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Battery Wear from Disparate Duty-Cycles: Opportunities for Electric-Drive Vehicle Battery Health Management; Preprint

Description: Electric-drive vehicles utilizing lithium-ion batteries experience wholly different degradation patterns than do conventional vehicles, depending on geographic ambient conditions and consumer driving and charging patterns. A semi-empirical life-predictive model for the lithium-ion graphite/nickel-cobalt-aluminum chemistry is presented that accounts for physically justified calendar and cycling fade mechanisms. An analysis of battery life for plug-in hybrid electric vehicles considers 782 duty-c… more
Date: October 1, 2012
Creator: Smith, K.; Earleywine, M.; Wood, E. & Pesaran, A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Application of Sleeper Cab Thermal Management Technologies to Reduce Idle Climate Control Loads in Long-Haul Trucks

Description: Each intercity long-haul truck in the U.S. idles approximately 1,800 hrs per year, primarily for sleeper cab hotel loads. Including workday idling, over 2 billion gallons of fuel are used annually for truck idling. NREL's CoolCab project works closely with industry to design efficient thermal management systems for long-haul trucks that keep the cab comfortable with minimized engine idling and fuel use. The impact of thermal load reduction technologies on idle reduction systems were characteriz… more
Date: October 1, 2012
Creator: Lustbader, Jason A.; Venson, Travis; Adelman, Steven; Dehart, Chip; Yeakel, Skip & Castillo, Manuel Sanchez
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Fleet DNA Project (Fact Sheet)

Description: The Fleet DNA Project - designed by the U.S. Department of Energy's National Renewable Energy Laboratory (NREL) in partnership with Oak Ridge National Laboratory - aims to accelerate the evolution of advanced vehicle development and support the strategic deployment of market-ready technologies that reduce costs, fuel consumption, and emissions. At the heart of the Fleet DNA Project is a clearinghouse of medium- and heavy-duty commercial fleet transportation data for optimizing the design of adv… more
Date: October 1, 2012
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

2011 Renewable Energy Data Book (Book)

Description: This Renewable Energy Data Book for 2011 provides facts and figures on energy in general, renewable electricity in the United States, global renewable energy development, wind power, solar energy, geothermal power, biopower, hydropower, advanced water power, hydrogen, renewable fuels, and clean energy investments.
Date: October 1, 2012
Creator: Gelman, R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Effect of B20 and Low Aromatic Diesel on Transit Bus NOx Emissions Over Driving Cycles with a Range of Kinetic Intensity

Description: Oxides of nitrogen (NOx) emissions for transit buses for up to five different fuels and three standard transit duty cycles were compared to establish whether there is a real-world biodiesel NOx increase for transit bus duty cycles and engine calibrations. Six buses representing the majority of the current national transit fleet and including hybrid and selective catalyst reduction systems were tested on a heavy-duty chassis dynamometer with certification diesel, certification B20 blend, low aro… more
Date: October 1, 2012
Creator: Lammert, M. P.; McCormick, R. L.; Sindler, P. & Williams, A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Vehicle Battery Safety Roadmap Guidance

Description: The safety of electrified vehicles with high capacity energy storage devices creates challenges that must be met to assure commercial acceptance of EVs and HEVs. High performance vehicular traction energy storage systems must be intrinsically tolerant of abusive conditions: overcharge, short circuit, crush, fire exposure, overdischarge, and mechanical shock and vibration. Fail-safe responses to these conditions must be designed into the system, at the materials and the system level, through sel… more
Date: October 1, 2012
Creator: Doughty, D. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Measured Laboratory and In-Use Fuel Economy Observed over Targeted Drive Cycles for Comparable Hybrid and Conventional Package Delivery Vehicles

Description: In-use and laboratory-derived fuel economies were analyzed for a medium-duty hybrid electric drivetrain with 'engine off at idle' capability and a conventional drivetrain in a typical commercial package delivery application. Vehicles studied included eleven 2010 Freightliner P100H hybrids in service at a United Parcel Service facility in Minneapolis during the first half of 2010. The hybrids were evaluated for 18 months against eleven 2010 Freightliner P100D diesels at the same facility. Both v… more
Date: October 1, 2012
Creator: Lammert, M. P.; Walkowicz, K.; Duran, A. & Sindler, P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Federal Civil Aviation Programs: An Overview

Description: This report focuses on Federal Aviation Administration (FAA) and Department of Transportation (DOT) civil aviation programs addressed in the FAA Modernization and Reform Act of 2012 (P.L. 112-95), enacted on February 14, 2012, which authorizes AATF taxes and revenue collections and civil aviation program expenditures through FY2015. Programs for these agencies are funded primarily through a special trust fund, the airport and airways trust fund (AATF), and, in part, through general fund contri… more
Date: October 17, 2012
Creator: Elias, Bart
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Maritime Territorial and Exclusive Economic Zone (EEZ) Disputes Involving China: Issues for Congress

Description: This report presents policy and oversight issues for Congress arising from (1) maritime territorial disputes involving China in the South China Sea (SCS) and East China Sea (ECS) and (2) an additional dispute over whether China has a right under international law to regulate U.S. and other foreign military activities in its 200-nautical-mile maritime Exclusive Economic Zone (EEZ).
Date: October 22, 2012
Creator: O'Rourke, Ronald
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Navy Ohio Replacement (SSBN[X]) Ballistic Missile Submarine Program: Background and Issues for Congress

Description: This report discusses the Navy's plan to develop and design a class of 12 next-generation ballistic missile submarines, or SSBN(X)s, as replacements for the 14 Ohio class SSBNs currently in operation. The report explores certain related issues for Congress, including the affordability of the project and its potential impact on other Navy shipbuilding programs, alternatives to the program, and which shipyard or shipyards will build the proposed ships.
Date: October 18, 2012
Creator: O'Rourke, Ronald
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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