Publications
Showing 57 results for Author: Stacy C. Davis
Apr, 2024
Journal
Consumer-Oriented Energy Use and Range Metrics for Battery Electric Vehicles
The present study was motivated by a need to expand information for consumers offered through the FuelEconomy.Gov website. To that end, a power-based modeling approach has been used to examine the effect of steady-speed driving on estimated range for model year 2020 – 2023 battery electric vehicles (BEVs). This approach allowed rapid study of a broader range of BEV models…
Dec, 2023
Journal
Auto Stop-Start Fuel Consumption Benefits
With increasingly stringent regulations mandating the improvement of vehicle fuel economy, automotive manufacturers face growing pressure to develop and implement technologies that improve overall system efficiency. One such technology is an automatic (auto) stop-start feature. Auto stop-start reduces idle time and reduces fuel use by temporarily shutting the engine off wh…
Nov, 2023
Journal
Lessons to be Learned: More than One Million Plug-in EVs Sold in the U.S.
December 2010 marked the first sales of the Nissan LEAF and Chevrolet Volt — widely considered the first mass-marketed plug-in electric vehicles (EVs). Since that time, additional models have entered the market. To date, more than one million plug-in EVs have been sold in the United States.
Nov, 2023
Conference Paper
Quantitative Evaluation of MD/HD Vehicle Electrification Using Statistical Data
This paper aims to present a wide-ranging analysis of Class 3-8 commercial vehicle electrification by means of developing a framework tool which uses a quantitative method of electric vehicle energy consumption and appropriate charging considerations, as well as using the Fleet DNA statistical drive behavior data, in evaluating and accelerating feasible or market-ready MD/…
Nov, 2023
ORNL Report
Transportation Energy Data Book: Edition 36
The Transportation Energy Data Book: Edition 36 is a statistical compendium prepared and published by Oak Ridge National Laboratory (ORNL) under contract with the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, Vehicle Technologies Office. Designed for use as a desk-top reference, the Data Book represents an assembly and display of statistics a…
Nov, 2023
ORNL Report
Historical Review of the Transportation Analysis Fact of the Week, 1996-2017
The Vehicle Technologies Office in the United States Department of Energy hosts a transportation analysis fact of the week on its webpage. As of October 2017, one thousand facts have been published since 1996. Examining the themes of published facts allows one to trace analytical trends determined to be of interest to the public over this time. The most popular themes addr…
Nov, 2023
ORNL Report
Transportation Energy Data Book: Edition 38
The Transportation Energy Data Book: Edition 38 is a statistical compendium prepared and published by Oak Ridge National Laboratory (ORNL) under contract with the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, Vehicle Technologies Office. Designed for use as a desk-top reference, the Data Book represents an assembly and display of statistics a…
Nov, 2023
ORNL Report
Transportation Energy Use: Comparison Including and Excluding Upstream Energy Use
Nov, 2023
ORNL Report
Transportation Energy Data Book: Edition 39
The Transportation Energy Data Book: Edition 39 is a statistical compendium prepared and published by Oak Ridge National Laboratory (ORNL) under contract with the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, Vehicle Technologies Office. Designed for use as a desk-top reference, the Data Book represents an assembly and display of statistics a…
Nov, 2023
Journal
Improving the effectiveness and equity of fuel economy regulations with sales adjustment factors
Larger vehicles, such as sports utility vehicles, consume more energy than cars. Their increasing popularity runs contrary to the goal of fuel economy regulations to reduce fossil fuel consumption and greenhouse gas emissions and can be explained by consumer preference and lower regulation stringency, which is due to footprint, truck classification, and the omission of het…
Nov, 2023
Journal
Assessment of the Effectiveness of Three Aftermarket Gasoline Fuel Stabilizers in Preventing Gum Formation and Loss of Oxidation Stability
Fuel stabilizers have long been marketed to consumers to prevent oxidation and gum formation. In the past, gasoline storage for long periods of time was commonly limited to off-road equipment that was used infrequently. Cars and trucks that were driven regularly consumed the fuel in their tanks rapidly enough to avoid excessive fuel aging. However, plug-in hybrid electric…