efficiency standard is improving, actual fuel efficiency on real road situations is lower than the certified level, and many drivers are dissatisfied because of this gap. The gap between the two fuel efficiency standards is caused by a number of factors, such as the driver's driving pattern, gradient, weather, and so on. To study the exact gap, an objective index is required to quantify and exclude these factors from actual fuel efficiency, thus, a preceding research related to this study defined the Driver Fuel Efficiency Index. This study verified the Driver Fuel Efficiency Index in the preceding research based on real-road driving data, but it was found that the Driver Fuel Efficiency Index had a lower R2 value than the real fuel consumption rate. Therefore, this study defined the New Driver Fuel Efficiency Index based on driving power, and verified this index based on five-cycle and real-road driving data. Copyright © 2020 KSAE.