21CTP | 21st Century Truck Partnership |
ABS | antilock braking system |
A/C | air conditioning |
ACES | Advanced Collaborative Emission Study |
AEC MOU | Advanced Engine Combustion Memorandum of Understanding |
AH | ampere-hour |
AHHPS | advanced heavy hybrid propulsion system |
ALVW | adjusted loaded vehicle weight |
ANL | Argonne National Laboratory |
APBF | advanced petroleum based fuels |
API | American Petroleum Institute |
APU | auxiliary power unit |
ARC | Automotive Research Center |
ARRA | American Recovery and Reinvestment Act |
ASTM | American Society for Testing and Materials |
AT | aftertreatment |
ATA | American Trucking Association |
ATRI | American Transportation Research Institute |
AVTA | Advanced Vehicle Testing Activity |
BAC | blood alcohol content |
bbl/day | barrels per day |
bhp-h | brake horsepower-hour |
BMEP | brake mean effective pressure |
BSHR | brake specific heat rejection |
BTE | brake thermal efficiency |
BTL | biomass-to-liquids |
BTU | British thermal unit |
CAC | compressor after cooler |
CARB | California Air Resources Board |
CAT | Caterpillar |
CDL | commercial driver’s license |
CERDEC | Communications-Electronics Research, Development and Engineering Center |
CFD | computational fluid dynamics |
CH4 | methane |
CLEERS | Crosscut Lean Exhaust Emission Reduction Simulations |
CLOSE | Collaborative Lubricating Oil Study on Emissions |
CMV | commercial motor vehicle |
CO | carbon monoxide |
CO2 | carbon dioxide |
CO2-eq | CO2-equivalent |
CRADA | Cooperative Research and Development Agreement |
CRC | Coordinating Research Council |
CRS | Caterpillar Regeneration System |
CTEI | Commercial Traffic Effects Institute |
DCT | Diesel Crosscut Team |
DDC | Detroit Diesel Corporation |
DEC | Diesel Emission Control |
DEER | Directions in Engine-Efficiency and Emissions Research (formerly Diesel Engine-Efficiency and Emissions Research) |
DEF | Diesel Exhaust Fluid |
DERA | Diesel Emission Reduction Act |
DME | dimethyl ether |
DOC | diesel oxidation catalyst |
DOD | U.S. Department of Defense |
DOE | U.S. Department of Energy |
DOT | U.S. Department of Transportation |
DPF | diesel particulate filter |
DPIM | Dual Power Inverter Model |
ECU | environmental control unit |
EERE | Energy Efficiency and Renewable Energy (Office of) |
EGR | exhaust gas recirculation |
EIA | Energy Information Administration |
EISA | Energy Independence and Security Act |
EMA | Engine Manufacturers Association |
EMD | engine manufacturer diagnostic |
EPA | U.S. Environmental Protection Agency |
EPAct 2005 | Energy Policy Act of 2005 |
EPS | Electrified Parking Spaces |
ESC | electronic stability control |
EU | European Union |
FACE | Fuels for Advanced Combustion Engines |
FAME | fatty acid methyl esters |
FCFP | FreedomCAR and Fuel Partnership |
FCVT | FreedomCAR and Vehicle Technologies (Office of) |
FHWA | Federal Highway Administration |
FMCSA | Federal Motor Carrier Safety Administration |
FMVSS | Federal Motor Vehicle Safety Standards |
FOA | Funding Opportunity Announcement |
FOH | fuel-operated heater |
FOT | field operational test |
F-T | Fischer-Tropsch |
FTP | Federal Test Procedure |
FY | fiscal year |
GAC | granular activated carbon |
gal | gallon |
g/bhp-h | grams per brake horsepower-hour |
GCW | gross combined weight |
GES | General Estimates System |
GFIC | ground-fault interrupter circuit |
GHG | greenhouse gas |
g/mi | grams per mile |
gpm | gallons per mile |
GPS | global positioning system |
GREET | Greenhouse Gas Regulated Emissions, and Transportation |
GTL | gas-to-liquid |
GVW | gross vehicle weight |
GVWR | Gross Vehicle Weight Rating |
HC | hydrocarbon |
HCCI | homogeneous-charge compression ignition |
HD | heavy-duty |
HECC | High Efficiency Clean Combustion |
HEI | Health Effects Institute |
HEMTT | Heavy Expanded Mobility Tactical Truck |
HEV | hybrid electric vehicle |
HFC | halogenated fluororcarbon |
HFRR | high frequency reciprocating rig |
HHDDE | heavy heavy-duty diesel engine |
HHDDT | Heavy Heavy-Duty Dieset Truck |
HHV | hybrid heavy-duty electric vehicle |
HLA | hydraulic lift assist |
HMMWV | High Mobility Multipurpose Wheeled Vehicle |
HP | high pressure |
hp | horsepower |
HPV | high productivity vehicle (aka LCV) |
HTHS | high temperature high shear |
HTML | High Temperature Materials Laboratory |
HVAC | heating, ventilation, and air conditioning |
HVD | high-volatility diesel |
HWFET | highway fuel economy test |
