AC | air conditioning |
ACCESS | Advanced Combustion Control Enabling Systems and Solutions |
AFV | alternative-fuel vehicle |
AKI | anti-knock index |
AT | automatic transmission |
BAT | binary actuation technology |
BEV | battery electric vehicle |
BMEP | brake mean effective pressure |
BOM | bill of materials |
BSFC | brake specific fuel consumption |
BTE | brake thermal efficiency |
CAFE | corporate average fuel economy |
CAI | controlled auto-ignition |
CARB | California Air Resources Board |
CDPF | catalyzed diesel particulate filter |
CEC | California Energy Commission |
CETC | California Electric Transportation Coalition |
CI | compression ignition |
CNG | compressed natural gas |
CO2 | carbon dioxide |
CR | compression ratio |
CVP | continuously variable planetary transmission |
CVT | continuously variable transmission |
CVVL | continuously variable valve lift |
DCP | dual cam phasing |
DCT | dual clutch transmission |
DI | direct injection |
DISI | direct injection spark ignition |
DMC | direct manufacturing cost |
DOC | diesel oxidation catalyst |
DOE | U.S. Department of Energy |
DOHC | dual overhead cam |
DOT | U.S. Department of Transportation |
DPF | diesel particulate filter |
DVVL | discrete variable valve lift |
E85 | 85 percent ethanol |
EACC | electric accessories |
ECU | engine control unit |
eCVT | electronically controlled continuously variable transmission |
EEA | Energy and Environmental Analysis Inc |
EGR | exhaust gas recirculation |
EISA | Energy Independence and Security Act of 2007 |
EPA | U.S. Environmental Protection Agency |
EPS | electric power steering |
EU | European |
EVO | exhaust valve opening |
FAME | fatty acid methyl ester |
FC | fuel consumption |
FCEV | fuel cell electric vehicle |
FE | fuel economy |
FSS | full system simulation |
FTP | Federal Test Procedure |
GDCI | gasoline direct injection compression ignition |
GDI | gasoline direct injection |
GDICI | gasoline direct injection compression ignition |
GHG | greenhouse gas |
GM | General Motors Company |
HC | hydrocarbon |
HCCI | homogeneous-charge compression ignition |
HEV | hybrid-electric vehicle |
HFET/HWFET/HWY | Highway Fuel Economy Test/Highway Federal Emissions Test (or highway cycle) |
I4 | inline 4-cylinder engine |
ICM | indirect cost multiplier |
ICP | intake-cam phasing |
IMEP | indicated mean effective pressure |
ISFC | indicated specific fuel consumption |
ITE | indicated thermal efficiency |
IVC | intake-valve closing |
LBL | low viscosity lubricants |
LCFS | low-carbon fuel standard |
LDV | light duty vehicle |
LNT | lean NOx traps |
LP | low pressure |
LPG | liquefied petroleum gas |
LTC | low temperature combustion |
MBT | minimum spark advance for best torque |
MPFI | multi point fuel injection |
MPG | miles per gallon |
MPV | midsize passenger vehicle |
MY | model year |
NA | naturally aspirated |
NA | North American |
NESCCAF | Northeast States Center for a Clean Air Future |
NHTSA | National Highway Traffic Safety Administration |
NMHC | Non-methane hydrocarbons |
NOx | Nitrogen oxides |
NRC | National Research Council |
NSC | NOx storage and reduction catalysts |
NVH | noise, vibration, and harshness |
NVO | negative value overlap |
OBD | on-board diagnostics |
OEM | original equipment manufacturer |
OHV | overhead valve |
ORNL | Oak Ridge National Laboratory |
OSC | oxygen storage capacity |
PCCI | premixed charge compression ignition |
PEV | plug-in electric vehicle |
PFI | port fuel injection |
PGM | platinum group metals |
PHEV | plug-in hybrid electric vehicle |
PM | particulate matter |
PVO | positive value overlap |
R&D | research and development |
RFG | reformulated gasoline |
RIA | regulatory impact analysis |
ROM | read only memory |
RON | research octane number |
RPE | retail price equivalent |
SACI | spark assisted compression ignition |
SAE | Society of Automotive Engineers |
SC | supercharger |
SCR | selective catalytic reduction |
SGDI | stoichiometric gasoline direct injection |
SI | spark ignited engine |
SOC | state of charge |
SOHC | single overhead cam |
SULEV | super ultra-low emission vehicle |
SUV | sport utility vehicle |
TC | turbocharged |
TSD | technical support document |
TWC | three way catalyst |
UDDS | urban dynamometer driving schedule |
ULEV | ultra low emissions vehicle |
V2G | vehicle-to-grid |
V2V | vehicle-to-vehicle |
V6 | six-cylinder V engine |
V8 | eight-cylinder V engine |
VEL | valve event and lift |
VEM | valve-event modulation |
VGT | variable geometry turbochargers |
VVL | variable valve lift |
VVT | variable valve timing |
xEV | vehicle with an electrified powertrain, included HEV, PHEV, EV and FCEV |
ZEV | zero emission vehicle |