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


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