IC | internal combustion |
ICE | internal combustion engine |
IGBT | insulated gate bipolar transistor |
IRS | Internal Revenue Service |
ISG | integrated starter-generator |
ISTEA | Intermodal Surface Transportation Efficiency Act |
ITS | Intelligent Transportation Systems |
IVBSS | Integrated Vehicle-Based Safety Systems |
JCAP | Japanese Clean Air Program |
JCS | Johnson Controls-SAFT |
JP-8 | Jet Propellant 8 |
KOH | potassium hydroxide |
kWh | kilowatt-hour |
L | liter |
LANL | Los Alamos National Laboratory |
lb | pound |
LCFS | Low Carbon Fuel Standard |
LCV | Long Combination Vehicle (aka HPV) |
LD | light-duty |
LDT | light-duty truck |
LDT1 | light-duty truck 1 |
LDV | light-duty vehicle |
LDW | lane departure warning |
LEV | Low Emission Vehicle |
LHDDE | light heavy-duty diesel engine |
LI | lithion-ion |
LLNL | Lawrence Livermore National Laboratory |
LNT | lean NOx trap |
LP | low pressure |
LSD | low sulfur diesel |
LS/SF | long sleeper tractor and straight frame |
LTC | low-temperature combustion |
LVW | loaded vehicle weight |
µm | micrometer |
MBRC | Miles Between Road Call |
MD/HD | medium-duty/heavy-duty |
MDPV | medium-duty passenger vehicle |
MDV | medium-duty vehicle |
MET | More Electric Truck |
MFC | Model Fund Consortium |
MHDDE | medium heavy-duty diesel engine |
MHDV | medium- and heav-duty vehicle |
mi | mile |
mpg | miles per gallon |
mph | miles per hour |
msec | millisecond |
MYPP | Multi-Year Program Plan |
N2O | nitrous oxide |
NAC | National Automotive Center |
NAC NOx | Absorber Catalysts |
NASA | National Aeronautics and Space Administration |
NCSU | North Caroline State University |
NEC | National Electric Code |
NETL | National Energy Technology Laboratory |
NFAC | National Full-Scale Aerodynamics Complex |
NHWBS | next-generation wide base single (tires) |
NHTSA | National Highway Traffic Safety Administration |
nm | nanometer |
NMHC | nonmethane hydrocarbon |
NOx | oxides of nitrogen |
NPBF | non-petroleum based fuels |
NPRM | Notice of Proposed Rulemaking |
NRC | National Research Council |
NREL | National Renewable Energy Laboratory |
NTE | Not-to-Exceed |
NTP | National Toxicology Program |
NTSB | National Transportation Safety Board |
OBD | on-board diagnostic |
OECD | Organization for Economic Co-operation and Development |
OEM | original equipment manufacturer |
OHVT | Office of Heavy Vehicles Technology |
ORNL | Oak Ridge National Laboratory |
PART | Program Assessment Rating Tool |
PC | passenger car |
PCCI | pre-mixed charge compression ignition |
PEM | polymer electrolyte membrane |
PHEV | plug-in hybrid electric vehicle |
PM | particulate matter |
PM2.5 | particulate matter smaller than 2.5 micrometers in diameter (also PM10) |
PNGV | Partnership for a New Generation of Vehicles |
PNNL | Pacific Northwest National Laboratory |
ppm | parts per million |
PSAT | Powertrain Systems Analysis Toolkit |
psi | pounds per square inch |
PTO | power take-off |
PZEV | Partial Zero Emission Vehicle |
R&D | research and development |
RFS | Renewable Fuels Standards |
rpm | revolutions per minute |
SAE | Society of Automotive Engineers |
SCR | selective catalytic reduction |
SECA | Solid State Energy Conversion Alliance |
SET | Supplemental Emission Test |
SI | spark-ignited |
SNL | Sandia National Laboratories |
SNS | Spellation Neutron Source |
SO2 | sulfur dioxide |
SOFC | solid oxide fuel cell |
STEP | Shorepower Truck Electrification Project |
SULEV | Super Ultra Low Emission Vehicle |
SUV | sport utility vehicle |
21CTP | 21st Century Truck Partnership |
TACOM | U.S. Army Tank-Automotive Command |
TARDEC | Tank-Automotive Research, Development and Engineering Center |
TMA | Truck Manufacturers Association |
TRB | Transportation Research Board |
TSE | truck stop electrification |
UDDS | Urban Dynamic Driving Schedule |
UFP | ultra-fine particulates |
ULEV | Ultra Low Emission Vehicle |
ULSD | ultralow-sulfur diesel |
USABC | U.S. Advanced Battery Consortium |
USCAR | U.S. Council for Automotive Research |
UTQGS | Uniform Tire Quality Grading System |
V2I | vehicle to infrastructure |
V2V | vehicle to vehicle |
VG | variable geometry |
VIUS | Vehicle Inventory and Use Survey |
VMT | vehicle miles traveled |
VSST | Vehicle Systems Simulation and Testing |
VT | viscous transmission |
VVA | variable valve actuation |
WBS | wide base single |
Wh/kg | watt-hours per kilogram |
WHR | waste heat recovery |
ZEV | Zero Emission Vehicle |